[Xenomai] [PATCH] cobalt: increase default system heap size

Dmitriy Cherkasov dmitriy at mperpetuo.com
Tue Dec 1 20:29:05 CET 2015


On arm64, running the included switchtest program hits the default 
system heap limit of 256k.

The program creates 97 threads, each allocating space on the system heap 
for struct cobalt_thread (3616 bytes on arm64). This adds up to a total 
of 350725 bytes required.

This patch increases the default system heap size to 512k.

---
  kernel/cobalt/Kconfig | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/cobalt/Kconfig b/kernel/cobalt/Kconfig
index afa62d2..24f09e8 100644
--- a/kernel/cobalt/Kconfig
+++ b/kernel/cobalt/Kconfig
@@ -257,7 +257,7 @@ config XENO_OPT_REGISTRY_NRSLOTS

  config XENO_OPT_SYS_HEAPSZ
         int "Size of system heap (Kb)"
-       default 256
+       default 512
         help
         The system heap is used for various internal allocations by
         the Cobalt kernel. The size is expressed in Kilobytes.
-- 
1.9.1




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