[Xenomai] Reading /proc/xenomai/stat causes high latencies

Jeroen Van den Keybus jeroen.vandenkeybus at gmail.com
Wed Apr 23 15:45:08 CEST 2014


I've attached an I-trace from what happens when 'modprobe xeno_native'
stalls. I could use some hints as where to start looking into this
issue. Right now, I would say I have a look at which code paths are
traversed and not when CONFIG_IPIPE_TRACE is unset and set
respectively.


Jeroen.


2014-04-23 11:14 GMT+02:00 Jeroen Van den Keybus
<jeroen.vandenkeybus at gmail.com>:
> Curious. If I enable the I-pipe tracer, the problem goes away. If I
> disable it, it reliably returns. In the last case, however, loading
> xeno_native is either slow (several seconds) or does not terminate
> unitl I hit a key (I used <SHIFT L>) on an attached keyboard.
>
> (dmesg log contains the same rcutree warnings in both cases as
> mentioned under 'Slow ... RT task' post)
>
> Jeroen.
>
>
> 2014-04-22 18:02 GMT+02:00 Jeroen Van den Keybus
> <jeroen.vandenkeybus at gmail.com>:
>> Using a 3.10.18 kernel with Xenomai 2.6.3, reading the stat entry of
>> /proc/xenomai causes high latencies in RT tasks. I've found a report
>> on a similar issue in
>> https://sites.google.com/site/manisbutareed/linuxcnc-2-5/xenomai-user-threads.
>> We also had this occurring on a 3.8.13 kernel.
>>
>> A typical latency test run looks like:
>>
>> RTT|  00:00:01  (periodic user-mode task, 100 us period, priority 99)
>> RTH|----lat min|----lat avg|----lat max|-overrun|---msw|---lat best|--lat worst
>> RTD|     -2.382|     -2.357|     -1.945|       0|     0|     -2.382|     -1.945
>> RTD|     -2.577|     -2.360|     -1.749|       0|     0|     -2.577|     -1.749
>> RTD|     -2.380|     -2.360|     -1.865|       0|     0|     -2.577|     -1.749
>> RTD|     -2.568|     -2.361|     -1.530|       0|     0|     -2.577|     -1.530
>> RTD|     -2.379|     -2.359|     -1.732|       0|     0|     -2.577|     -1.530
>> RTD|     -2.381|     -2.361|     -2.008|       0|     0|     -2.577|     -1.530
>> RTD|     -2.381|     -2.360|     -2.085|       0|     0|     -2.577|     -1.530
>> RTD|     -2.699|     -2.359|      2.566|       0|     0|     -2.699|      2.566
>> RTD|     -2.380|     -2.320|     -1.876|       0|     0|     -2.699|      2.566
>> RTD|     -2.381|     -2.359|      2.528|       0|     0|     -2.699|      2.566
>> RTD|     -2.380|     -2.360|     -1.805|       0|     0|     -2.699|      2.566
>> RTD|     -2.579|     -2.311|     -0.045|       0|     0|     -2.699|      2.566
>> RTD|     -2.380|     -2.359|     -2.072|       0|     0|     -2.699|      2.566
>> RTD|     -2.575|     -2.360|      2.065|       0|     0|     -2.699|      2.566
>> RTD|     -2.381|     19.028|   3043.067|      31|     0|     -2.699|   3043.067
>> RTD|     -2.566|     26.488|    105.823|      32|     0|     -2.699|   3043.067
>> RTD|     -2.443|     -2.276|      0.597|      32|     0|     -2.699|   3043.067
>> RTD|     -2.584|     -2.306|      2.032|      32|     0|     -2.699|   3043.067
>> RTD|     -2.377|     -2.242|      4.106|      32|     0|     -2.699|   3043.067
>> RTD|     -2.537|     -2.291|      4.394|      32|     0|     -2.699|   3043.067
>>
>> It is obvious where I issued the 'cat /proc/xenomai/stat' command.
>>
>> I will try to create an I-trace now. (config is same as under my
>> previous post 'Slow execution of RT task' - I'm still looking into
>> that issue as well).
>>
>>
>> Jeroen.
-------------- next part --------------
I-pipe worst-case tracing service on 3.10.18-ipipe/ipipe release #1
-------------------------------------------------------------
CPU: 0, Begin: 382257313528 cycles, Trace Points: 7 (-2048/+1), Length: 19678412 us
Calibrated minimum trace-point overhead: 0.060 us

 +----- Hard IRQs ('|': locked)
 |+-- Xenomai
 ||+- Linux ('*': domain stalled, '+': current, '#': current+stalled)
 |||			  +---------- Delay flag ('+': > 1 us, '!': > 10 us)
 |||			  |	   +- NMI noise ('N')
 |||			  |	   |
	  Type	  User Val.   Time    Delay  Function (Parent)
 |   +end     0x80000000 -10026	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10026	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10026	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10026	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10026	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10026	  0.095  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10026	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10026	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10026	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10025	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10025	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10025	  0.091  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10025	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10025	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10025	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10025	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10025	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10025	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10024	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10024	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10024	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10024	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10024	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10024	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10024	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10024	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10024	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10024	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10024	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10023	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10023	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10023	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10023	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10023	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10023	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10023	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10023	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10023	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10022	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10022	  0.095  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10022	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10022	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10022	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10022	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10022	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10022	  0.091  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10022	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10022	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10021	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10021	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10021	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10021	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10021	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10021	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10021	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10021	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10021	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10021	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10020	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10020	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10020	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10020	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10020	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10020	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10020	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10020	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10020	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10020	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10019	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10019	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10019	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10019	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10019	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10019	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10019	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10019	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10019	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10019	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10018	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10018	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10018	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10018	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10018	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10018	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10018	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10018	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10018	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10018	  0.092  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10017	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10017	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10017	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10017	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10017	  0.092  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10017	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10017	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10017	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10017	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10017	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10016	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10016	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10016	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10016	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10016	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10016	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10016	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10016	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10016	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10016	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10015	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10015	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10015	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10015	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10015	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10015	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10015	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10015	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10015	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10015	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10015	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10014	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10014	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10014	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10014	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10014	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10014	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10014	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10014	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10014	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10014	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10013	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10013	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10013	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10013	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10013	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10013	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10013	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10013	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10013	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10012	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10012	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10012	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10012	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10012	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10012	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10012	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10012	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10012	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10012	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10012	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10011	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10011	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10011	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10011	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10011	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10011	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10011	  0.092  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10011	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10011	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10010	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10010	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10010	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10010	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10010	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10010	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10010	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10010	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10010	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10010	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10010	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10009	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10009	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10009	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10009	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10009	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10009	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10009	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10009	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10009	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10009	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10008	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10008	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10008	  0.091  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10008	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10008	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10008	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10008	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10008	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10008	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10007	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10007	  0.092  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10007	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10007	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10007	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10007	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10007	  0.092  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10007	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10007	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10007	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10006	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10006	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10006	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10006	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10006	  0.094  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10006	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10006	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10006	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10006	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10006	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10005	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10005	  0.095  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10005	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10005	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10005	  0.111  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10005	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10005	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10005	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10005	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10005	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10004	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10004	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10004	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10004	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10004	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10004	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10004	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10004	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10004	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10004	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10003	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10003	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10003	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10003	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10003	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10003	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10003	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10003	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10003	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10003	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10002	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10002	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10002	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10002	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10002	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10002	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10002	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10002	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10002	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10002	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10001	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10001	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10001	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -10001	