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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 19:05:41 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-08 15:55:20 +0400 |
| commit | 2889f60814e15dea644782597d897cdba943564f (patch) | |
| tree | 0dab94d2c8136dc86241a7e85e5c881b03677c92 | |
| parent | 6c0a9fa62feb7e9fdefa9720bcc03040c9b0b311 (diff) | |
| download | linux-2889f60814e15dea644782597d897cdba943564f.tar.xz | |
fork: Move thread info gfp flags to header
These flags can be useful for extra allocations outside of the core
code.
Add __GFP_NOTRACK to them, so the archs which have kmemcheck do
not have to provide extra allocators just for that reason.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20120505150141.428211694@linutronix.de
| -rw-r--r-- | include/linux/thread_info.h | 6 | ||||
| -rw-r--r-- | kernel/fork.c | 8 |
2 files changed, 8 insertions, 6 deletions
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h index 8d03f079688c..db78775eff3b 100644 --- a/include/linux/thread_info.h +++ b/include/linux/thread_info.h @@ -54,6 +54,12 @@ extern long do_no_restart_syscall(struct restart_block *parm); #ifdef __KERNEL__ +#ifdef CONFIG_DEBUG_STACK_USAGE +# define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO) +#else +# define THREADINFO_GFP (GFP_KERNEL | __GFP_NOTRACK) +#endif + /* * flag set/clear/test wrappers * - pass TIF_xxxx constants to these functions diff --git a/kernel/fork.c b/kernel/fork.c index a79b36e2e912..5d22b9b8cf7b 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -123,12 +123,8 @@ static struct kmem_cache *task_struct_cachep; static struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node) { -#ifdef CONFIG_DEBUG_STACK_USAGE - gfp_t mask = GFP_KERNEL | __GFP_ZERO; -#else - gfp_t mask = GFP_KERNEL; -#endif - struct page *page = alloc_pages_node(node, mask, THREAD_SIZE_ORDER); + struct page *page = alloc_pages_node(node, THREADINFO_GFP, + THREAD_SIZE_ORDER); return page ? page_address(page) : NULL; } |