Messages in this thread Patch in this message | | | From | Zqiang <> | Subject | [PATCH] workqueue: Restrict kworker in the offline CPU pool running on housekeeping CPUs | Date | Tue, 29 Mar 2022 13:17:14 +0800 |
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When CPU going offline, all workers in this CPU pool will lose affinity to this CPU, and may run to isolated CPU. like kworker in unbound pool, set CPU affinity of these kworker is housekeeping cpumask.
Signed-off-by: Zqiang <qiang1.zhang@intel.com> --- kernel/workqueue.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index abcc9a2ac319..c509ce73a783 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5023,7 +5023,8 @@ static void unbind_workers(int cpu) for_each_pool_worker(worker, pool) { kthread_set_per_cpu(worker->task, -1); - WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, cpu_possible_mask) < 0); + WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task, + housekeeping_cpumask(HK_TYPE_WQ)) < 0); } mutex_unlock(&wq_pool_attach_mutex); -- 2.25.1
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