linux-kernel - [PATCH 7/7] workqueue: remove keventd

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Date:   Thu, 15 Sep 2016 15:30:21 -0400
From:   Tejun Heo <tj@...nel.org>
To:     torvalds@...ux-foundation.org
Cc:     linux-kernel@...r.kernel.org, jiangshanlai@...il.com,
        akpm@...ux-foundation.org, kernel-team@...com,
        Tejun Heo <tj@...nel.org>
Subject: [PATCH 7/7] workqueue: remove keventd_up()

keventd_up() no longer has in-kernel users.  Remove it and make
wq_online static.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 include/linux/workqueue.h | 10 ----------
 kernel/workqueue.c        |  2 +-
 2 files changed, 1 insertion(+), 11 deletions(-)

diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 91d416f..5641713 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -358,8 +358,6 @@ extern struct workqueue_struct *system_freezable_wq;
 extern struct workqueue_struct *system_power_efficient_wq;
 extern struct workqueue_struct *system_freezable_power_efficient_wq;
 
-extern bool wq_online;
-
 extern struct workqueue_struct *
 __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active,
 	struct lock_class_key *key, const char *lock_name, ...) __printf(1, 6);
@@ -591,14 +589,6 @@ static inline bool schedule_delayed_work(struct delayed_work *dwork,
 	return queue_delayed_work(system_wq, dwork, delay);
 }
 
-/**
- * keventd_up - is workqueue initialized yet?
- */
-static inline bool keventd_up(void)
-{
-	return wq_online;
-}
-
 #ifndef CONFIG_SMP
 static inline long work_on_cpu(int cpu, long (*fn)(void *), void *arg)
 {
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index a05ab14..3bef80a 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -290,7 +290,7 @@ module_param_named(disable_numa, wq_disable_numa, bool, 0444);
 static bool wq_power_efficient = IS_ENABLED(CONFIG_WQ_POWER_EFFICIENT_DEFAULT);
 module_param_named(power_efficient, wq_power_efficient, bool, 0444);
 
-bool wq_online;				/* can kworkers be created yet? */
+static bool wq_online;			/* can kworkers be created yet? */
 
 static bool wq_numa_enabled;		/* unbound NUMA affinity enabled */
 
-- 
2.7.4