linux-kernel - [PATCH -tip V3 4/8] workqueue: use wq_online_cpumask in restore_unbound_workers

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Message-Id: <20201226025117.2770-5-jiangshanlai@gmail.com>
Date:   Sat, 26 Dec 2020 10:51:12 +0800
From:   Lai Jiangshan <jiangshanlai@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Valentin Schneider <valentin.schneider@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Qian Cai <cai@...hat.com>,
        Vincent Donnefort <vincent.donnefort@....com>,
        Dexuan Cui <decui@...rosoft.com>,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        Tejun Heo <tj@...nel.org>,
        Lai Jiangshan <jiangshanlai@...il.com>
Subject: [PATCH -tip V3 4/8] workqueue: use wq_online_cpumask in restore_unbound_workers_cpumask()

From: Lai Jiangshan <laijs@...ux.alibaba.com>

restore_unbound_workers_cpumask() is called when CPU_ONLINE, where
wq_online_cpumask equals to cpu_online_mask. So no fucntionality
changed.

Acked-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
---
 kernel/workqueue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 6f75f7ebeb17..0a95ae14d46f 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5033,13 +5033,14 @@ static void restore_unbound_workers_cpumask(struct worker_pool *pool, int cpu)
 	static cpumask_t cpumask;
 	struct worker *worker;
 
+	lockdep_assert_held(&wq_pool_mutex);
 	lockdep_assert_held(&wq_pool_attach_mutex);
 
 	/* is @cpu allowed for @pool? */
 	if (!cpumask_test_cpu(cpu, pool->attrs->cpumask))
 		return;
 
-	cpumask_and(&cpumask, pool->attrs->cpumask, cpu_online_mask);
+	cpumask_and(&cpumask, pool->attrs->cpumask, wq_online_cpumask);
 
 	/* as we're called from CPU_ONLINE, the following shouldn't fail */
 	for_each_pool_worker(worker, pool)
-- 
2.19.1.6.gb485710b