1 #include <linux/errno.h>
2 #include <linux/kernel.h>
5 #include <linux/slab.h>
6 #include <linux/sched.h>
8 static struct kmem_cache *task_xstate_cachep;
10 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
13 dst->thread.xstate = kmem_cache_alloc(task_xstate_cachep, GFP_KERNEL);
14 if (!dst->thread.xstate)
16 WARN_ON((unsigned long)dst->thread.xstate & 15);
17 memcpy(dst->thread.xstate, src->thread.xstate, xstate_size);
21 void free_thread_info(struct thread_info *ti)
23 kmem_cache_free(task_xstate_cachep, ti->task->thread.xstate);
24 ti->task->thread.xstate = NULL;
26 free_pages((unsigned long)(ti), get_order(THREAD_SIZE));
29 void arch_task_cache_init(void)
32 kmem_cache_create("task_xstate", xstate_size,
33 __alignof__(union thread_xstate),