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authorTejun Heo <tj@kernel.org>2013-03-13 19:47:40 -0700
committerTejun Heo <tj@kernel.org>2013-03-13 19:47:40 -0700
commit2e109a2855bf6cf675a8b74dbd89b6492e8def42 (patch)
tree22357bb67654f29db07d0f80b83e4e845cbee8c2 /kernel
parent794b18bc8a3f80445e1f85c9c87c74de9575c93a (diff)
downloadlinaro-lsk-2e109a2855bf6cf675a8b74dbd89b6492e8def42.tar.gz
workqueue: rename workqueue_lock to wq_mayday_lock
With the recent locking updates, the only thing protected by workqueue_lock is workqueue->maydays list. Rename workqueue_lock to wq_mayday_lock. This patch is pure rename. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/workqueue.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 63856dfbd08..969be0b7207 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -125,10 +125,10 @@ enum {
*
* PW: pwq_lock protected.
*
- * W: workqueue_lock protected.
- *
* FR: wq->flush_mutex and pwq_lock protected for writes. Sched-RCU
* protected for reads.
+ *
+ * MD: wq_mayday_lock protected.
*/
/* struct worker is defined in workqueue_internal.h */
@@ -194,7 +194,7 @@ struct pool_workqueue {
int max_active; /* L: max active works */
struct list_head delayed_works; /* L: delayed works */
struct list_head pwqs_node; /* FR: node on wq->pwqs */
- struct list_head mayday_node; /* W: node on wq->maydays */
+ struct list_head mayday_node; /* MD: node on wq->maydays */
/*
* Release of unbound pwq is punted to system_wq. See put_pwq()
@@ -235,7 +235,7 @@ struct workqueue_struct {
struct list_head flusher_queue; /* F: flush waiters */
struct list_head flusher_overflow; /* F: flush overflow list */
- struct list_head maydays; /* W: pwqs requesting rescue */
+ struct list_head maydays; /* MD: pwqs requesting rescue */
struct worker *rescuer; /* I: rescue worker */
int nr_drainers; /* WQ: drain in progress */
@@ -254,7 +254,7 @@ static struct kmem_cache *pwq_cache;
static DEFINE_MUTEX(wq_mutex); /* protects workqueues and pools */
static DEFINE_SPINLOCK(pwq_lock); /* protects pool_workqueues */
-static DEFINE_SPINLOCK(workqueue_lock);
+static DEFINE_SPINLOCK(wq_mayday_lock); /* protects wq->maydays list */
static LIST_HEAD(workqueues); /* WQ: list of all workqueues */
static bool workqueue_freezing; /* WQ: have wqs started freezing? */
@@ -1894,7 +1894,7 @@ static void send_mayday(struct work_struct *work)
struct pool_workqueue *pwq = get_work_pwq(work);
struct workqueue_struct *wq = pwq->wq;
- lockdep_assert_held(&workqueue_lock);
+ lockdep_assert_held(&wq_mayday_lock);
if (!wq->rescuer)
return;
@@ -1911,7 +1911,7 @@ static void pool_mayday_timeout(unsigned long __pool)
struct worker_pool *pool = (void *)__pool;
struct work_struct *work;
- spin_lock_irq(&workqueue_lock); /* for wq->maydays */
+ spin_lock_irq(&wq_mayday_lock); /* for wq->maydays */
spin_lock(&pool->lock);
if (need_to_create_worker(pool)) {
@@ -1926,7 +1926,7 @@ static void pool_mayday_timeout(unsigned long __pool)
}
spin_unlock(&pool->lock);
- spin_unlock_irq(&workqueue_lock);
+ spin_unlock_irq(&wq_mayday_lock);
mod_timer(&pool->mayday_timer, jiffies + MAYDAY_INTERVAL);
}
@@ -2404,7 +2404,7 @@ repeat:
}
/* see whether any pwq is asking for help */
- spin_lock_irq(&workqueue_lock);
+ spin_lock_irq(&wq_mayday_lock);
while (!list_empty(&wq->maydays)) {
struct pool_workqueue *pwq = list_first_entry(&wq->maydays,
@@ -2415,7 +2415,7 @@ repeat:
__set_current_state(TASK_RUNNING);
list_del_init(&pwq->mayday_node);
- spin_unlock_irq(&workqueue_lock);
+ spin_unlock_irq(&wq_mayday_lock);
/* migrate to the target cpu if possible */
worker_maybe_bind_and_lock(pool);
@@ -2442,10 +2442,10 @@ repeat:
rescuer->pool = NULL;
spin_unlock(&pool->lock);
- spin_lock(&workqueue_lock);
+ spin_lock(&wq_mayday_lock);
}
- spin_unlock_irq(&workqueue_lock);
+ spin_unlock_irq(&wq_mayday_lock);
/* rescuers should never participate in concurrency management */
WARN_ON_ONCE(!(rescuer->flags & WORKER_NOT_RUNNING));