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worker_thread: don't play with SIGCHLD and numa policy

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worker_thread() inherits ignored SIGCHLD and numa_default_policy() from its
parent, kthreadd.  No need to setup this again.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Oleg Nesterov 2007-05-09 02:34:36 -07:00 committed by Linus Torvalds
parent 90cce03d9b
commit 5de18d1697
1 changed files with 0 additions and 12 deletions
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12
kernel/workqueue.c
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@ -289,23 +289,11 @@ static int worker_thread(void *__cwq)
{ {
struct cpu_workqueue_struct *cwq = __cwq; struct cpu_workqueue_struct *cwq = __cwq;
DEFINE_WAIT(wait); DEFINE_WAIT(wait);
struct k_sigaction sa;
if (!cwq->wq->freezeable) if (!cwq->wq->freezeable)
current->flags |= PF_NOFREEZE; current->flags |= PF_NOFREEZE;
set_user_nice(current, -5); set_user_nice(current, -5);
/*
* We inherited MPOL_INTERLEAVE from the booting kernel.
* Set MPOL_DEFAULT to insure node local allocations.
*/
numa_default_policy();
/* SIG_IGN makes children autoreap: see do_notify_parent(). */
sa.sa.sa_handler = SIG_IGN;
sa.sa.sa_flags = 0;
siginitset(&sa.sa.sa_mask, sigmask(SIGCHLD));
do_sigaction(SIGCHLD, &sa, (struct k_sigaction *)0);
for (;;) { for (;;) {
prepare_to_wait(&cwq->more_work, &wait, TASK_INTERRUPTIBLE); prepare_to_wait(&cwq->more_work, &wait, TASK_INTERRUPTIBLE);