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -10001	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -10001	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -10001	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -10001	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -10001	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -10001	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -10000	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -10000	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -10000	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -10000	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -10000	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -10000	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -10000	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -10000	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -10000	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -10000	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9999	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9999	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9999	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9999	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9999	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9999	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9999	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9999	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9999	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9999	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9998	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9998	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9998	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9998	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9998	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9998	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9998	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9998	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9998	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9998	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9997	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9997	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9997	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9997	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9997	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9997	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9997	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9997	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9997	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9997	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9996	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9996	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9996	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9996	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9996	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9996	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9996	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9996	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9996	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9996	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9995	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9995	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9995	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9995	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9995	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9995	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9995	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9995	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9995	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9995	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9994	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9994	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9994	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9994	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9994	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9994	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9994	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9994	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9994	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9994	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9993	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9993	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9993	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9993	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9993	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9993	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9993	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9993	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9993	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9993	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9992	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9992	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9992	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9992	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9992	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9992	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9992	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9992	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9992	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9992	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9991	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9991	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9991	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9991	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9991	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9991	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9991	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9991	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9991	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9991	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9990	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9990	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9990	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9990	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9990	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9990	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9990	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9990	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9990	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9990	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9989	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9989	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9989	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9989	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9989	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9989	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9989	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9989	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9989	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9989	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9988	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9988	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9988	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9988	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9988	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9988	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9988	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9988	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9988	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9988	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9987	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9987	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9987	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9987	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9987	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9987	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9987	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9987	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9987	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9987	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9986	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9986	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9986	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9986	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9986	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9986	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9986	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9986	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9986	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9986	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9985	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9985	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9985	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9985	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9985	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9985	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9985	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9985	  0.092  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9985	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9985	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9984	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9984	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9984	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9984	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9984	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9984	  0.094  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9984	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9984	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9984	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9984	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9983	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9983	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9983	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9983	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9983	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9983	  0.111  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9983	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9983	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9983	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9983	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9982	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9982	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9982	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9982	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9982	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9982	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9982	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9982	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9982	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9982	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9981	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9981	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9981	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9981	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9981	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9981	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9981	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9981	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9981	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9981	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9980	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9980	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9980	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9980	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9980	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9980	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9980	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9980	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9980	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9980	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9979	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9979	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9979	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9979	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9979	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9979	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9979	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9979	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9979	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9979	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9978	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9978	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9978	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9978	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9978	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9978	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9978	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9978	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9978	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9978	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9977	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9977	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9977	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9977	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9977	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9977	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9977	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9977	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9977	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9977	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9976	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9976	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9976	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9976	  0.097  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9976	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9976	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9976	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9976	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9976	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9976	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9975	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9975	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9975	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9975	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9975	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9975	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9975	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9975	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9975	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9975	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9974	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9974	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9974	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9974	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9974	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9974	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9974	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9974	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9974	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9974	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9973	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9973	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9973	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9973	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9973	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9973	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9973	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9973	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9973	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9973	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9972	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9972	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9972	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9972	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9972	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9972	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9972	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9972	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9972	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9972	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9971	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9971	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9971	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9971	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9971	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9971	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9971	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9971	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9971	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9971	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9970	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9970	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9970	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9970	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9970	  0.094  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9970	  0.091  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9970	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9970	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9970	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9970	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9969	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9969	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9969	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9969	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9969	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9969	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9969	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9969	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9969	