Commit 2a23b5d1 authored by Pavel Machek's avatar Pavel Machek Committed by Linus Torvalds
Browse files

[PATCH] remove busywait in refrigerator 



This should make refrigerator sleep properly, not busywait after the first
schedule() returns.

Signed-off-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 52fdd089

kernel/power/process.c

+3 −2
Original line number Diff line number Diff line
@@ -38,7 +38,6 @@ void refrigerator(void) 
	   processes around? */

	long save;

	save = current->state;

	current->state = TASK_UNINTERRUPTIBLE;

	pr_debug("%s entered refrigerator\n", current->comm);

	printk("=");
@@ -47,8 +46,10 @@ void refrigerator(void) 
	recalc_sigpending(); /* We sent fake signal, clean it up */

	spin_unlock_irq(&current->sighand->siglock);



	while (frozen(current))

	while (frozen(current)) {

		current->state = TASK_UNINTERRUPTIBLE;

		schedule();

	}

	pr_debug("%s left refrigerator\n", current->comm);

	current->state = save;

}