From 6ea8bad1c06c8ccde381f1c848afe6a245bb33b5 Mon Sep 17 00:00:00 2001 From: "clameter@sgi.com" Date: Wed, 30 Jan 2008 13:30:32 +0100 Subject: [PATCH] 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 Cc: Andi Kleen Cc: Mike Travis Signed-off-by: Andrew Morton Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/thread_info_64.h | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/include/asm-x86/thread_info_64.h b/include/asm-x86/thread_info_64.h index 7f6ee68..1ac23c1 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__ */ -- 2.7.4