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9969	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9968	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9968	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9968	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9968	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9968	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9968	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9968	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9968	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9968	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9968	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9967	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9967	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9967	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9967	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9967	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9967	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9967	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9967	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9967	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9967	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9966	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9966	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9966	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9966	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9966	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9966	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9966	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9966	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9966	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9966	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9965	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9965	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9965	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9965	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9965	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9965	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9965	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9965	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9965	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9965	  0.095  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9964	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9964	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9964	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9964	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9964	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9964	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9964	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9964	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9964	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9964	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9963	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9963	  0.098  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9963	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9963	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9963	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9963	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9963	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9963	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9963	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9963	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9962	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9962	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9962	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9962	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9962	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9962	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9962	  0.094  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9962	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9962	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9962	  0.109  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9961	  0.094  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9961	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9961	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9961	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9961	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9961	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9961	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9961	  0.118  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9961	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9961	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9960	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9960	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9960	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9960	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9960	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9960	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9960	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9960	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9960	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9959	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9959	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9959	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9959	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9959	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9959	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9959	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9959	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9959	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9959	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9959	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9958	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9958	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9958	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9958	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9958	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9958	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9958	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9958	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9958	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9958	  0.094  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9957	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9957	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9957	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9957	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9957	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9957	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9957	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9957	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9957	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9956	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9956	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9956	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9956	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9956	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9956	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9956	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9956	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9956	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9956	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9955	  0.090  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9955	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9955	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9955	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9955	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9955	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9955	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9955	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9955	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9955	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9955	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9954	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9954	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9954	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9954	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9954	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9954	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9954	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9954	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9954	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9954	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9953	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9953	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9953	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9953	  0.096  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9953	  0.090  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9953	  0.089  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9953	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9953	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9953	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9952	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9952	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9952	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9952	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9952	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9952	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9952	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9952	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9952	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9952	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9952	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9951	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9951	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9951	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9951	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9951	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9951	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9951	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9951	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9951	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9951	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9950	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9950	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9950	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9950	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9950	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9950	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9950	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9950	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9950	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9949	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9949	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9949	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9949	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9949	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9949	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9949	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9949	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9949	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9949	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9949	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9948	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9948	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9948	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9948	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9948	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9948	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9948	  0.092  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9948	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9948	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9947	  0.095  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9947	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9947	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9947	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9947	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9947	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9947	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9947	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9947	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9947	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9947	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9946	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9946	  0.094  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9946	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9946	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9946	  0.122  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9946	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9946	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9946	  0.092  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9946	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9946	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9945	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9945	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9945	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9945	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9945	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9945	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9945	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9945	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9945	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9944	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9944	  0.092  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9944	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9944	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9944	  0.092  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9944	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9944	  0.092  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9944	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9944	  0.120  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9944	  0.087  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9943	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9943	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9943	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9943	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9943	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9943	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9943	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9943	  0.091  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9943	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9943	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9942	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9942	  0.094  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9942	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9942	  0.090  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9942	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9942	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9942	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9942	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9942	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9942	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9941	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9941	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9941	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9941	  0.095  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9941	  0.092  __alloc_pages_nodemask+0x0 (__vmalloc_node_range+0xf3)
     +func               -9941	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9941	  0.121  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9941	  0.112  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9941	  0.096  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9941	  0.091  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9940	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9940	  0.095  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9940	  0.121  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     #func               -9940	  0.085  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9940	  0.091  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9940	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9940	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9940	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9940	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9940	  0.143  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9939	  0.122  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9939	  0.107  map_vm_area+0x0 (__vmalloc_node_range+0x11e)
     +func               -9939	  0.594  vmap_page_range_noflush+0x0 (map_vm_area+0x2e)
     +func               -9939	  0.096  __ipipe_pin_range_globally+0x0 (vmap_page_range_noflush+0x22a)
     +func               -9939	  5.627  _raw_spin_lock+0x0 (__ipipe_pin_range_globally+0x8e)
     +func               -9933	  0.377  xnheap_init+0x0 [xeno_nucleus] (xnpod_init+0x2ad [xeno_nucleus])
     +func               -9933	  6.681  init_extent+0x0 [xeno_nucleus] (xnheap_init+0x1f1 [xeno_nucleus])
 |   +begin   0x80000000 -9926	  0.370  xnheap_init+0x239 [xeno_nucleus] (xnpod_init+0x2ad [xeno_nucleus])
 |  *+func               -9925	  0.122  __ipipe_restore_head+0x0 (xnheap_init+0x360 [xeno_nucleus])
 |   +end     0x80000000 -9925	  0.191  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9925	  0.096  xnheap_set_label+0x0 [xeno_nucleus] (xnpod_init+0x2c8 [xeno_nucleus])
 |   +begin   0x80000000 -9925	  0.270  xnheap_set_label+0x5d [xeno_nucleus] (xnpod_init+0x2c8 [xeno_nucleus])
 |  *+func               -9925	  0.112  __ipipe_restore_head+0x0 (xnheap_set_label+0x168 [xeno_nucleus])
 |   +end     0x80000000 -9925	  0.089  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9925	  0.109  kmalloc_order_trace+0x0 (xnpod_init+0x2dc [xeno_nucleus])
     +func               -9924	  0.090  __get_free_pages+0x0 (kmalloc_order_trace+0x2e)
     +func               -9924	  0.094  __alloc_pages_nodemask+0x0 (__get_free_pages+0x17)
