Commit | Line | Data |
---|---|---|
61c4628b SS |
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 | } |