* [S390] Don't use small stacks when lockdep is used.
@ 2006-12-04 14:57 Martin Schwidefsky
0 siblings, 0 replies; only message in thread
From: Martin Schwidefsky @ 2006-12-04 14:57 UTC (permalink / raw)
To: linux-kernel, heiko.carstens
From: Heiko Carstens <heiko.carstens@de.ibm.com>
[S390] Don't use small stacks when lockdep is used.
The lock dependency validator adds a bunch of extra stack frames to
the stack, which can cause stack overflows. Especially seen on 31 bit
where the small stack is only 4k.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
arch/s390/Kconfig | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -urpN linux-2.6/arch/s390/Kconfig linux-2.6-patched/arch/s390/Kconfig
--- linux-2.6/arch/s390/Kconfig 2006-12-04 14:50:32.000000000 +0100
+++ linux-2.6-patched/arch/s390/Kconfig 2006-12-04 14:51:07.000000000 +0100
@@ -178,7 +178,7 @@ config PACK_STACK
config SMALL_STACK
bool "Use 4kb/8kb for kernel stack instead of 8kb/16kb"
- depends on PACK_STACK
+ depends on PACK_STACK && !LOCKDEP
help
If you say Y here and the compiler supports the -mkernel-backchain
option the kernel will use a smaller kernel stack size. For 31 bit
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