linux-kernel - [PATCH] workqueue: remove useless WARN_ON

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Message-ID: <1401780761-12229-1-git-send-email-laijs@cn.fujitsu.com>
Date:	Tue, 3 Jun 2014 15:32:41 +0800
From:	Lai Jiangshan <laijs@...fujitsu.com>
To:	<linux-kernel@...r.kernel.org>
CC:	Tejun Heo <tj@...nel.org>, Lai Jiangshan <laijs@...fujitsu.com>
Subject: [PATCH] workqueue: remove useless WARN_ON_ONCE()

The @cpu is fetched via smp_processor_id() in this function,
so the check is useless.

Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com>
---
 kernel/workqueue.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 6b6e9f2..7dc6e66 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4461,8 +4461,6 @@ static void wq_unbind_fn(struct work_struct *work)
 	struct worker *worker;
 
 	for_each_cpu_worker_pool(pool, cpu) {
-		WARN_ON_ONCE(cpu != smp_processor_id());
-
 		mutex_lock(&pool->attach_mutex);
 		spin_lock_irq(&pool->lock);
 
-- 
1.7.4.4

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