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| author | Thomas Gleixner <tglx@linutronix.de> | 2012-05-05 15:05:44 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-05-08 14:08:45 +0200 |
| commit | fe844052bca4355bf1a1b078d3e7727800cf3c73 (patch) | |
| tree | 27413492b9573f40a1d978741273667a70b90de8 /arch/hexagon | |
| parent | e6e9c540d5d177e7a40d8b40a3b2386bdefbe5da (diff) | |
| download | lwn-fe844052bca4355bf1a1b078d3e7727800cf3c73.tar.gz lwn-fe844052bca4355bf1a1b078d3e7727800cf3c73.zip | |
hexagon: 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: Richard Kuo <rkuo@codeaurora.org>
Link: http://lkml.kernel.org/r/20120505150141.812612113@linutronix.de
Diffstat (limited to 'arch/hexagon')
| -rw-r--r-- | arch/hexagon/include/asm/thread_info.h | 8 | ||||
| -rw-r--r-- | arch/hexagon/kernel/process.c | 37 |
2 files changed, 0 insertions, 45 deletions
diff --git a/arch/hexagon/include/asm/thread_info.h b/arch/hexagon/include/asm/thread_info.h index 9c2934ff5756..4f936a7ee847 100644 --- a/arch/hexagon/include/asm/thread_info.h +++ b/arch/hexagon/include/asm/thread_info.h @@ -31,15 +31,7 @@ #define THREAD_SHIFT 12 #define THREAD_SIZE (1<<THREAD_SHIFT) - -#if THREAD_SHIFT >= PAGE_SHIFT #define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT) -#else /* don't use standard allocator */ -#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 - #ifndef __ASSEMBLY__ diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c index ff02821bfb7e..af51de63b835 100644 --- a/arch/hexagon/kernel/process.c +++ b/arch/hexagon/kernel/process.c @@ -234,43 +234,6 @@ unsigned long get_wchan(struct task_struct *p) } /* - * Borrowed from PowerPC -- basically allow smaller kernel stacks if we - * go crazy with the page sizes. - */ -#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); -} - -/* Weak symbol; called by init/main.c */ - -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 */ - -/* * Required placeholder. */ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu) |