diff options
Diffstat (limited to 'arch/sh/mm/init.c')
-rw-r--r-- | arch/sh/mm/init.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 31211bfdc6d8..2a53943924b2 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -265,6 +265,35 @@ void free_initrd_mem(unsigned long start, unsigned long end) } #endif +#if THREAD_SHIFT < PAGE_SHIFT +static struct kmem_cache *thread_info_cache; + +struct thread_info *alloc_thread_info(struct task_struct *tsk) +{ + struct thread_info *ti; + + ti = kmem_cache_alloc(thread_info_cache, GFP_KERNEL); + 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 */ + #ifdef CONFIG_MEMORY_HOTPLUG int arch_add_memory(int nid, u64 start, u64 size) { |