     +func               -9924	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9924	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9924	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9924	  0.102  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9924	  0.090  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9924	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9924	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9924	  0.151  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     +func               -9923	  0.111  _raw_spin_lock_irqsave+0x0 (get_page_from_freelist+0x5de)
     #func               -9923	  0.131  __rmqueue+0x0 (get_page_from_freelist+0x5ef)
     #func               -9923	  0.156  get_pageblock_flags_group+0x0 (get_page_from_freelist+0x60b)
     #func               -9923	  0.103  __mod_zone_page_state+0x0 (get_page_from_freelist+0x622)
     #func               -9923	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9923	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9923	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9923	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9923	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9922	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9922	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9922	  0.261  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9922	  0.192  xnheap_init+0x0 [xeno_nucleus] (xnpod_init+0x2fe [xeno_nucleus])
     +func               -9922	  3.767  init_extent+0x0 [xeno_nucleus] (xnheap_init+0x1f1 [xeno_nucleus])
 |   +begin   0x80000000 -9918	  0.161  xnheap_init+0x239 [xeno_nucleus] (xnpod_init+0x2fe [xeno_nucleus])
 |  *+func               -9918	  0.102  __ipipe_restore_head+0x0 (xnheap_init+0x360 [xeno_nucleus])
 |   +end     0x80000000 -9918	  0.103  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9918	  0.103  xnheap_set_label+0x0 [xeno_nucleus] (xnpod_init+0x31b [xeno_nucleus])
 |   +begin   0x80000000 -9918	  0.198  xnheap_set_label+0x5d [xeno_nucleus] (xnpod_init+0x31b [xeno_nucleus])
 |  *+func               -9917	  0.111  __ipipe_restore_head+0x0 (xnheap_set_label+0x168 [xeno_nucleus])
 |   +end     0x80000000 -9917	  0.274  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9917	  0.271  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9917	  0.425  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9916	  0.243  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9916	  0.200  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9916	  0.110  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9916	  0.229  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9915	  0.105  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9915	  0.231  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9915	  0.110  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9915	  0.175  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9915	  0.302  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9915	  0.165  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9914	  0.161  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9914	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9914	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9914	  0.165  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9914	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9914	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9914	  0.258  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9913	  0.308  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9913	  0.176  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9913	  0.161  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9913	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9913	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9912	  0.098  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9912	  0.163  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9912	  0.112  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9912	  0.163  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9912	  0.088  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9912	  0.230  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9912	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9911	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9911	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9911	  0.155  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9911	  0.094  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9911	  0.171  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9911	  0.112  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9911	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9911	  0.174  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9910	  0.169  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9910	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9910	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9910	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9910	  0.156  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9910	  0.163  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9909	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9909	  0.185  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9909	  0.132  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9909	  0.165  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9909	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9909	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9909	  0.091  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9908	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9908	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9908	  0.114  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9908	  0.095  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9908	  0.090  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9908	  0.197  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9908	  0.160  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9908	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9907	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9907	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9907	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9907	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9907	  0.104  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9907	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9907	  0.249  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9906	  0.162  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9906	  0.162  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9906	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9906	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9906	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9906	  0.163  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9906	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9905	  0.192  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9905	  0.161  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9905	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9905	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9905	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9905	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9905	  0.091  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9904	  0.163  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9904	  0.102  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9904	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9904	  0.089  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9904	  0.201  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9904	  0.158  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9904	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9904	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9903	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9903	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9903	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9903	  0.103  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9903	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9903	  0.265  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9903	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9902	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9902	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9902	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9902	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9902	  0.163  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9902	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9902	  0.185  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9901	  0.185  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9901	  0.162  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9901	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9901	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9901	  0.091  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9901	  0.089  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9901	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9900	  0.104  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9900	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9900	  0.091  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9900	  0.200  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9900	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9900	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9900	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9899	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9899	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9899	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9899	  0.104  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9899	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9899	  0.272  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9899	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9898	  0.163  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9898	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9898	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9898	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9898	  0.163  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9898	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9898	  0.185  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9897	  0.110  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9897	  0.162  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9897	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9897	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9897	  0.091  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9897	  0.091  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9897	  0.183  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9896	  0.103  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9896	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9896	  0.091  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9896	  0.194  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9896	  0.160  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9896	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9896	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9896	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9895	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9895	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9895	  0.105  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9895	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9895	  0.290  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9895	  0.160  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9895	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9894	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9894	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9894	  0.158  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9894	  0.161  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9894	  0.104  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9894	  0.207  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9893	  0.188  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9893	  0.162  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9893	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9893	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9893	  0.091  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9893	  0.091  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9893	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9892	  0.103  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9892	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9892	  0.089  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9892	  0.194  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9892	  0.160  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9892	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9892	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9892	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9891	  0.090  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9891	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9891	  0.103  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9891	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9891	  0.174  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9891	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9891	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9890	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9890	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9890	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9890	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9890	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9890	  0.176  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9890	  0.111  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9890	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9889	  0.164  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9889	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9889	  0.091  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9889	  0.089  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9889	  0.161  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9889	  0.102  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9889	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9889	  0.091  xnsched_init+0x0 [xeno_nucleus] (xnpod_init+0x33a [xeno_nucleus])
     +func               -9888	  0.196  xnsched_rt_init+0x0 [xeno_nucleus] (xnsched_init+0x4e [xeno_nucleus])
     +func               -9888	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |   +begin   0x80000000 -9888	  0.162  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0xbe [xeno_nucleus])
 |  *+func               -9888	  0.102  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9888	  0.154  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9888	  0.089  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |   +begin   0x80000000 -9888	  0.162  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0xf3 [xeno_nucleus])
 |  *+func               -9887	  0.101  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9887	  0.094  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9887	  0.254  xnthread_init+0x0 [xeno_nucleus] (xnsched_init+0x174 [xeno_nucleus])
     +func               -9887	  0.158  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |   +begin   0x80000000 -9887	  0.162  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x15f [xeno_nucleus])
 |  *+func               -9887	  0.103  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9887	  0.152  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9886	  0.157  __xntimer_init+0x0 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |   +begin   0x80000000 -9886	  0.161  __xntimer_init+0xe9 [xeno_nucleus] (xnthread_init+0x19f [xeno_nucleus])
 |  *+func               -9886	  0.121  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9886	  0.200  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9886	  0.161  xnsched_set_policy+0x0 [xeno_nucleus] (xnthread_init+0x3ac [xeno_nucleus])
     +func               -9886	  0.161  __xntimer_init+0x0 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |   +begin   0x80000000 -9885	  0.165  __xntimer_init+0xe9 [xeno_nucleus] (xnsched_init+0x26a [xeno_nucleus])
 |  *+func               -9885	  0.101  __ipipe_restore_head+0x0 (__xntimer_init+0x21b [xeno_nucleus])
 |   +end     0x80000000 -9885	  0.092  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9885	  0.091  xntimer_migrate+0x0 [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |   +begin   0x80000000 -9885	  0.162  xntimer_migrate+0x2f [xeno_nucleus] (xnsched_init+0x2c4 [xeno_nucleus])
 |  *+func               -9885	  0.100  __ipipe_restore_head+0x0 (xntimer_migrate+0x140 [xeno_nucleus])
 |   +end     0x80000000 -9885	  0.103  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9885	  0.217  ipipe_virtualize_irq+0x0 (xnpod_init+0x3b1 [xeno_nucleus])
     +func               -9884	  0.112  ipipe_request_irq+0x0 (ipipe_virtualize_irq+0x13)
     +func               -9884	  0.098  __ipipe_spin_lock_irqsave+0x0 (ipipe_request_irq+0x48)
 |   +begin   0x80000001 -9884	  0.281  __ipipe_spin_lock_irqsave+0x93 (ipipe_request_irq+0x48)
 |   #func               -9884	  0.170  __ipipe_spin_unlock_irqrestore+0x0 (ipipe_request_irq+0x6e)
 |   +end     0x80000001 -9884	  0.183  ipipe_trace_end+0x19 (__ipipe_spin_unlock_irqrestore+0x39)
     +func               -9884	  0.091  xnregistry_init+0x0 [xeno_nucleus] (xnpod_init+0x3b6 [xeno_nucleus])
     +func               -9883	  0.091  kmalloc_order_trace+0x0 (xnregistry_init+0x1e [xeno_nucleus])
     +func               -9883	  0.089  __get_free_pages+0x0 (kmalloc_order_trace+0x2e)
     +func               -9883	  0.092  __alloc_pages_nodemask+0x0 (__get_free_pages+0x17)
     +func               -9883	  0.090  ipipe_root_only+0x0 (__alloc_pages_nodemask+0x1e5)
 |   +begin   0x80000001 -9883	  0.123  ipipe_root_only+0xa3 (__alloc_pages_nodemask+0x1e5)
 |   +end     0x80000001 -9883	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9883	  0.101  _cond_resched+0x0 (__alloc_pages_nodemask+0x1ea)
     +func               -9883	  0.089  next_zones_zonelist+0x0 (__alloc_pages_nodemask+0x115)
     +func               -9883	  0.091  get_page_from_freelist+0x0 (__alloc_pages_nodemask+0x148)
     +func               -9883	  0.096  next_zones_zonelist+0x0 (get_page_from_freelist+0x68)
     +func               -9883	  0.114  __zone_watermark_ok+0x0 (get_page_from_freelist+0x12c)
     +func               -9882	  0.121  _raw_spin_lock_irqsave+0x0 (get_page_from_freelist+0x5de)
     #func               -9882	  0.142  __rmqueue+0x0 (get_page_from_freelist+0x5ef)
