diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 14 | ||||
| -rw-r--r-- | arch/s390/include/asm/thread_info.h | 5 |
2 files changed, 6 insertions, 13 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 5f5c29269fb..8116a3328a1 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -241,19 +241,17 @@ config PACK_STACK Say Y if you are unsure. config SMALL_STACK - bool "Use 4kb/8kb for kernel stack instead of 8kb/16kb" - depends on PACK_STACK && !LOCKDEP + bool "Use 8kb for kernel stack instead of 16kb" + depends on PACK_STACK && 64BIT && !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 - the reduced size is 4kb instead of 8kb and for 64 bit it is 8kb - instead of 16kb. This allows to run more thread on a system and - reduces the pressure on the memory management for higher order - page allocations. + option the kernel will use a smaller kernel stack size. The reduced + size is 8kb instead of 16kb. This allows to run more threads on a + system and reduces the pressure on the memory management for higher + order page allocations. Say N if you are unsure. - config CHECK_STACK bool "Detect kernel stack overflow" help diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index de3fad60c68..c1eaf9604da 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -15,13 +15,8 @@ * Size of kernel stack for each process */ #ifndef __s390x__ -#ifndef __SMALL_STACK #define THREAD_ORDER 1 #define ASYNC_ORDER 1 -#else -#define THREAD_ORDER 0 -#define ASYNC_ORDER 0 -#endif #else /* __s390x__ */ #ifndef __SMALL_STACK #define THREAD_ORDER 2 |