diff options
Diffstat (limited to 'kernel/workqueue.c')
| -rw-r--r-- | kernel/workqueue.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/kernel/workqueue.c b/kernel/workqueue.c index cdc6bfc84b78..e651239f1ece 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -58,7 +58,7 @@ enum { * be executing on any CPU. The gcwq behaves as an unbound one. * * Note that DISASSOCIATED can be flipped only while holding - * managership of all pools on the gcwq to avoid changing binding + * assoc_mutex of all pools on the gcwq to avoid changing binding * state while create_worker() is in progress. */ GCWQ_DISASSOCIATED = 1 << 0, /* cpu can't serve workers */ @@ -165,7 +165,7 @@ struct worker_pool { struct timer_list idle_timer; /* L: worker idle timeout */ struct timer_list mayday_timer; /* L: SOS timer for workers */ - struct mutex manager_mutex; /* mutex manager should hold */ + struct mutex assoc_mutex; /* protect GCWQ_DISASSOCIATED */ struct ida worker_ida; /* L: for worker IDs */ }; @@ -1681,7 +1681,7 @@ static void rebind_workers(struct global_cwq *gcwq) lockdep_assert_held(&gcwq->lock); for_each_worker_pool(pool, gcwq) - lockdep_assert_held(&pool->manager_mutex); + lockdep_assert_held(&pool->assoc_mutex); /* dequeue and kick idle ones */ for_each_worker_pool(pool, gcwq) { @@ -2081,22 +2081,22 @@ static bool manage_workers(struct worker *worker) * grab %POOL_MANAGING_WORKERS to achieve this because that can * lead to idle worker depletion (all become busy thinking someone * else is managing) which in turn can result in deadlock under - * extreme circumstances. Use @pool->manager_mutex to synchronize + * extreme circumstances. Use @pool->assoc_mutex to synchronize * manager against CPU hotplug. * - * manager_mutex would always be free unless CPU hotplug is in + * assoc_mutex would always be free unless CPU hotplug is in * progress. trylock first without dropping @gcwq->lock. */ - if (unlikely(!mutex_trylock(&pool->manager_mutex))) { + if (unlikely(!mutex_trylock(&pool->assoc_mutex))) { spin_unlock_irq(&pool->gcwq->lock); - mutex_lock(&pool->manager_mutex); + mutex_lock(&pool->assoc_mutex); /* * CPU hotplug could have happened while we were waiting - * for manager_mutex. Hotplug itself can't handle us + * for assoc_mutex. Hotplug itself can't handle us * because manager isn't either on idle or busy list, and * @gcwq's state and ours could have deviated. * - * As hotplug is now excluded via manager_mutex, we can + * As hotplug is now excluded via assoc_mutex, we can * simply try to bind. It will succeed or fail depending * on @gcwq's current state. Try it and adjust * %WORKER_UNBOUND accordingly. @@ -2119,7 +2119,7 @@ static bool manage_workers(struct worker *worker) ret |= maybe_create_worker(pool); pool->flags &= ~POOL_MANAGING_WORKERS; - mutex_unlock(&pool->manager_mutex); + mutex_unlock(&pool->assoc_mutex); return ret; } @@ -3474,23 +3474,23 @@ EXPORT_SYMBOL_GPL(work_busy); */ /* claim manager positions of all pools */ -static void gcwq_claim_management_and_lock(struct global_cwq *gcwq) +static void gcwq_claim_assoc_and_lock(struct global_cwq *gcwq) { struct worker_pool *pool; for_each_worker_pool(pool, gcwq) - mutex_lock_nested(&pool->manager_mutex, pool - gcwq->pools); + mutex_lock_nested(&pool->assoc_mutex, pool - gcwq->pools); spin_lock_irq(&gcwq->lock); } /* release manager positions */ -static void gcwq_release_management_and_unlock(struct global_cwq *gcwq) +static void gcwq_release_assoc_and_unlock(struct global_cwq *gcwq) { struct worker_pool *pool; spin_unlock_irq(&gcwq->lock); for_each_worker_pool(pool, gcwq) - mutex_unlock(&pool->manager_mutex); + mutex_unlock(&pool->assoc_mutex); } static void gcwq_unbind_fn(struct work_struct *work) @@ -3503,7 +3503,7 @@ static void gcwq_unbind_fn(struct work_struct *work) BUG_ON(gcwq->cpu != smp_processor_id()); - gcwq_claim_management_and_lock(gcwq); + gcwq_claim_assoc_and_lock(gcwq); /* * We've claimed all manager positions. Make all workers unbound @@ -3520,7 +3520,7 @@ static void gcwq_unbind_fn(struct work_struct *work) gcwq->flags |= GCWQ_DISASSOCIATED; - gcwq_release_management_and_unlock(gcwq); + gcwq_release_assoc_and_unlock(gcwq); /* * Call schedule() so that we cross rq->lock and thus can guarantee @@ -3576,10 +3576,10 @@ static int __devinit workqueue_cpu_up_callback(struct notifier_block *nfb, case CPU_DOWN_FAILED: case CPU_ONLINE: - gcwq_claim_management_and_lock(gcwq); + gcwq_claim_assoc_and_lock(gcwq); gcwq->flags &= ~GCWQ_DISASSOCIATED; rebind_workers(gcwq); - gcwq_release_management_and_unlock(gcwq); + gcwq_release_assoc_and_unlock(gcwq); break; } return NOTIFY_OK; @@ -3833,7 +3833,7 @@ static int __init init_workqueues(void) setup_timer(&pool->mayday_timer, gcwq_mayday_timeout, (unsigned long)pool); - mutex_init(&pool->manager_mutex); + mutex_init(&pool->assoc_mutex); ida_init(&pool->worker_ida); } } |