Suresh Siddha | 61c4628 | 2008-03-10 15:28:04 -0700 | [diff] [blame^] | 1 | #include <linux/errno.h> |
| 2 | #include <linux/kernel.h> |
| 3 | #include <linux/mm.h> |
| 4 | #include <linux/smp.h> |
| 5 | #include <linux/slab.h> |
| 6 | #include <linux/sched.h> |
| 7 | |
| 8 | static struct kmem_cache *task_xstate_cachep; |
| 9 | |
| 10 | int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src) |
| 11 | { |
| 12 | *dst = *src; |
| 13 | dst->thread.xstate = kmem_cache_alloc(task_xstate_cachep, GFP_KERNEL); |
| 14 | if (!dst->thread.xstate) |
| 15 | return -ENOMEM; |
| 16 | WARN_ON((unsigned long)dst->thread.xstate & 15); |
| 17 | memcpy(dst->thread.xstate, src->thread.xstate, xstate_size); |
| 18 | return 0; |
| 19 | } |
| 20 | |
| 21 | void free_thread_info(struct thread_info *ti) |
| 22 | { |
| 23 | kmem_cache_free(task_xstate_cachep, ti->task->thread.xstate); |
| 24 | ti->task->thread.xstate = NULL; |
| 25 | |
| 26 | free_pages((unsigned long)(ti), get_order(THREAD_SIZE)); |
| 27 | } |
| 28 | |
| 29 | void arch_task_cache_init(void) |
| 30 | { |
| 31 | task_xstate_cachep = |
| 32 | kmem_cache_create("task_xstate", xstate_size, |
| 33 | __alignof__(union thread_xstate), |
| 34 | SLAB_PANIC, NULL); |
| 35 | } |