diff options
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 63856dfbd082..969be0b72071 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)); |