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[PATCH] remove busywait in refrigerator

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

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pavel Machek 2005-09-03 15:56:53 -07:00 committed by Linus Torvalds
parent 52fdd08903
commit 2a23b5d1e1
1 changed files with 3 additions and 2 deletions
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5
kernel/power/process.c
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@ -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;
}