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| author | Eric Sandeen <sandeen@sgi.com> | 2006-06-26 14:00:08 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 10:48:22 -0700 |
| commit | 8501a2fbe762b21d2504ed3aca3b52be61b5e6e4 (patch) | |
| tree | 899bf4085bb29927a71dd90b3ed1fb444ed4b0ea /include | |
| parent | 4961f10e2205d0ededa291e12ec634efc58aa93c (diff) | |
| download | op-kernel-dev-8501a2fbe762b21d2504ed3aca3b52be61b5e6e4.zip op-kernel-dev-8501a2fbe762b21d2504ed3aca3b52be61b5e6e4.tar.gz | |
[PATCH] x86_64: x86_64 stack usage debugging
Applies to git & 2.6.17-rc6 after CONFIG_DEBUG_STACKOVERFLOW patch
uses same stack-zeroing mechanism as on i386 to discover maximum stack
excursions.
Signed-off-by: Eric Sandeen <sandeen@sgi.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-x86_64/thread_info.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-x86_64/thread_info.h b/include/asm-x86_64/thread_info.h index b5e8821..2029b00 100644 --- a/include/asm-x86_64/thread_info.h +++ b/include/asm-x86_64/thread_info.h @@ -73,8 +73,21 @@ static inline struct thread_info *stack_thread_info(void) } /* thread information allocation */ +#ifdef CONFIG_DEBUG_STACK_USAGE +#define alloc_thread_info(tsk) \ + ({ \ + struct thread_info *ret; \ + \ + ret = ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER)); \ + if (ret) \ + memset(ret, 0, THREAD_SIZE); \ + ret; \ + }) +#else #define alloc_thread_info(tsk) \ ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER)) +#endif + #define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER) #else /* !__ASSEMBLY__ */ |
