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Commit 4e1a1f9a authored by Tejun Heo's avatar Tejun Heo
Browse files

workqueue: separate out init_worker_pool() from init_workqueues() 



This will be used to implement unbound pools with custom attributes.

This patch doesn't introduce any functional changes.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reviewed-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
parent 34a06bd6

kernel/workqueue.c

+21 −16
Original line number Diff line number Diff line
@@ -3123,6 +3123,26 @@ int keventd_up(void) 
	return system_wq != NULL;

}



static void init_worker_pool(struct worker_pool *pool)

{

	spin_lock_init(&pool->lock);

	pool->flags |= POOL_DISASSOCIATED;

	INIT_LIST_HEAD(&pool->worklist);

	INIT_LIST_HEAD(&pool->idle_list);

	hash_init(pool->busy_hash);



	init_timer_deferrable(&pool->idle_timer);

	pool->idle_timer.function = idle_worker_timeout;

	pool->idle_timer.data = (unsigned long)pool;



	setup_timer(&pool->mayday_timer, pool_mayday_timeout,

		    (unsigned long)pool);



	mutex_init(&pool->manager_arb);

	mutex_init(&pool->assoc_mutex);

	ida_init(&pool->worker_ida);

}



static int alloc_and_link_pwqs(struct workqueue_struct *wq)

{

	bool highpri = wq->flags & WQ_HIGHPRI;
@@ -3790,23 +3810,8 @@ static int __init init_workqueues(void) 
		struct worker_pool *pool;



		for_each_std_worker_pool(pool, cpu) {

			spin_lock_init(&pool->lock);

			init_worker_pool(pool);

			pool->cpu = cpu;

			pool->flags |= POOL_DISASSOCIATED;

			INIT_LIST_HEAD(&pool->worklist);

			INIT_LIST_HEAD(&pool->idle_list);

			hash_init(pool->busy_hash);



			init_timer_deferrable(&pool->idle_timer);

			pool->idle_timer.function = idle_worker_timeout;

			pool->idle_timer.data = (unsigned long)pool;



			setup_timer(&pool->mayday_timer, pool_mayday_timeout,

				    (unsigned long)pool);



			mutex_init(&pool->manager_arb);

			mutex_init(&pool->assoc_mutex);

			ida_init(&pool->worker_ida);



			/* alloc pool ID */

			BUG_ON(worker_pool_assign_id(pool));