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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 19:05:45 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-08 16:08:45 +0400 |
| commit | 96c951179736eb59c5f66de2ac85af9e7a6a8b15 (patch) | |
| tree | 0ee038698189d943bf43d889e8eb8c769c4ee967 /arch/powerpc | |
| parent | 3194f61de93d4d4fbc2f2ddb25aeded6f9cebaeb (diff) | |
| download | linux-96c951179736eb59c5f66de2ac85af9e7a6a8b15.tar.xz | |
powerpc: Use common threadinfo allocator
The core now has a threadinfo allocator which uses a kmemcache when
THREAD_SIZE < PAGE_SIZE.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Link: http://lkml.kernel.org/r/20120505150142.059161130@linutronix.de
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/thread_info.h | 13 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 31 |
2 files changed, 0 insertions, 44 deletions
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 4a741c7efd02..1a1bb00f061a 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -62,21 +62,8 @@ struct thread_info { #define init_thread_info (init_thread_union.thread_info) #define init_stack (init_thread_union.stack) -/* thread information allocation */ - -#if THREAD_SHIFT >= PAGE_SHIFT - #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -#else /* THREAD_SHIFT < PAGE_SHIFT */ - -#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR - -extern struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node); -extern void free_thread_info(struct thread_info *ti); - -#endif /* THREAD_SHIFT < PAGE_SHIFT */ - /* how to get the thread information struct from C */ static inline struct thread_info *current_thread_info(void) { diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 4937c9690090..aa05935b6947 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1252,37 +1252,6 @@ void __ppc64_runlatch_off(void) } #endif /* CONFIG_PPC64 */ -#if THREAD_SHIFT < PAGE_SHIFT - -static struct kmem_cache *thread_info_cache; - -struct thread_info *alloc_thread_info_node(struct task_struct *tsk, int node) -{ - struct thread_info *ti; - - ti = kmem_cache_alloc_node(thread_info_cache, GFP_KERNEL, node); - if (unlikely(ti == NULL)) - return NULL; -#ifdef CONFIG_DEBUG_STACK_USAGE - memset(ti, 0, THREAD_SIZE); -#endif - return ti; -} - -void free_thread_info(struct thread_info *ti) -{ - kmem_cache_free(thread_info_cache, ti); -} - -void thread_info_cache_init(void) -{ - thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE, - THREAD_SIZE, 0, NULL); - BUG_ON(thread_info_cache == NULL); -} - -#endif /* THREAD_SHIFT < PAGE_SHIFT */ - unsigned long arch_align_stack(unsigned long sp) { if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space) |