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| author | clameter@sgi.com <clameter@sgi.com> | 2008-01-30 13:30:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:32 +0100 |
| commit | 6ea8bad1c06c8ccde381f1c848afe6a245bb33b5 (patch) | |
| tree | 41fd63390baf34cef3ce4ca16b525cef879c6079 | |
| parent | ec12fa5c80126b252ebcb474d12c832ec4647daa (diff) | |
| download | blackbird-op-linux-6ea8bad1c06c8ccde381f1c848afe6a245bb33b5.tar.gz blackbird-op-linux-6ea8bad1c06c8ccde381f1c848afe6a245bb33b5.zip | |
x86: clean up stack allocation and free
Clean up the allocation and freeing of stacks a bit by using a __GFP_ZERO flag
instead of memset.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/asm-x86/thread_info_64.h | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/include/asm-x86/thread_info_64.h b/include/asm-x86/thread_info_64.h index 7f6ee68f0002..1ac23c157231 100644 --- a/include/asm-x86/thread_info_64.h +++ b/include/asm-x86/thread_info_64.h @@ -74,20 +74,14 @@ 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; \ - }) +#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO) #else -#define alloc_thread_info(tsk) \ - ((struct thread_info *) __get_free_pages(GFP_KERNEL,THREAD_ORDER)) +#define THREAD_FLAGS GFP_KERNEL #endif +#define alloc_thread_info(tsk) \ + ((struct thread_info *) __get_free_pages(THREAD_FLAGS, THREAD_ORDER)) + #define free_thread_info(ti) free_pages((unsigned long) (ti), THREAD_ORDER) #else /* !__ASSEMBLY__ */ |