     #func               -9882	  0.112  get_pageblock_flags_group+0x0 (get_page_from_freelist+0x60b)
     #func               -9882	  0.092  __mod_zone_page_state+0x0 (get_page_from_freelist+0x622)
     #func               -9882	  0.088  ipipe_restore_root+0x0 (get_page_from_freelist+0x42f)
     #func               -9882	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9882	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9882	  0.094  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9882	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9881	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9881	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9881	  0.437  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9881	  0.162  xnvfile_init_dir+0x0 [xeno_nucleus] (xnregistry_init+0x48 [xeno_nucleus])
     +func               -9881	  0.154  proc_mkdir+0x0 (xnvfile_init_dir+0x23 [xeno_nucleus])
     +func               -9880	  0.156  proc_mkdir_data+0x0 (proc_mkdir+0x15)
     +func               -9880	  0.162  __proc_create+0x0 (proc_mkdir_data+0x3a)
     +func               -9880	  0.190  _raw_spin_lock+0x0 (__proc_create+0x3a)
     +func               -9880	  0.190  __xlate_proc_name+0x0 (__proc_create+0x49)
     +func               -9880	  0.097  __kmalloc+0x0 (__proc_create+0x9b)
     +func               -9880	  0.107  kmalloc_slab+0x0 (__kmalloc+0x2e)
     +func               -9880	  0.091  ipipe_root_only+0x0 (__kmalloc+0x55)
 |   +begin   0x80000001 -9879	  0.120  ipipe_root_only+0xa3 (__kmalloc+0x55)
 |   +end     0x80000001 -9879	  0.107  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9879	  0.145  _cond_resched+0x0 (__kmalloc+0x5a)
     +func               -9879	  0.337  __slab_alloc.constprop.69+0x0 (__kmalloc+0x133)
     #func               -9879	  0.098  ipipe_restore_root+0x0 (__slab_alloc.constprop.69+0x4ef)
     #func               -9879	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9879	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9878	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9878	  0.089  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9878	  0.090  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9878	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9878	  0.130  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9878	  0.091  proc_register+0x0 (proc_mkdir_data+0x52)
     +func               -9878	  0.302  proc_alloc_inum+0x0 (proc_register+0x20)
     +func               -9878	  0.109  kmem_cache_alloc+0x0 (__idr_pre_get+0x74)
     +func               -9877	  0.094  ipipe_root_only+0x0 (kmem_cache_alloc+0x31)
 |   +begin   0x80000001 -9877	  0.121  ipipe_root_only+0xa3 (kmem_cache_alloc+0x31)
 |   +end     0x80000001 -9877	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9877	  0.383  _cond_resched+0x0 (kmem_cache_alloc+0x36)
     +func               -9877	  0.123  _raw_spin_lock_irqsave+0x0 (__idr_pre_get+0x38)
     #func               -9877	  0.096  __ipipe_spin_unlock_debug+0x0 (__idr_pre_get+0x54)
     #func               -9876	  0.089  _raw_spin_unlock_irqrestore+0x0 (__idr_pre_get+0x5f)
     #func               -9876	  0.087  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x1c)
     #func               -9876	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9876	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9876	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9876	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9876	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9876	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9876	  0.114  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9876	  0.430  _raw_spin_lock_irq+0x0 (proc_alloc_inum+0x24)
     #func               -9875	  0.109  _raw_spin_lock_irqsave+0x0 (get_from_free_list+0x1a)
     #func               -9875	  0.109  __ipipe_spin_unlock_debug+0x0 (get_from_free_list+0x44)
     #func               -9875	  0.100  _raw_spin_unlock_irqrestore+0x0 (get_from_free_list+0x4f)
     #func               -9875	  0.088  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9875	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9875	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9875	  0.131  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9874	  0.202  kmem_cache_free+0x0 (ida_get_new_above+0x228)
     #func               -9874	  0.097  ipipe_unstall_root+0x0 (proc_alloc_inum+0x45)
 |   #begin   0x80000000 -9874	  0.091  ipipe_unstall_root+0x1c (proc_alloc_inum+0x45)
 |   #func               -9874	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9874	  0.177  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9874	  1.247  _raw_spin_lock+0x0 (proc_register+0x6e)
     +func               -9872	  0.171  xnvfile_init_regular+0x0 [xeno_nucleus] (xnregistry_init+0x6a [xeno_nucleus])
     +func               -9872	  0.090  proc_create_data+0x0 (xnvfile_init_regular+0x41 [xeno_nucleus])
     +func               -9872	  0.100  __proc_create+0x0 (proc_create_data+0x4d)
     +func               -9872	  0.104  _raw_spin_lock+0x0 (__proc_create+0x3a)
     +func               -9872	  0.138  __xlate_proc_name+0x0 (__proc_create+0x49)
     +func               -9872	  0.101  __kmalloc+0x0 (__proc_create+0x9b)
     +func               -9872	  0.090  kmalloc_slab+0x0 (__kmalloc+0x2e)
     +func               -9872	  0.089  ipipe_root_only+0x0 (__kmalloc+0x55)
 |   +begin   0x80000001 -9872	  0.122  ipipe_root_only+0xa3 (__kmalloc+0x55)
 |   +end     0x80000001 -9871	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9871	  0.144  _cond_resched+0x0 (__kmalloc+0x5a)
     +func               -9871	  0.101  proc_register+0x0 (proc_create_data+0x69)
     +func               -9871	  0.091  proc_alloc_inum+0x0 (proc_register+0x20)
     +func               -9871	  0.090  kmem_cache_alloc+0x0 (__idr_pre_get+0x74)
     +func               -9871	  0.092  ipipe_root_only+0x0 (kmem_cache_alloc+0x31)
 |   +begin   0x80000001 -9871	  0.121  ipipe_root_only+0xa3 (kmem_cache_alloc+0x31)
 |   +end     0x80000001 -9871	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9871	  0.123  _cond_resched+0x0 (kmem_cache_alloc+0x36)
     +func               -9870	  0.111  _raw_spin_lock_irqsave+0x0 (__idr_pre_get+0x38)
     #func               -9870	  0.101  __ipipe_spin_unlock_debug+0x0 (__idr_pre_get+0x54)
     #func               -9870	  0.096  _raw_spin_unlock_irqrestore+0x0 (__idr_pre_get+0x5f)
     #func               -9870	  0.089  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x1c)
     #func               -9870	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9870	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9870	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9870	  0.090  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9870	  0.092  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9870	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9869	  0.090  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9869	  0.141  _raw_spin_lock_irq+0x0 (proc_alloc_inum+0x24)
     #func               -9869	  0.111  _raw_spin_lock_irqsave+0x0 (get_from_free_list+0x1a)
     #func               -9869	  0.096  __ipipe_spin_unlock_debug+0x0 (get_from_free_list+0x44)
     #func               -9869	  0.097  _raw_spin_unlock_irqrestore+0x0 (get_from_free_list+0x4f)
     #func               -9869	  0.087  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9869	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9869	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9869	  0.112  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9868	  0.094  kmem_cache_free+0x0 (ida_get_new_above+0x228)
     #func               -9868	  0.087  ipipe_unstall_root+0x0 (proc_alloc_inum+0x45)
 |   #begin   0x80000000 -9868	  0.091  ipipe_unstall_root+0x1c (proc_alloc_inum+0x45)
 |   #func               -9868	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9868	  0.109  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9868	  0.191  _raw_spin_lock+0x0 (proc_register+0x6e)
     +func               -9868	  0.095  rthal_apc_alloc+0x0 (xnregistry_init+0x89 [xeno_nucleus])
 |   +begin   0x80000000 -9868	  0.357  rthal_apc_alloc+0x3b (xnregistry_init+0x89 [xeno_nucleus])
 |  *+func               -9867	  0.115  __ipipe_restore_head+0x0 (rthal_apc_alloc+0x123)
 |   +end     0x80000000 -9867	  5.592  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -9862	  0.185  kmem_cache_alloc_trace+0x0 (xnregistry_init+0x1c5 [xeno_nucleus])
     +func               -9861	  0.090  ipipe_root_only+0x0 (kmem_cache_alloc_trace+0x38)
 |   +begin   0x80000001 -9861	  0.130  ipipe_root_only+0xa3 (kmem_cache_alloc_trace+0x38)
 |   +end     0x80000001 -9861	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     +func               -9861	  0.211  _cond_resched+0x0 (kmem_cache_alloc_trace+0x3d)
     +func               -9861	  0.322  __slab_alloc.constprop.69+0x0 (kmem_cache_alloc_trace+0xf3)
     #func               -9861	  0.096  ipipe_restore_root+0x0 (__slab_alloc.constprop.69+0x4ef)
     #func               -9860	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9860	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9860	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9860	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9860	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9860	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9860	  0.604  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9859	  0.191  xnsynch_init+0x0 [xeno_nucleus] (xnregistry_init+0x200 [xeno_nucleus])
     +func               -9859	  0.277  rthal_smi_init+0x0 (xnpod_init+0x3c6 [xeno_nucleus])
     +func               -9859	  0.170  pci_get_class+0x0 (rthal_smi_init+0x24)
     +func               -9859	  0.176  pci_get_dev_by_id+0x0 (pci_get_class+0x44)
     +func               -9858	  0.560  bus_find_device+0x0 (pci_get_dev_by_id+0x4e)
     +func               -9858	  0.249  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9858	  0.169  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9857	  0.201  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9857	  0.165  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9857	  0.261  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9857	  0.167  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9857	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9857	  0.168  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9856	  0.108  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9856	  0.164  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9856	  0.104  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9856	  0.157  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9856	  0.107  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9856	  0.165  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9856	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9855	  0.157  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9855	  0.107  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9855	  0.169  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9855	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9855	  0.268  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9855	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9855	  0.165  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9854	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9854	  0.156  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9854	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9854	  0.168  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9854	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9854	  0.165  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9854	  0.107  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9853	  0.156  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9853	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9853	  0.167  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9853	  0.105  _raw_spin_lock+0x0 (klist_next+0x20)
     +func               -9853	  0.255  match_pci_dev_by_id+0x0 (bus_find_device+0x62)
     +func               -9853	  0.196  get_device+0x0 (bus_find_device+0x98)
     +func               -9852	  0.269  _raw_spin_lock+0x0 (klist_put+0x25)
     +func               -9852	  0.115  printk+0x0 (rthal_smi_init+0xe6)
 |   +begin   0x80000001 -9852	  0.158  printk+0x66 (rthal_smi_init+0xe6)
 |   +end     0x80000001 -9852	  0.181  ipipe_trace_end+0x19 (printk+0x15c)
     +func               -9852	  0.298  vprintk_emit+0x0 (printk+0x178)
     #func               -9851	  0.378  _raw_spin_lock+0x0 (vprintk_emit+0x10f)
     #func               -9851	  0.422  log_store+0x0 (vprintk_emit+0x1cb)
     #func               -9851	  0.172  console_trylock+0x0 (vprintk_emit+0x1d6)
     #func               -9850	  0.088  down_trylock+0x0 (console_trylock+0x19)
     #func               -9850	  0.118  _raw_spin_lock_irqsave+0x0 (down_trylock+0x16)
     #func               -9850	  0.101  __ipipe_spin_unlock_debug+0x0 (down_trylock+0x2f)
     #func               -9850	  0.100  _raw_spin_unlock_irqrestore+0x0 (down_trylock+0x3a)
     #func               -9850	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9850	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9850	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9850	  0.310  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9849	  0.087  console_unlock+0x0 (vprintk_emit+0x285)
     #func               -9849	  0.127  _raw_spin_lock_irqsave+0x0 (console_unlock+0x34)
     #func               -9849	  0.089  __ipipe_spin_unlock_debug+0x0 (console_unlock+0x6f)
     #func               -9849	  0.098  _raw_spin_unlock_irqrestore+0x0 (console_unlock+0x7e)
     #func               -9849	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9849	  0.091  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9849	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9849	  0.111  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9849	  0.318  _raw_spin_lock_irqsave+0x0 (console_unlock+0x94)
     #func               -9848	  0.327  msg_print_text+0x0 (console_unlock+0x38b)
     #func               -9848	  0.109  print_prefix+0x0 (msg_print_text+0xc0)
     #func               -9848	  0.584  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9847	  0.108  print_prefix+0x0 (msg_print_text+0x160)
     #func               -9847	  0.600  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9847	  0.097  print_prefix+0x0 (msg_print_text+0xc0)
     #func               -9847	  0.177  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9846	  0.097  print_prefix+0x0 (msg_print_text+0x160)
     #func               -9846	  0.292  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9846	  0.109  print_prefix+0x0 (msg_print_text+0xc0)
     #func               -9846	  0.155  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9846	  0.089  print_prefix+0x0 (msg_print_text+0x160)
     #func               -9846	  0.245  print_time.part.4+0x0 (print_prefix+0x6f)
     #func               -9845	  0.089  call_console_drivers.constprop.15+0x0 (console_unlock+0x3d9)
     #func               -9845	  0.100  ipipe_restore_root+0x0 (console_unlock+0x3e8)
     #func               -9845	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9845	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9845	  0.111  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9845	  0.141  _raw_spin_lock_irqsave+0x0 (console_unlock+0x94)
     #func               -9845	  0.098  up+0x0 (console_unlock+0x1cf)
     #func               -9845	  0.121  _raw_spin_lock_irqsave+0x0 (up+0x14)
     #func               -9844	  0.090  __ipipe_spin_unlock_debug+0x0 (up+0x30)
     #func               -9844	  0.088  _raw_spin_unlock_irqrestore+0x0 (up+0x3b)
     #func               -9844	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9844	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9844	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9844	  0.114  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9844	  0.107  _raw_spin_lock+0x0 (console_unlock+0x1db)
     #func               -9844	  0.098  __ipipe_spin_unlock_debug+0x0 (console_unlock+0x1f1)
     #func               -9844	  0.087  _raw_spin_unlock_irqrestore+0x0 (console_unlock+0x200)
     #func               -9844	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -9844	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9843	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9843	  0.177  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9843	  0.225  wake_up_klogd+0x0 (console_unlock+0x21c)
     #func               -9843	  0.088  ipipe_restore_root+0x0 (vprintk_emit+0x216)
     #func               -9843	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -9843	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -9843	  0.102  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -9843	  0.088  ipipe_unstall_root+0x0 (ipipe_restore_root+0x3d)
 |   #begin   0x80000000 -9842	  0.091  ipipe_unstall_root+0x1c (ipipe_restore_root+0x3d)
 |   #func               -9842	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -9842	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -9842	  0.115  pci_dev_put+0x0 (rthal_smi_init+0xee)
     +func               -9842	  0.115  put_device+0x0 (pci_dev_put+0x1a)
     +func               -9842	  0.264  rthal_smi_disable+0x0 (xnpod_init+0x3cb [xeno_nucleus])
     +func               -9842	  0.100  xnshadow_grab_events+0x0 [xeno_nucleus] (xnpod_init+0x3d0 [xeno_nucleus])
     +func               -9842	  0.290  ipipe_catch_event+0x0 (xnshadow_grab_events+0x21 [xeno_nucleus])
     +func               -9841	  0.164  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -9841	  0.144  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -9841	  0.311  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -9841	  0.170  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -9840	  3.507  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -9837	  0.927  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -9836	  0.258  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func               -9836	  0.171  ipipe_catch_event+0x0 (xnshadow_grab_events+0x39 [xeno_nucleus])
     +func               -9836	  0.117  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -9835	  0.110  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -9835	  0.162  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -9835	  0.120  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -9835	  3.310  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -9832	  0.885  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -9831	  0.207  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func               -9831	  0.178  ipipe_catch_event+0x0 (xnshadow_grab_events+0x51 [xeno_nucleus])
