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workqueue: Make send_mayday() take a PWQ argument directly

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Make send_mayday() operate on a PWQ directly instead of taking a work
item, so that rescuer_thread() now calls send_mayday(pwq) instead of
open-coding the mayday list manipulation.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Lai Jiangshan 2025-12-08 21:25:17 +08:00 • committed by Tejun Heo
parent c2f2b01b74
commit fc5ff53d2a
1 changed files with 3 additions and 10 deletions
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13
kernel/workqueue.c
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@ -2976,9 +2976,8 @@ static void idle_cull_fn(struct work_struct *work)
reap_dying_workers(&cull_list);
}
static void send_mayday(struct work_struct *work)
static void send_mayday(struct pool_workqueue *pwq)
{
struct pool_workqueue *pwq = get_work_pwq(work);
struct workqueue_struct *wq = pwq->wq;
lockdep_assert_held(&wq_mayday_lock);
@ -3016,7 +3015,7 @@ static void pool_mayday_timeout(struct timer_list *t)
* rescuers.
*/
list_for_each_entry(work, &pool->worklist, entry)
send_mayday(work);
send_mayday(get_work_pwq(work));
}
raw_spin_unlock(&wq_mayday_lock);
@ -3538,13 +3537,7 @@ repeat:
*/
if (pwq->nr_active && need_to_create_worker(pool)) {
raw_spin_lock(&wq_mayday_lock);
/*
* Queue iff somebody else hasn't queued it already.
*/
if (list_empty(&pwq->mayday_node)) {
get_pwq(pwq);
list_add_tail(&pwq->mayday_node, &wq->maydays);
}
send_mayday(pwq);
raw_spin_unlock(&wq_mayday_lock);
}
}