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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 21 Oct 2022 16:15:56 +0200
Subject: [PATCH 343/353] Revert "workqueue: Use local irq lock instead of irq
disable regions"
Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=60087367b50b95abf48d954ffb59b9b22c1f9f99
This reverts the PREEMPT_RT related changes to workqueue. It reverts the
usage of local_locks() and cpu_chill().
This is a preparation to pull in the PREEMPT_RT related changes which
were merged upstream.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
[wagi: 827b6f6962da ("workqueue: rework") already reverted
most of the changes, except the missing update in
put_pwq_unlocked.]
Signed-off-by: Daniel Wagner <wagi@monom.org>
---
kernel/workqueue.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index c047a647146e..e0ab9febe11f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1496,11 +1496,9 @@ EXPORT_SYMBOL(queue_work_on);
void delayed_work_timer_fn(struct timer_list *t)
{
struct delayed_work *dwork = from_timer(dwork, t, timer);
- unsigned long flags;
- local_irq_save(flags);
+ /* should have been called from irqsafe timer with irq already off */
__queue_work(dwork->cpu, dwork->wq, &dwork->work);
- local_irq_restore(flags);
}
EXPORT_SYMBOL(delayed_work_timer_fn);
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