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Revert "sched: Add a generic notifier when a task struct is about to be freed"

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This reverts commit 9e6cb2f4db.
This commit is contained in:
黄涛 2011-07-30 22:16:32 +08:00
parent d7473f13a3
commit 496721f1c2
2 changed files with 0 additions and 19 deletions
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3
include/linux/sched.h
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@ -1724,9 +1724,6 @@ extern cputime_t task_utime(struct task_struct *p);
extern cputime_t task_stime(struct task_struct *p);
extern cputime_t task_gtime(struct task_struct *p);
extern int task_free_register(struct notifier_block *n);
extern int task_free_unregister(struct notifier_block *n);
/*
* Per process flags
*/

16
kernel/fork.c
View File

@ -138,9 +138,6 @@ struct kmem_cache *vm_area_cachep;
/* SLAB cache for mm_struct structures (tsk->mm) */
static struct kmem_cache *mm_cachep;
/* Notifier list called when a task struct is freed */
static ATOMIC_NOTIFIER_HEAD(task_free_notifier);
static void account_kernel_stack(struct thread_info *ti, int account)
{
struct zone *zone = page_zone(virt_to_page(ti));
@ -159,18 +156,6 @@ void free_task(struct task_struct *tsk)
}
EXPORT_SYMBOL(free_task);
int task_free_register(struct notifier_block *n)
{
return atomic_notifier_chain_register(&task_free_notifier, n);
}
EXPORT_SYMBOL(task_free_register);
int task_free_unregister(struct notifier_block *n)
{
return atomic_notifier_chain_unregister(&task_free_notifier, n);
}
EXPORT_SYMBOL(task_free_unregister);
void __put_task_struct(struct task_struct *tsk)
{
WARN_ON(!tsk->exit_state);
@ -180,7 +165,6 @@ void __put_task_struct(struct task_struct *tsk)
exit_creds(tsk);
delayacct_tsk_free(tsk);
atomic_notifier_call_chain(&task_free_notifier, 0, tsk);
if (!profile_handoff_task(tsk))
free_task(tsk);
}