     +func               -9830	  0.108  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -9830	  0.107  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -9830	  0.167  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -9830	  0.123  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -9830	1782.548  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -8047	  1.057  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -8046	 27.121  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
 |   +func               -8019	  0.201  __ipipe_handle_irq+0x0 (apic_timer_interrupt+0x7c)
 |   +func               -8019	  0.137  __ipipe_dispatch_irq+0x0 (__ipipe_handle_irq+0x8d)
 |   +func               -8019	  0.155  __ipipe_ack_apic+0x0 (__ipipe_dispatch_irq+0x357)
 |   +func               -8019	  0.152  __ipipe_set_irq_pending+0x0 (__ipipe_dispatch_irq+0x216)
 |   +func               -8019	  0.151  __ipipe_do_sync_pipeline+0x0 (__ipipe_dispatch_irq+0x2a1)
 |   +func               -8018	  0.127  __ipipe_do_sync_stage+0x0 (__ipipe_do_sync_pipeline+0x115)
 |   #end     0x80000000 -8018	  0.097  ipipe_trace_end+0x19 (__ipipe_do_sync_stage+0xe8)
     #func               -8018	  0.096  __ipipe_do_IRQ+0x0 (__ipipe_do_sync_stage+0x1c8)
     #func               -8018	  0.120  __ipipe_get_ioapic_irq_vector+0x0 (__ipipe_do_IRQ+0x24)
     #func               -8018	  0.090  smp_apic_timer_interrupt+0x0 (__ipipe_do_IRQ+0x79)
     #func               -8018	  0.088  irq_enter+0x0 (smp_apic_timer_interrupt+0x2a)
     #func               -8018	  0.135  rcu_irq_enter+0x0 (irq_enter+0x17)
     #func               -8018	  0.089  ipipe_restore_root+0x0 (rcu_irq_enter+0x92)
     #func               -8018	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8018	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8017	  0.147  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8017	  0.100  exit_idle+0x0 (smp_apic_timer_interrupt+0x2f)
     #func               -8017	  0.104  hrtimer_interrupt+0x0 (smp_apic_timer_interrupt+0x55)
     #func               -8017	  0.092  _raw_spin_lock+0x0 (hrtimer_interrupt+0x4f)
     #func               -8017	  0.123  ktime_get_update_offsets+0x0 (hrtimer_interrupt+0x81)
     #func               -8017	  0.110  __run_hrtimer+0x0 (hrtimer_interrupt+0xf7)
     #func               -8017	  0.150  __remove_hrtimer+0x0 (__run_hrtimer+0x67)
     #func               -8017	  0.089  tick_sched_timer+0x0 (__run_hrtimer+0x91)
     #func               -8016	  0.121  ktime_get+0x0 (tick_sched_timer+0x1f)
     #func               -8016	  0.128  _raw_spin_lock+0x0 (tick_sched_timer+0x8f)
     #func               -8016	  0.097  do_timer+0x0 (tick_sched_timer+0xcb)
     #func               -8016	  0.150  _raw_spin_lock_irqsave+0x0 (do_timer+0x2c)
     #func               -8016	  0.110  ntp_tick_length+0x0 (do_timer+0x83)
     #func               -8016	  0.148  ntp_tick_length+0x0 (do_timer+0x2ec)
     #func               -8016	  0.098  timekeeping_update.constprop.8+0x0 (do_timer+0x1e1)
     #func               -8016	  0.111  update_vsyscall+0x0 (timekeeping_update.constprop.8+0x1d)
     #func               -8015	  0.102  set_normalized_timespec+0x0 (update_vsyscall+0xf7)
     #func               -8015	  0.100  ipipe_update_hostrt+0x0 (update_vsyscall+0x12c)
     #func               -8015	  0.088  ipipe_root_only+0x0 (ipipe_update_hostrt+0x28)
 |   #begin   0x80000001 -8015	  0.117  ipipe_root_only+0xa3 (ipipe_update_hostrt+0x28)
 |   #end     0x80000001 -8015	  0.103  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8015	  0.095  __ipipe_notify_kevent+0x0 (ipipe_update_hostrt+0x7d)
     #func               -8015	  0.088  ipipe_root_only+0x0 (__ipipe_notify_kevent+0x21)
 |   #begin   0x80000001 -8015	  0.117  ipipe_root_only+0xa3 (__ipipe_notify_kevent+0x21)
 |   #end     0x80000001 -8015	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   #begin   0x80000001 -8015	  0.116  __ipipe_notify_kevent+0xcb (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001 -8014	  0.097  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xf2)
     #func               -8014	  0.096  ipipe_kevent_hook+0x0 (__ipipe_notify_kevent+0x81)
     #func               -8014	  0.091  hostrt_event+0x0 [xeno_nucleus] (ipipe_kevent_hook+0x1f)
     #func               -8014	  0.089  __ipipe_spin_lock_irqsave+0x0 (hostrt_event+0x19 [xeno_nucleus])
 |   #begin   0x80000001 -8014	  0.167  __ipipe_spin_lock_irqsave+0x93 (hostrt_event+0x19 [xeno_nucleus])
 |   #func               -8014	  0.098  __ipipe_spin_unlock_irqrestore+0x0 (hostrt_event+0x87 [xeno_nucleus])
 |   #end     0x80000001 -8014	  0.095  ipipe_trace_end+0x19 (__ipipe_spin_unlock_irqrestore+0x39)
 |   #begin   0x80000001 -8014	  0.103  __ipipe_notify_kevent+0xde (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001 -8014	  0.095  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xaa)
     #func               -8014	  0.087  raw_notifier_call_chain+0x0 (timekeeping_update.constprop.8+0x32)
     #func               -8013	  0.088  notifier_call_chain+0x0 (raw_notifier_call_chain+0x16)
     #func               -8013	  0.107  __ipipe_spin_unlock_debug+0x0 (do_timer+0x1f5)
     #func               -8013	  0.088  _raw_spin_unlock_irqrestore+0x0 (do_timer+0x204)
     #func               -8013	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -8013	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8013	  0.116  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8013	  0.108  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8013	  0.109  calc_global_load+0x0 (do_timer+0x20c)
     #func               -8013	  0.100  update_root_process_times+0x0 (tick_sched_timer+0x3f)
     #func               -8013	  0.089  update_process_times+0x0 (update_root_process_times+0x57)
     #func               -8012	  0.108  account_process_tick+0x0 (update_process_times+0x2d)
     #func               -8012	  0.191  account_system_time+0x0 (account_process_tick+0x3d)
     #func               -8012	  0.185  cpuacct_account_field+0x0 (account_system_time+0xc6)
     #func               -8012	  0.091  acct_account_cputime+0x0 (account_system_time+0xce)
     #func               -8012	  0.128  __acct_update_integrals+0x0 (acct_account_cputime+0x1c)
     #func               -8012	  0.135  jiffies_to_timeval+0x0 (__acct_update_integrals+0x73)
     #func               -8012	  0.084  ipipe_restore_root+0x0 (__acct_update_integrals+0x93)
     #func               -8012	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8011	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8011	  0.107  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8011	  0.092  hrtimer_run_queues+0x0 (update_process_times+0x32)
     #func               -8011	  0.109  raise_softirq+0x0 (update_process_times+0x3c)
     #func               -8011	  0.088  ipipe_restore_root+0x0 (raise_softirq+0xda)
     #func               -8011	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8011	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8011	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8011	  0.148  rcu_check_callbacks+0x0 (update_process_times+0x47)
     #func               -8010	  0.152  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func               -8010	  0.214  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func               -8010	  0.120  wake_up_klogd_work_func+0x0 (__irq_work_run+0x8f)
     #func               -8010	  0.089  __wake_up+0x0 (wake_up_klogd_work_func+0x42)
     #func               -8010	  0.121  _raw_spin_lock_irqsave+0x0 (__wake_up+0x23)
     #func               -8010	  0.092  __wake_up_common+0x0 (__wake_up+0x39)
     #func               -8010	  0.087  ipipe_root_only+0x0 (__wake_up_common+0x2f)
 |   #begin   0x80000001 -8010	  0.118  ipipe_root_only+0xa3 (__wake_up_common+0x2f)
 |   #end     0x80000001 -8009	  0.415  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8009	  0.101  autoremove_wake_function+0x0 (__wake_up_common+0x60)
     #func               -8009	  0.096  default_wake_function+0x0 (autoremove_wake_function+0x12)
     #func               -8009	  0.101  try_to_wake_up+0x0 (default_wake_function+0x12)
     #func               -8009	  0.355  _raw_spin_lock_irqsave+0x0 (try_to_wake_up+0x31)
     #func               -8008	  0.241  task_waking_fair+0x0 (try_to_wake_up+0xb4)
     #func               -8008	  0.172  select_task_rq_fair+0x0 (try_to_wake_up+0xc6)
     #func               -8008	  0.120  source_load+0x0 (select_task_rq_fair+0x3ba)
     #func               -8008	  0.274  target_load+0x0 (select_task_rq_fair+0x3c9)
     #func               -8008	  0.335  effective_load.isra.35+0x0 (select_task_rq_fair+0x442)
     #func               -8007	  0.164  effective_load.isra.35+0x0 (select_task_rq_fair+0x49a)
     #func               -8007	  0.148  idle_cpu+0x0 (select_task_rq_fair+0x50f)
     #func               -8007	  0.114  _raw_spin_lock+0x0 (try_to_wake_up+0x1c0)
     #func               -8007	  0.090  ttwu_do_activate.constprop.82+0x0 (try_to_wake_up+0x1cb)
     #func               -8007	  0.095  activate_task+0x0 (ttwu_do_activate.constprop.82+0x33)
     #func               -8007	  0.096  enqueue_task+0x0 (activate_task+0x23)
     #func               -8007	  0.180  update_rq_clock.part.71+0x0 (enqueue_task+0x6c)
     #func               -8006	  0.121  enqueue_task_fair+0x0 (enqueue_task+0x51)
     #func               -8006	  0.229  update_curr+0x0 (enqueue_task_fair+0x44c)
     #func               -8006	  0.121  __compute_runnable_contrib.part.48+0x0 (enqueue_task_fair+0xf61)
     #func               -8006	  0.140  update_cfs_rq_blocked_load+0x0 (enqueue_task_fair+0x28e)
     #func               -8006	  0.115  account_entity_enqueue+0x0 (enqueue_task_fair+0x299)
     #func               -8006	  0.124  update_cfs_shares+0x0 (enqueue_task_fair+0x2a1)
     #func               -8006	  0.222  place_entity+0x0 (enqueue_task_fair+0x2ae)
     #func               -8005	  0.134  __enqueue_entity+0x0 (enqueue_task_fair+0x3ec)
     #func               -8005	  0.208  update_curr+0x0 (enqueue_task_fair+0x44c)
     #func               -8005	  0.129  update_cfs_rq_blocked_load+0x0 (enqueue_task_fair+0x28e)
     #func               -8005	  0.124  account_entity_enqueue+0x0 (enqueue_task_fair+0x299)
     #func               -8005	  0.120  update_cfs_shares+0x0 (enqueue_task_fair+0x2a1)
     #func               -8005	  0.191  place_entity+0x0 (enqueue_task_fair+0x2ae)
     #func               -8004	  0.165  __enqueue_entity+0x0 (enqueue_task_fair+0x3ec)
     #func               -8004	  0.110  hrtick_update+0x0 (enqueue_task_fair+0xb1e)
     #func               -8004	  0.101  ttwu_do_wakeup+0x0 (ttwu_do_activate.constprop.82+0x5d)
     #func               -8004	  0.160  check_preempt_curr+0x0 (ttwu_do_wakeup+0x19)
     #func               -8004	  0.211  resched_task+0x0 (check_preempt_curr+0x75)
     #func               -8004	  0.122  native_smp_send_reschedule+0x0 (resched_task+0x64)
     #func               -8004	  0.098  flat_send_IPI_mask+0x0 (native_smp_send_reschedule+0x47)
 |   #begin   0x80000001 -8003	  0.142  flat_send_IPI_mask+0xef (native_smp_send_reschedule+0x47)
 |   #end     0x80000001 -8003	  0.112  ipipe_trace_end+0x19 (flat_send_IPI_mask+0xaf)
     #func               -8003	  0.102  ttwu_stat+0x0 (try_to_wake_up+0x1e8)
     #func               -8003	  0.087  __ipipe_spin_unlock_debug+0x0 (try_to_wake_up+0x1f0)
     #func               -8003	  0.088  _raw_spin_unlock_irqrestore+0x0 (try_to_wake_up+0x1fb)
     #func               -8003	  0.087  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -8003	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8003	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8003	  0.128  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8002	  0.088  __ipipe_spin_unlock_debug+0x0 (__wake_up+0x41)
     #func               -8002	  0.088  _raw_spin_unlock_irqrestore+0x0 (__wake_up+0x4c)
     #func               -8002	  0.087  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -8002	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -8002	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -8002	  0.125  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -8002	  0.125  scheduler_tick+0x0 (update_process_times+0x66)
     #func               -8002	  0.115  _raw_spin_lock+0x0 (scheduler_tick+0x44)
     #func               -8002	  0.164  update_rq_clock.part.71+0x0 (scheduler_tick+0x1b8)
     #func               -8001	  0.098  task_tick_fair+0x0 (scheduler_tick+0x151)
     #func               -8001	  0.183  update_curr+0x0 (task_tick_fair+0x2ab)
     #func               -8001	  0.117  update_min_vruntime+0x0 (update_curr+0x79)
     #func               -8001	  0.120  cpuacct_charge+0x0 (update_curr+0x9f)
     #func               -8001	  0.148  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func               -8001	  0.148  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func               -8001	  0.101  update_curr+0x0 (update_cfs_shares+0xd0)
     #func               -8001	  0.102  update_min_vruntime+0x0 (update_curr+0x79)
     #func               -8000	  0.122  account_entity_dequeue+0x0 (update_cfs_shares+0x87)
     #func               -8000	  0.104  account_entity_enqueue+0x0 (update_cfs_shares+0xa4)
     #func               -8000	  0.121  update_curr+0x0 (task_tick_fair+0x2ab)
     #func               -8000	  0.105  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func               -8000	  0.210  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func               -8000	  0.115  trigger_load_balance+0x0 (scheduler_tick+0x185)
     #func               -8000	  0.132  run_posix_cpu_timers+0x0 (update_process_times+0x6e)
     #func               -8000	  0.092  profile_tick+0x0 (tick_sched_timer+0x49)
     #func               -7999	  0.110  hrtimer_forward+0x0 (tick_sched_timer+0x5b)
     #func               -7999	  0.094  _raw_spin_lock+0x0 (__run_hrtimer+0xa1)
     #func               -7999	  0.164  enqueue_hrtimer+0x0 (__run_hrtimer+0xbc)
     #func               -7999	  0.089  tick_program_event+0x0 (hrtimer_interrupt+0x136)
     #func               -7999	  0.089  clockevents_program_event+0x0 (tick_program_event+0x24)
     #func               -7999	  0.107  ktime_get+0x0 (clockevents_program_event+0x39)
     #func               -7999	  0.176  lapic_next_deadline+0x0 (clockevents_program_event+0x6b)
     #func               -7999	  0.098  irq_exit+0x0 (smp_apic_timer_interrupt+0x5a)
     #func               -7999	  0.121  do_softirq+0x0 (irq_exit+0x7d)
     #func               -7998	  0.088  __do_softirq+0x0 (call_softirq+0x1e)
     #func               -7998	  0.090  msecs_to_jiffies+0x0 (__do_softirq+0x20)
     #func               -7998	  0.088  ipipe_unstall_root+0x0 (__do_softirq+0xa8)
 |   #begin   0x80000000 -7998	  0.091  ipipe_unstall_root+0x1c (__do_softirq+0xa8)
 |   #func               -7998	  0.141  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -7998	  0.120  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -7998	  0.098  run_timer_softirq+0x0 (__do_softirq+0xf7)
     +func               -7998	  0.110  hrtimer_run_pending+0x0 (run_timer_softirq+0x24)
     +func               -7998	  0.151  _raw_spin_lock_irq+0x0 (run_timer_softirq+0x3d)
     #func               -7997	  0.090  ipipe_unstall_root+0x0 (run_timer_softirq+0x18f)
 |   #begin   0x80000000 -7997	  0.091  ipipe_unstall_root+0x1c (run_timer_softirq+0x18f)
 |   #func               -7997	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -7997	  0.089  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -7997	  0.105  rcu_bh_qs+0x0 (__do_softirq+0x11b)
     #func               -7997	  0.110  __local_bh_enable+0x0 (__do_softirq+0x17a)
     #func               -7997	  0.088  ipipe_restore_root+0x0 (do_softirq+0x8a)
     #func               -7997	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -7997	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -7996	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -7996	  0.118  rcu_irq_exit+0x0 (irq_exit+0x50)
     #func               -7996	  0.088  ipipe_restore_root+0x0 (rcu_irq_exit+0x8a)
     #func               -7996	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -7996	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -7996	  0.355  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   +end     0x000000ef -7996	  0.381  ipipe_trace_end+0x19 (apic_timer_interrupt+0x8f)
     +func               -7995	  0.137  ipipe_catch_event+0x0 (xnshadow_grab_events+0x69 [xeno_nucleus])
     +func               -7995	  0.092  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -7995	  0.088  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -7995	  0.160  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -7995	  0.100  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -7995	  3.098  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -7992	  1.004  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -7991	  0.203  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func               -7990	  0.172  ipipe_catch_event+0x0 (xnshadow_grab_events+0x81 [xeno_nucleus])
     +func               -7990	  0.111  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -7990	  0.110  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -7990	  0.164  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -7990	  0.122  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -7990	  3.148  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -7987	  1.029  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -7985	  0.189  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func               -7985	  0.243  ipipe_catch_event+0x0 (xnshadow_grab_events+0x99 [xeno_nucleus])
     +func               -7985	  0.131  ipipe_set_hooks+0x0 (ipipe_catch_event+0xbb)
     +func               -7985	  0.110  ipipe_critical_enter+0x0 (ipipe_set_hooks+0x45)
 |   +begin   0x80000001 -7985	  0.172  ipipe_critical_enter+0x229 (ipipe_set_hooks+0x45)
 |   +func               -7985	  0.120  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -7985	3934.961  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -4050	  1.023  ipipe_critical_exit+0x0 (ipipe_set_hooks+0x14d)
 |   +end     0x80000001 -4049	 26.631  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
 |   +func               -4022	  0.205  __ipipe_handle_irq+0x0 (apic_timer_interrupt+0x7c)
 |   +func               -4022	  0.115  __ipipe_dispatch_irq+0x0 (__ipipe_handle_irq+0x8d)
 |   +func               -4022	  0.128  __ipipe_ack_apic+0x0 (__ipipe_dispatch_irq+0x357)
 |   +func               -4021	  0.143  __ipipe_set_irq_pending+0x0 (__ipipe_dispatch_irq+0x216)
 |   +func               -4021	  0.152  __ipipe_do_sync_pipeline+0x0 (__ipipe_dispatch_irq+0x2a1)
 |   +func               -4021	  0.129  __ipipe_do_sync_stage+0x0 (__ipipe_do_sync_pipeline+0x115)
