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Message-Id: <20210622124211.715378-1-qiang.zhang@windriver.com> Date: Tue, 22 Jun 2021 20:42:11 +0800 From: qiang.zhang@...driver.com To: tj@...nel.org, jiangshanlai@...il.com Cc: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org Subject: [PATCH v2] workqueue: set the rescuer worker that belong to freezable wq is freezable From: Zqiang <qiang.zhang@...driver.com> If the rescuer worker belong to freezable wq, when this wq is frozen, the rescuer worker also need to be frozen. Signed-off-by: Zqiang <qiang.zhang@...driver.com> --- v1->v2: use kthread_freezable_should_stop() replaces try_to_freeze(). kernel/workqueue.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 104e3ef04e33..dd7b78bdb7f1 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -2476,6 +2476,9 @@ static int rescuer_thread(void *__rescuer) * doesn't participate in concurrency management. */ set_pf_worker(true); + + if (wq->flags & WQ_FREEZABLE) + set_freezable(); repeat: set_current_state(TASK_IDLE); @@ -2487,7 +2490,7 @@ static int rescuer_thread(void *__rescuer) * @wq->maydays processing before acting on should_stop so that the * list is always empty on exit. */ - should_stop = kthread_should_stop(); + should_stop = kthread_freezable_should_stop(NULL); /* see whether any pwq is asking for help */ raw_spin_lock_irq(&wq_mayday_lock); -- 2.25.1
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