archives/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-03-08 04:24:31 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

workqueue: Remove rcu_read_lock/unlock() in wq_watchdog_timer_fn()

Browse source 
The wq_watchdog_timer_fn() is executed in the softirq context, this
is already in the RCU read critical section, this commit therefore
remove rcu_read_lock/unlock() in wq_watchdog_timer_fn().

Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Zqiang 2025-09-04 19:31:33 +08:00 • committed by Tejun Heo
parent fd5081f4ef
commit cda2b2d647
1 changed files with 0 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

4
kernel/workqueue.c
View file

@ -7544,8 +7544,6 @@ static void wq_watchdog_timer_fn(struct timer_list *unused)
if (!thresh)
return;
rcu_read_lock();
for_each_pool(pool, pi) {
unsigned long pool_ts, touched, ts;
@ -7587,8 +7585,6 @@ static void wq_watchdog_timer_fn(struct timer_list *unused)
}
rcu_read_unlock();
if (lockup_detected)
show_all_workqueues();