 |   #end     0x80000000 -4021	  0.107  ipipe_trace_end+0x19 (__ipipe_do_sync_stage+0xe8)
     #func               -4021	  0.089  __ipipe_do_IRQ+0x0 (__ipipe_do_sync_stage+0x1c8)
     #func               -4021	  0.102  __ipipe_get_ioapic_irq_vector+0x0 (__ipipe_do_IRQ+0x24)
     #func               -4021	  0.097  smp_apic_timer_interrupt+0x0 (__ipipe_do_IRQ+0x79)
     #func               -4021	  0.097  irq_enter+0x0 (smp_apic_timer_interrupt+0x2a)
     #func               -4021	  0.127  rcu_irq_enter+0x0 (irq_enter+0x17)
     #func               -4020	  0.089  ipipe_restore_root+0x0 (rcu_irq_enter+0x92)
     #func               -4020	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4020	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4020	  0.123  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4020	  0.103  exit_idle+0x0 (smp_apic_timer_interrupt+0x2f)
     #func               -4020	  0.105  hrtimer_interrupt+0x0 (smp_apic_timer_interrupt+0x55)
     #func               -4020	  0.092  _raw_spin_lock+0x0 (hrtimer_interrupt+0x4f)
     #func               -4020	  0.117  ktime_get_update_offsets+0x0 (hrtimer_interrupt+0x81)
     #func               -4020	  0.100  __run_hrtimer+0x0 (hrtimer_interrupt+0xf7)
     #func               -4019	  0.107  __remove_hrtimer+0x0 (__run_hrtimer+0x67)
     #func               -4019	  0.088  tick_sched_timer+0x0 (__run_hrtimer+0x91)
     #func               -4019	  0.111  ktime_get+0x0 (tick_sched_timer+0x1f)
     #func               -4019	  0.092  _raw_spin_lock+0x0 (tick_sched_timer+0x8f)
     #func               -4019	  0.094  do_timer+0x0 (tick_sched_timer+0xcb)
     #func               -4019	  0.148  _raw_spin_lock_irqsave+0x0 (do_timer+0x2c)
     #func               -4019	  0.096  ntp_tick_length+0x0 (do_timer+0x83)
     #func               -4019	  0.141  ntp_tick_length+0x0 (do_timer+0x2ec)
     #func               -4019	  0.101  timekeeping_update.constprop.8+0x0 (do_timer+0x1e1)
     #func               -4018	  0.094  update_vsyscall+0x0 (timekeeping_update.constprop.8+0x1d)
     #func               -4018	  0.102  set_normalized_timespec+0x0 (update_vsyscall+0xf7)
     #func               -4018	  0.089  ipipe_update_hostrt+0x0 (update_vsyscall+0x12c)
     #func               -4018	  0.089  ipipe_root_only+0x0 (ipipe_update_hostrt+0x28)
 |   #begin   0x80000001 -4018	  0.120  ipipe_root_only+0xa3 (ipipe_update_hostrt+0x28)
 |   #end     0x80000001 -4018	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4018	  0.095  __ipipe_notify_kevent+0x0 (ipipe_update_hostrt+0x7d)
     #func               -4018	  0.088  ipipe_root_only+0x0 (__ipipe_notify_kevent+0x21)
 |   #begin   0x80000001 -4018	  0.121  ipipe_root_only+0xa3 (__ipipe_notify_kevent+0x21)
 |   #end     0x80000001 -4018	  0.095  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   #begin   0x80000001 -4017	  0.103  __ipipe_notify_kevent+0xcb (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001 -4017	  0.092  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xf2)
     #func               -4017	  0.089  ipipe_kevent_hook+0x0 (__ipipe_notify_kevent+0x81)
     #func               -4017	  0.089  hostrt_event+0x0 [xeno_nucleus] (ipipe_kevent_hook+0x1f)
     #func               -4017	  0.089  __ipipe_spin_lock_irqsave+0x0 (hostrt_event+0x19 [xeno_nucleus])
 |   #begin   0x80000001 -4017	  0.137  __ipipe_spin_lock_irqsave+0x93 (hostrt_event+0x19 [xeno_nucleus])
 |   #func               -4017	  0.092  __ipipe_spin_unlock_irqrestore+0x0 (hostrt_event+0x87 [xeno_nucleus])
 |   #end     0x80000001 -4017	  0.097  ipipe_trace_end+0x19 (__ipipe_spin_unlock_irqrestore+0x39)
 |   #begin   0x80000001 -4017	  0.092  __ipipe_notify_kevent+0xde (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001 -4017	  0.097  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xaa)
     #func               -4017	  0.089  raw_notifier_call_chain+0x0 (timekeeping_update.constprop.8+0x32)
     #func               -4016	  0.090  notifier_call_chain+0x0 (raw_notifier_call_chain+0x16)
     #func               -4016	  0.087  __ipipe_spin_unlock_debug+0x0 (do_timer+0x1f5)
     #func               -4016	  0.088  _raw_spin_unlock_irqrestore+0x0 (do_timer+0x204)
     #func               -4016	  0.087  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func               -4016	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4016	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4016	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4016	  0.091  calc_global_load+0x0 (do_timer+0x20c)
     #func               -4016	  0.090  update_root_process_times+0x0 (tick_sched_timer+0x3f)
     #func               -4016	  0.087  update_process_times+0x0 (update_root_process_times+0x57)
     #func               -4015	  0.110  account_process_tick+0x0 (update_process_times+0x2d)
     #func               -4015	  0.109  account_system_time+0x0 (account_process_tick+0x3d)
     #func               -4015	  0.098  cpuacct_account_field+0x0 (account_system_time+0xc6)
     #func               -4015	  0.087  acct_account_cputime+0x0 (account_system_time+0xce)
     #func               -4015	  0.109  __acct_update_integrals+0x0 (acct_account_cputime+0x1c)
     #func               -4015	  0.097  jiffies_to_timeval+0x0 (__acct_update_integrals+0x73)
     #func               -4015	  0.087  ipipe_restore_root+0x0 (__acct_update_integrals+0x93)
     #func               -4015	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4015	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4015	  0.107  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4014	  0.089  hrtimer_run_queues+0x0 (update_process_times+0x32)
     #func               -4014	  0.109  raise_softirq+0x0 (update_process_times+0x3c)
     #func               -4014	  0.088  ipipe_restore_root+0x0 (raise_softirq+0xda)
     #func               -4014	  0.090  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4014	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4014	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4014	  0.130  rcu_check_callbacks+0x0 (update_process_times+0x47)
     #func               -4014	  0.149  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func               -4014	  0.117  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func               -4013	  0.101  scheduler_tick+0x0 (update_process_times+0x66)
     #func               -4013	  0.116  _raw_spin_lock+0x0 (scheduler_tick+0x44)
     #func               -4013	  0.149  update_rq_clock.part.71+0x0 (scheduler_tick+0x1b8)
     #func               -4013	  0.101  task_tick_fair+0x0 (scheduler_tick+0x151)
     #func               -4013	  0.101  update_curr+0x0 (task_tick_fair+0x2ab)
     #func               -4013	  0.088  update_min_vruntime+0x0 (update_curr+0x79)
     #func               -4013	  0.123  cpuacct_charge+0x0 (update_curr+0x9f)
     #func               -4013	  0.137  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func               -4013	  0.127  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func               -4012	  0.098  update_curr+0x0 (update_cfs_shares+0xd0)
     #func               -4012	  0.091  update_min_vruntime+0x0 (update_curr+0x79)
     #func               -4012	  0.095  account_entity_dequeue+0x0 (update_cfs_shares+0x87)
     #func               -4012	  0.094  account_entity_enqueue+0x0 (update_cfs_shares+0xa4)
     #func               -4012	  0.122  update_curr+0x0 (task_tick_fair+0x2ab)
     #func               -4012	  0.118  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func               -4012	  0.176  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func               -4012	  0.087  trigger_load_balance+0x0 (scheduler_tick+0x185)
     #func               -4012	  0.104  run_posix_cpu_timers+0x0 (update_process_times+0x6e)
     #func               -4011	  0.091  profile_tick+0x0 (tick_sched_timer+0x49)
     #func               -4011	  0.090  hrtimer_forward+0x0 (tick_sched_timer+0x5b)
     #func               -4011	  0.092  _raw_spin_lock+0x0 (__run_hrtimer+0xa1)
     #func               -4011	  0.120  enqueue_hrtimer+0x0 (__run_hrtimer+0xbc)
     #func               -4011	  0.090  tick_program_event+0x0 (hrtimer_interrupt+0x136)
     #func               -4011	  0.090  clockevents_program_event+0x0 (tick_program_event+0x24)
     #func               -4011	  0.096  ktime_get+0x0 (clockevents_program_event+0x39)
     #func               -4011	  0.161  lapic_next_deadline+0x0 (clockevents_program_event+0x6b)
     #func               -4011	  0.102  irq_exit+0x0 (smp_apic_timer_interrupt+0x5a)
     #func               -4010	  0.112  do_softirq+0x0 (irq_exit+0x7d)
     #func               -4010	  0.089  __do_softirq+0x0 (call_softirq+0x1e)
     #func               -4010	  0.092  msecs_to_jiffies+0x0 (__do_softirq+0x20)
     #func               -4010	  0.088  ipipe_unstall_root+0x0 (__do_softirq+0xa8)
 |   #begin   0x80000000 -4010	  0.092  ipipe_unstall_root+0x1c (__do_softirq+0xa8)
 |   #func               -4010	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -4010	  0.090  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -4010	  0.096  run_timer_softirq+0x0 (__do_softirq+0xf7)
     +func               -4010	  0.096  hrtimer_run_pending+0x0 (run_timer_softirq+0x24)
     +func               -4010	  0.128  _raw_spin_lock_irq+0x0 (run_timer_softirq+0x3d)
     #func               -4009	  0.110  ipipe_unstall_root+0x0 (run_timer_softirq+0x18f)
 |   #begin   0x80000000 -4009	  0.091  ipipe_unstall_root+0x1c (run_timer_softirq+0x18f)
 |   #func               -4009	  0.142  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000 -4009	  0.090  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func               -4009	  0.102  rcu_bh_qs+0x0 (__do_softirq+0x11b)
     #func               -4009	  0.107  __local_bh_enable+0x0 (__do_softirq+0x17a)
     #func               -4009	  0.090  ipipe_restore_root+0x0 (do_softirq+0x8a)
     #func               -4009	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4009	  0.121  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4009	  0.104  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -4008	  0.121  rcu_irq_exit+0x0 (irq_exit+0x50)
     #func               -4008	  0.090  ipipe_restore_root+0x0 (rcu_irq_exit+0x8a)
     #func               -4008	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -4008	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -4008	  0.300  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   +end     0x000000ef -4008	  0.482  ipipe_trace_end+0x19 (apic_timer_interrupt+0x8f)
     +func               -4007	  0.107  xnpod_enable_timesource+0x0 [xeno_nucleus] (xnpod_init+0x3d5 [xeno_nucleus])
 |   +begin   0x80000000 -4007	  0.249  xnpod_enable_timesource+0x28 [xeno_nucleus] (xnpod_init+0x3d5 [xeno_nucleus])
 |  *+func               -4007	  0.715  xnintr_init+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x11b [xeno_nucleus])
 |  *+func               -4006	  0.112  __ipipe_restore_head+0x0 (xnpod_enable_timesource+0x16c [xeno_nucleus])
 |   +end     0x80000000 -4006	  0.088  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -4006	  0.102  do_gettimeofday+0x0 (xnpod_enable_timesource+0x175 [xeno_nucleus])
     +func               -4006	  0.087  getnstimeofday+0x0 (do_gettimeofday+0x1a)
     +func               -4006	  0.232  __getnstimeofday+0x0 (getnstimeofday+0xe)
     +func               -4006	  0.197  xnarch_tsc_to_ns+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x1a1 [xeno_nucleus])
     +func               -4005	  0.177  rthal_timer_request+0x0 (xnpod_enable_timesource+0x227 [xeno_nucleus])
     +func               -4005	  0.194  ipipe_timer_start+0x0 (rthal_timer_request+0x19)
     +func               -4005	  0.092  ipipe_critical_enter+0x0 (ipipe_timer_start+0x44)
 |   +begin   0x80000001 -4005	  0.142  ipipe_critical_enter+0x229 (ipipe_timer_start+0x44)
 |   +func               -4005	  0.101  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -4005	  3.056  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func               -4002	  0.120  ipipe_request_irq+0x0 (ipipe_timer_start+0x79)
 |   +func               -4001	  0.195  __ipipe_spin_lock_irqsave+0x0 (ipipe_request_irq+0x48)
 |   #func               -4001	  0.192  __ipipe_spin_unlock_irqrestore+0x0 (ipipe_request_irq+0x6e)
 |   +func               -4001	  1.108  ipipe_critical_exit+0x0 (ipipe_timer_start+0x9a)
 |   +end     0x80000001 -4000	  0.192  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func               -4000	  0.418  irq_to_desc+0x0 (ipipe_timer_start+0xa1)
     +func               -3999	  0.130  rthal_irq_request+0x0 (rthal_timer_request+0x97)
     +func               -3999	  0.123  ipipe_virtualize_irq+0x0 (rthal_irq_request+0x30)
     +func               -3999	  0.107  ipipe_request_irq+0x0 (ipipe_virtualize_irq+0x13)
     +func               -3999	  0.128  __ipipe_spin_lock_irqsave+0x0 (ipipe_request_irq+0x48)
 |   +begin   0x80000001 -3999	  0.224  __ipipe_spin_lock_irqsave+0x93 (ipipe_request_irq+0x48)
 |   #func               -3999	  0.131  __ipipe_spin_unlock_irqrestore+0x0 (ipipe_request_irq+0x6e)
 |   +end     0x80000001 -3998	  0.137  ipipe_trace_end+0x19 (__ipipe_spin_unlock_irqrestore+0x39)
 |   +begin   0x80000000 -3998	  0.263  xnpod_enable_timesource+0x244 [xeno_nucleus] (xnpod_init+0x3d5 [xeno_nucleus])
 |  *+func               -3998	  0.209  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x395 [xeno_nucleus])
 |  *+func               -3998	  0.240  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func               -3998	  0.201  xntimer_next_local_shot+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *+event   tick at -3997 -3997	  0.194  xntimer_next_local_shot+0x63 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *+func               -3997	  0.162  ipipe_timer_set+0x0 (xntimer_next_local_shot+0x6b [xeno_nucleus])
 |  *+func               -3997	  0.124  ipipe_raise_irq+0x0 (ipipe_timer_set+0x7f)
 |  *+func               -3997	  0.164  __ipipe_handle_irq+0x0 (ipipe_raise_irq+0x3b)
 |  *+func               -3997	  0.176  __ipipe_dispatch_irq+0x0 (__ipipe_handle_irq+0x8d)
 |  *+func               -3997	  0.262  __ipipe_set_irq_pending+0x0 (__ipipe_dispatch_irq+0x564)
 |  *+func               -3996	  0.150  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x329 [xeno_nucleus])
 |  *+func               -3996	  0.130  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func               -3996	  0.234  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x190 [xeno_nucleus])
 |  *+func               -3996	  0.177  __ipipe_restore_head+0x0 (xnpod_enable_timesource+0x378 [xeno_nucleus])
 |   +func               -3996	  0.200  __ipipe_do_sync_pipeline+0x0 (__ipipe_sync_pipeline+0x38)
 |  + func               -3995	  0.298  __ipipe_do_sync_stage+0x0 (__ipipe_do_sync_pipeline+0x97)
 |  # func               -3995	  0.344  xnintr_clock_handler+0x0 [xeno_nucleus] (__ipipe_do_sync_stage+0x103)
 |  # func               -3995	  0.227  xntimer_tick_aperiodic+0x0 [xeno_nucleus] (xnintr_clock_handler+0x142 [xeno_nucleus])
 |  # func               -3995	  0.131  xntimer_next_local_shot+0x0 [xeno_nucleus] (xntimer_tick_aperiodic+0x1b0 [xeno_nucleus])
 |  # event   tick at 996052-3994	  0.108  xntimer_next_local_shot+0x63 [xeno_nucleus] (xntimer_tick_aperiodic+0x1b0 [xeno_nucleus])
 |  # func               -3994	  0.116  ipipe_timer_set+0x0 (xntimer_next_local_shot+0x6b [xeno_nucleus])
 |  # func               -3994	  0.524  lapic_next_deadline+0x0 (ipipe_timer_set+0x6a)
 |  # func               -3994	  0.208  __xnpod_schedule+0x0 [xeno_nucleus] (xnintr_clock_handler+0x305 [xeno_nucleus])
 |  # [ 2027] -<?>-   -1 -3993	  0.181  __xnpod_schedule+0x168 [xeno_nucleus] (xnintr_clock_handler+0x305 [xeno_nucleus])
 |  # func               -3993	  0.098  ipipe_send_ipi+0x0 (__xnpod_schedule+0xab5 [xeno_nucleus])
 |  # func               -3993	  0.204  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |  # func               -3993	  0.316  xnsched_pick_next+0x0 [xeno_nucleus] (__xnpod_schedule+0x2e5 [xeno_nucleus])
 |  # func               -3993	  0.137  xnintr_host_tick+0x0 [xeno_nucleus] (__xnpod_schedule+0x937 [xeno_nucleus])
 |  # func               -3993	  0.307  __ipipe_set_irq_pending+0x0 (xnintr_host_tick+0x3a [xeno_nucleus])
 |   +func               -3992	  0.178  __ipipe_do_sync_stage+0x0 (__ipipe_do_sync_pipeline+0x115)
 |   #end     0x80000000 -3992	  0.121  ipipe_trace_end+0x19 (__ipipe_do_sync_stage+0xe8)
     #func               -3992	  0.091  __ipipe_do_IRQ+0x0 (__ipipe_do_sync_stage+0x1c8)
     #func               -3992	  0.098  __ipipe_get_ioapic_irq_vector+0x0 (__ipipe_do_IRQ+0x24)
     #func               -3992	  0.108  smp_apic_timer_interrupt+0x0 (__ipipe_do_IRQ+0x79)
     #func               -3992	  0.114  irq_enter+0x0 (smp_apic_timer_interrupt+0x2a)
     #func               -3992	  0.157  rcu_irq_enter+0x0 (irq_enter+0x17)
     #func               -3991	  0.097  ipipe_restore_root+0x0 (rcu_irq_enter+0x92)
     #func               -3991	  0.109  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -3991	  0.152  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -3991	  0.136  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func               -3991	  0.098  exit_idle+0x0 (smp_apic_timer_interrupt+0x2f)
     #func               -3991	  0.107  hrtimer_interrupt+0x0 (smp_apic_timer_interrupt+0x55)
     #func               -3991	  0.122  _raw_spin_lock+0x0 (hrtimer_interrupt+0x4f)
     #func               -3991	  0.169  ktime_get_update_offsets+0x0 (hrtimer_interrupt+0x81)
     #func               -3990	  0.107  tick_program_event+0x0 (hrtimer_interrupt+0x136)
     #func               -3990	  0.096  clockevents_program_event+0x0 (tick_program_event+0x24)
     #func               -3990	  0.216  ktime_get+0x0 (clockevents_program_event+0x39)
     #func               -3990	  0.123  xnarch_next_htick_shot+0x0 [xeno_nucleus] (clockevents_program_event+0x6b)
 |   #begin   0x80000000 -3990	  0.218  xnarch_next_htick_shot+0x2b [xeno_nucleus] (clockevents_program_event+0x6b)
 |  *#func               -3990	  1.936  __xnlock_spin+0x0 [xeno_nucleus] (xnarch_next_htick_shot+0x28d [xeno_nucleus])
 |  *#func               -3988	  0.120  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnarch_next_htick_shot+0xff [xeno_nucleus])
 |  *#func               -3988	  0.160  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *#func               -3987	  0.144  xntimer_next_local_shot+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *#event   tick at -56   -3987	  0.103  xntimer_next_local_shot+0x63 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *#func               -3987	  0.127  ipipe_timer_set+0x0 (xntimer_next_local_shot+0x6b [xeno_nucleus])
