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Commit 5de18d16 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
Browse files

worker_thread: don't play with SIGCHLD and numa policy 



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

Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Acked-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 90cce03d

kernel/workqueue.c

+0 −12
Original line number Diff line number Diff line
@@ -289,23 +289,11 @@ static int worker_thread(void *__cwq) 
{

	struct cpu_workqueue_struct *cwq = __cwq;

	DEFINE_WAIT(wait);

	struct k_sigaction sa;



	if (!cwq->wq->freezeable)

		current->flags |= PF_NOFREEZE;



	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 (;;) {

		prepare_to_wait(&cwq->more_work, &wait, TASK_INTERRUPTIBLE);