 |  *#func               -3987	  0.315  lapic_next_deadline+0x0 (ipipe_timer_set+0x6a)
 |  *#func               -3987	  0.131  __ipipe_restore_head+0x0 (xnarch_next_htick_shot+0x142 [xeno_nucleus])
 |   #end     0x80000000 -3987	  0.158  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     #func               -3986	  0.162  irq_exit+0x0 (smp_apic_timer_interrupt+0x5a)
     #func               -3986	  0.149  rcu_irq_exit+0x0 (irq_exit+0x50)
     #func               -3986	  0.116  ipipe_restore_root+0x0 (rcu_irq_exit+0x8a)
     #func               -3986	  0.109  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001 -3986	  0.143  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001 -3986	  0.258  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   +end     0x80000000 -3985	  0.188  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func               -3985	  0.118  rthal_timer_request+0x0 (xnpod_enable_timesource+0x227 [xeno_nucleus])
     +func               -3985	  0.242  ipipe_timer_start+0x0 (rthal_timer_request+0x19)
     +func               -3985	  0.109  ipipe_critical_enter+0x0 (ipipe_timer_start+0x44)
 |   +begin   0x80000001 -3985	  0.164  ipipe_critical_enter+0x229 (ipipe_timer_start+0x44)
 |   +func               -3985	  0.121  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func               -3985	3935.843  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func                 -49	  0.982  ipipe_critical_exit+0x0 (ipipe_timer_start+0x9a)
 |   +end     0x80000001   -48	 22.585  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
 |   +func                 -25	  0.211  __ipipe_handle_irq+0x0 (apic_timer_interrupt+0x7c)
 |   +func                 -25	  0.128  __ipipe_dispatch_irq+0x0 (__ipipe_handle_irq+0x8d)
 |   +func                 -25	  0.136  __ipipe_ack_hrtimer_irq+0x0 (__ipipe_dispatch_irq+0x357)
 |   +func                 -25	  0.209  lapic_itimer_ack+0x0 (__ipipe_ack_hrtimer_irq+0x4b)
 |  # func                 -24	  0.220  xnintr_clock_handler+0x0 [xeno_nucleus] (__ipipe_dispatch_irq+0x14c)
 |  # func                 -24	  0.120  xntimer_tick_aperiodic+0x0 [xeno_nucleus] (xnintr_clock_handler+0x142 [xeno_nucleus])
 |  # func                 -24	  0.104  xntimer_next_local_shot+0x0 [xeno_nucleus] (xntimer_tick_aperiodic+0x1b0 [xeno_nucleus])
 |  # event   tick at 996052  -24	  0.088  xntimer_next_local_shot+0x63 [xeno_nucleus] (xntimer_tick_aperiodic+0x1b0 [xeno_nucleus])
 |  # func                 -24	  0.107  ipipe_timer_set+0x0 (xntimer_next_local_shot+0x6b [xeno_nucleus])
 |  # func                 -24	  0.282  lapic_next_deadline+0x0 (ipipe_timer_set+0x6a)
 |  # func                 -24	  0.183  __ipipe_set_irq_pending+0x0 (xnintr_clock_handler+0x274 [xeno_nucleus])
 |   +func                 -23	  0.154  __ipipe_do_sync_pipeline+0x0 (__ipipe_dispatch_irq+0x1f2)
 |   +func                 -23	  0.129  __ipipe_do_sync_stage+0x0 (__ipipe_do_sync_pipeline+0x115)
 |   #end     0x80000000   -23	  0.104  ipipe_trace_end+0x19 (__ipipe_do_sync_stage+0xe8)
     #func                 -23	  0.088  __ipipe_do_IRQ+0x0 (__ipipe_do_sync_stage+0x1c8)
     #func                 -23	  0.091  __ipipe_get_ioapic_irq_vector+0x0 (__ipipe_do_IRQ+0x24)
     #func                 -23	  0.085  smp_apic_timer_interrupt+0x0 (__ipipe_do_IRQ+0x79)
     #func                 -23	  0.087  irq_enter+0x0 (smp_apic_timer_interrupt+0x2a)
     #func                 -23	  0.109  rcu_irq_enter+0x0 (irq_enter+0x17)
     #func                 -22	  0.087  ipipe_restore_root+0x0 (rcu_irq_enter+0x92)
     #func                 -22	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001   -22	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001   -22	  0.129  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                 -22	  0.096  exit_idle+0x0 (smp_apic_timer_interrupt+0x2f)
     #func                 -22	  0.089  hrtimer_interrupt+0x0 (smp_apic_timer_interrupt+0x55)
     #func                 -22	  0.092  _raw_spin_lock+0x0 (hrtimer_interrupt+0x4f)
     #func                 -22	  0.144  ktime_get_update_offsets+0x0 (hrtimer_interrupt+0x81)
     #func                 -22	  0.101  __run_hrtimer+0x0 (hrtimer_interrupt+0xf7)
     #func                 -22	  0.117  __remove_hrtimer+0x0 (__run_hrtimer+0x67)
     #func                 -21	  0.091  tick_sched_timer+0x0 (__run_hrtimer+0x91)
     #func                 -21	  0.117  ktime_get+0x0 (tick_sched_timer+0x1f)
     #func                 -21	  0.094  _raw_spin_lock+0x0 (tick_sched_timer+0x8f)
     #func                 -21	  0.101  do_timer+0x0 (tick_sched_timer+0xcb)
     #func                 -21	  0.144  _raw_spin_lock_irqsave+0x0 (do_timer+0x2c)
     #func                 -21	  0.095  ntp_tick_length+0x0 (do_timer+0x83)
     #func                 -21	  0.122  ntp_tick_length+0x0 (do_timer+0x2ec)
     #func                 -21	  0.090  timekeeping_update.constprop.8+0x0 (do_timer+0x1e1)
     #func                 -21	  0.092  update_vsyscall+0x0 (timekeeping_update.constprop.8+0x1d)
     #func                 -20	  0.103  set_normalized_timespec+0x0 (update_vsyscall+0xf7)
     #func                 -20	  0.089  ipipe_update_hostrt+0x0 (update_vsyscall+0x12c)
     #func                 -20	  0.087  ipipe_root_only+0x0 (ipipe_update_hostrt+0x28)
 |   #begin   0x80000001   -20	  0.120  ipipe_root_only+0xa3 (ipipe_update_hostrt+0x28)
 |   #end     0x80000001   -20	  0.096  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                 -20	  0.094  __ipipe_notify_kevent+0x0 (ipipe_update_hostrt+0x7d)
     #func                 -20	  0.087  ipipe_root_only+0x0 (__ipipe_notify_kevent+0x21)
 |   #begin   0x80000001   -20	  0.118  ipipe_root_only+0xa3 (__ipipe_notify_kevent+0x21)
 |   #end     0x80000001   -20	  0.097  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   #begin   0x80000001   -20	  0.103  __ipipe_notify_kevent+0xcb (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001   -19	  0.092  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xf2)
     #func                 -19	  0.107  ipipe_kevent_hook+0x0 (__ipipe_notify_kevent+0x81)
     #func                 -19	  0.084  hostrt_event+0x0 [xeno_nucleus] (ipipe_kevent_hook+0x1f)
     #func                 -19	  0.088  __ipipe_spin_lock_irqsave+0x0 (hostrt_event+0x19 [xeno_nucleus])
 |   #begin   0x80000001   -19	  0.147  __ipipe_spin_lock_irqsave+0x93 (hostrt_event+0x19 [xeno_nucleus])
 |   #func                 -19	  0.094  __ipipe_spin_unlock_irqrestore+0x0 (hostrt_event+0x87 [xeno_nucleus])
 |   #end     0x80000001   -19	  0.095  ipipe_trace_end+0x19 (__ipipe_spin_unlock_irqrestore+0x39)
 |   #begin   0x80000001   -19	  0.090  __ipipe_notify_kevent+0xde (ipipe_update_hostrt+0x7d)
 |   #end     0x80000001   -19	  0.095  ipipe_trace_end+0x19 (__ipipe_notify_kevent+0xaa)
     #func                 -19	  0.088  raw_notifier_call_chain+0x0 (timekeeping_update.constprop.8+0x32)
     #func                 -18	  0.089  notifier_call_chain+0x0 (raw_notifier_call_chain+0x16)
     #func                 -18	  0.085  __ipipe_spin_unlock_debug+0x0 (do_timer+0x1f5)
     #func                 -18	  0.087  _raw_spin_unlock_irqrestore+0x0 (do_timer+0x204)
     #func                 -18	  0.085  ipipe_restore_root+0x0 (_raw_spin_unlock_irqrestore+0x2a)
     #func                 -18	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001   -18	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001   -18	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                 -18	  0.092  calc_global_load+0x0 (do_timer+0x20c)
     #func                 -18	  0.087  update_root_process_times+0x0 (tick_sched_timer+0x3f)
     #func                 -18	  0.087  update_process_times+0x0 (update_root_process_times+0x57)
     #func                 -18	  0.101  account_process_tick+0x0 (update_process_times+0x2d)
     #func                 -17	  0.102  account_system_time+0x0 (account_process_tick+0x3d)
     #func                 -17	  0.100  cpuacct_account_field+0x0 (account_system_time+0xc6)
     #func                 -17	  0.084  acct_account_cputime+0x0 (account_system_time+0xce)
     #func                 -17	  0.109  __acct_update_integrals+0x0 (acct_account_cputime+0x1c)
     #func                 -17	  0.100  jiffies_to_timeval+0x0 (__acct_update_integrals+0x73)
     #func                 -17	  0.085  ipipe_restore_root+0x0 (__acct_update_integrals+0x93)
     #func                 -17	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001   -17	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001   -17	  0.107  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                 -17	  0.094  hrtimer_run_queues+0x0 (update_process_times+0x32)
     #func                 -16	  0.109  raise_softirq+0x0 (update_process_times+0x3c)
     #func                 -16	  0.087  ipipe_restore_root+0x0 (raise_softirq+0xda)
     #func                 -16	  0.087  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001   -16	  0.120  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001   -16	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                 -16	  0.111  rcu_check_callbacks+0x0 (update_process_times+0x47)
     #func                 -16	  0.125  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func                 -16	  0.100  cpu_needs_another_gp+0x0 (rcu_check_callbacks+0x21b)
     #func                 -16	  0.088  scheduler_tick+0x0 (update_process_times+0x66)
     #func                 -16	  0.117  _raw_spin_lock+0x0 (scheduler_tick+0x44)
     #func                 -15	  0.161  update_rq_clock.part.71+0x0 (scheduler_tick+0x1b8)
     #func                 -15	  0.090  task_tick_fair+0x0 (scheduler_tick+0x151)
     #func                 -15	  0.136  update_curr+0x0 (task_tick_fair+0x2ab)
     #func                 -15	  0.089  update_min_vruntime+0x0 (update_curr+0x79)
     #func                 -15	  0.121  cpuacct_charge+0x0 (update_curr+0x9f)
     #func                 -15	  0.127  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func                 -15	  0.111  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func                 -15	  0.098  update_curr+0x0 (update_cfs_shares+0xd0)
     #func                 -14	  0.088  update_min_vruntime+0x0 (update_curr+0x79)
     #func                 -14	  0.094  account_entity_dequeue+0x0 (update_cfs_shares+0x87)
     #func                 -14	  0.097  account_entity_enqueue+0x0 (update_cfs_shares+0xa4)
     #func                 -14	  0.120  update_curr+0x0 (task_tick_fair+0x2ab)
     #func                 -14	  0.125  update_cfs_rq_blocked_load+0x0 (task_tick_fair+0x212)
     #func                 -14	  0.187  update_cfs_shares+0x0 (task_tick_fair+0x21a)
     #func                 -14	  0.087  trigger_load_balance+0x0 (scheduler_tick+0x185)
     #func                 -14	  0.110  run_posix_cpu_timers+0x0 (update_process_times+0x6e)
     #func                 -14	  0.097  profile_tick+0x0 (tick_sched_timer+0x49)
     #func                 -13	  0.089  hrtimer_forward+0x0 (tick_sched_timer+0x5b)
     #func                 -13	  0.092  _raw_spin_lock+0x0 (__run_hrtimer+0xa1)
     #func                 -13	  0.104  enqueue_hrtimer+0x0 (__run_hrtimer+0xbc)
     #func                 -13	  0.087  tick_program_event+0x0 (hrtimer_interrupt+0x136)
     #func                 -13	  0.088  clockevents_program_event+0x0 (tick_program_event+0x24)
     #func                 -13	  0.108  ktime_get+0x0 (clockevents_program_event+0x39)
     #func                 -13	  0.095  xnarch_next_htick_shot+0x0 [xeno_nucleus] (clockevents_program_event+0x6b)
 |   #begin   0x80000000   -13	  0.131  xnarch_next_htick_shot+0x2b [xeno_nucleus] (clockevents_program_event+0x6b)
 |  *#func                 -13	  0.100  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnarch_next_htick_shot+0xff [xeno_nucleus])
 |  *#func                 -13	  0.140  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *#func                 -12	  0.111  xntimer_next_local_shot+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *#event   tick at 3939    -12	  0.109  xntimer_next_local_shot+0x63 [xeno_nucleus] (xntimer_start_aperiodic+0x225 [xeno_nucleus])
 |  *#func                 -12	  0.098  ipipe_timer_set+0x0 (xntimer_next_local_shot+0x6b [xeno_nucleus])
 |  *#func                 -12	  0.198  lapic_next_deadline+0x0 (ipipe_timer_set+0x6a)
 |  *#func                 -12	  0.101  __ipipe_restore_head+0x0 (xnarch_next_htick_shot+0x142 [xeno_nucleus])
 |   #end     0x80000000   -12	  0.102  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     #func                 -12	  0.118  irq_exit+0x0 (smp_apic_timer_interrupt+0x5a)
     #func                 -12	  0.134  do_softirq+0x0 (irq_exit+0x7d)
     #func                 -11	  0.097  __do_softirq+0x0 (call_softirq+0x1e)
     #func                 -11	  0.100  msecs_to_jiffies+0x0 (__do_softirq+0x20)
     #func                 -11	  0.095  ipipe_unstall_root+0x0 (__do_softirq+0xa8)
 |   #begin   0x80000000   -11	  0.091  ipipe_unstall_root+0x1c (__do_softirq+0xa8)
 |   #func                 -11	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000   -11	  0.097  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func                 -11	  0.089  run_timer_softirq+0x0 (__do_softirq+0xf7)
     +func                 -11	  0.096  hrtimer_run_pending+0x0 (run_timer_softirq+0x24)
     +func                 -11	  0.136  _raw_spin_lock_irq+0x0 (run_timer_softirq+0x3d)
     #func                 -11	  0.089  ipipe_unstall_root+0x0 (run_timer_softirq+0x18f)
 |   #begin   0x80000000   -10	  0.091  ipipe_unstall_root+0x1c (run_timer_softirq+0x18f)
 |   #func                 -10	  0.140  ipipe_root_only+0x0 (ipipe_unstall_root+0x21)
 |   +end     0x80000000   -10	  0.090  ipipe_trace_end+0x19 (ipipe_unstall_root+0x59)
     +func                 -10	  0.101  rcu_bh_qs+0x0 (__do_softirq+0x11b)
     #func                 -10	  0.105  __local_bh_enable+0x0 (__do_softirq+0x17a)
     #func                 -10	  0.090  ipipe_restore_root+0x0 (do_softirq+0x8a)
     #func                 -10	  0.089  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001   -10	  0.117  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001   -10	  0.105  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
     #func                  -9	  0.107  rcu_irq_exit+0x0 (irq_exit+0x50)
     #func                  -9	  0.087  ipipe_restore_root+0x0 (rcu_irq_exit+0x8a)
     #func                  -9	  0.088  ipipe_root_only+0x0 (ipipe_restore_root+0x12)
 |   #begin   0x80000001    -9	  0.118  ipipe_root_only+0xa3 (ipipe_restore_root+0x12)
 |   #end     0x80000001    -9	  0.291  ipipe_trace_end+0x19 (ipipe_root_only+0x86)
 |   +end     0x000000ef    -9	  0.210  ipipe_trace_end+0x19 (apic_timer_interrupt+0x8f)
     +func                  -9	  0.151  irq_to_desc+0x0 (ipipe_timer_start+0xa1)
 |   +begin   0x80000000    -8	  0.142  xnpod_enable_timesource+0x244 [xeno_nucleus] (xnpod_init+0x3d5 [xeno_nucleus])
 |  *+func                  -8	  0.108  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x395 [xeno_nucleus])
 |  *+func                  -8	  0.177  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func                  -8	  0.107  ipipe_send_ipi+0x0 (xntimer_start_aperiodic+0x211 [xeno_nucleus])
 |  *+func                  -8	  0.155  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |  *+func                  -8	  0.107  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x329 [xeno_nucleus])
 |  *+func                  -8	  0.105  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func                  -8	  0.181  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x190 [xeno_nucleus])
 |  *+func                  -7	  0.104  __ipipe_restore_head+0x0 (xnpod_enable_timesource+0x378 [xeno_nucleus])
 |   +end     0x80000000    -7	  0.105  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func                  -7	  0.098  rthal_timer_request+0x0 (xnpod_enable_timesource+0x227 [xeno_nucleus])
     +func                  -7	  0.196  ipipe_timer_start+0x0 (rthal_timer_request+0x19)
     +func                  -7	  0.091  ipipe_critical_enter+0x0 (ipipe_timer_start+0x44)
 |   +begin   0x80000001    -7	  0.143  ipipe_critical_enter+0x229 (ipipe_timer_start+0x44)
 |   +func                  -7	  0.097  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
 |   +func                  -7	  3.857  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |   +func                  -3	  0.998  ipipe_critical_exit+0x0 (ipipe_timer_start+0x9a)
 |   +end     0x80000001    -2	  0.116  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
     +func                  -2	  0.122  irq_to_desc+0x0 (ipipe_timer_start+0xa1)
 |   +begin   0x80000000    -1	  0.208  xnpod_enable_timesource+0x244 [xeno_nucleus] (xnpod_init+0x3d5 [xeno_nucleus])
 |  *+func                  -1	  0.122  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x395 [xeno_nucleus])
 |  *+func                  -1	  0.171  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func                  -1	  0.123  ipipe_send_ipi+0x0 (xntimer_start_aperiodic+0x211 [xeno_nucleus])
 |  *+func                  -1	  0.168  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
 |  *+func                  -1	  0.116  xntimer_start_aperiodic+0x0 [xeno_nucleus] (xnpod_enable_timesource+0x329 [xeno_nucleus])
 |  *+func                   0	  0.118  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x179 [xeno_nucleus])
 |  *+func                   0	  0.201  xnarch_ns_to_tsc+0x0 [xeno_nucleus] (xntimer_start_aperiodic+0x190 [xeno_nucleus])
 |  *+func                   0	  0.130  __ipipe_restore_head+0x0 (xnpod_enable_timesource+0x378 [xeno_nucleus])
 |   +end     0x80000000     0	  0.130  ipipe_trace_end+0x19 (__ipipe_restore_head+0x6c)
     +func                   0	  0.109  rthal_timer_request+0x0 (xnpod_enable_timesource+0x227 [xeno_nucleus])
     +func                   0	  0.191  ipipe_timer_start+0x0 (rthal_timer_request+0x19)
     +func                   0	  0.115  ipipe_critical_enter+0x0 (ipipe_timer_start+0x44)
>|   +begin   0x80000001     0	  0.160  ipipe_critical_enter+0x229 (ipipe_timer_start+0x44)
:|   +func                   0	  0.127  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
:|   +func                   0! 19678406.428  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
:|   +func               19678406	  0.824  ipipe_send_ipi+0x0 (ipipe_critical_enter+0x1da)
:|   +func               19678407+   3.476  flat_send_IPI_mask+0x0 (ipipe_send_ipi+0x56)
:|   +func               19678411+   1.008  ipipe_critical_exit+0x0 (ipipe_timer_start+0x9a)
<|   +end     0x80000001 19678412	  0.490  ipipe_trace_end+0x19 (ipipe_critical_exit+0x8a)
 |   +begin   0x000000ef 19678412	  0.000  apic_timer_interrupt+0x6d (ipipe_critical_exit+0x76)


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