diff options
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/sched.c | 60 |
1 files changed, 10 insertions, 50 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 29b1c1441f4d..043eef4c15a2 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -58,13 +58,15 @@ struct workqueue_struct *rpciod_workqueue; * rpc_run_timer(). */ static void -__rpc_disable_timer(struct rpc_task *task) +__rpc_disable_timer(struct rpc_wait_queue *queue, struct rpc_task *task) { if (task->tk_timeout == 0) return; dprintk("RPC: %5u disabling timer\n", task->tk_pid); task->tk_timeout = 0; list_del(&task->u.tk_wait.timer_list); + if (list_empty(&queue->timer_list.list)) + del_timer(&queue->timer_list.timer); } static void @@ -78,7 +80,7 @@ rpc_set_queue_timer(struct rpc_wait_queue *queue, unsigned long expires) * Set up a timer for the current task. */ static void -__rpc_add_timer(struct rpc_task *task) +__rpc_add_timer(struct rpc_wait_queue *queue, struct rpc_task *task) { if (!task->tk_timeout) return; @@ -86,23 +88,10 @@ __rpc_add_timer(struct rpc_task *task) dprintk("RPC: %5u setting alarm for %lu ms\n", task->tk_pid, task->tk_timeout * 1000 / HZ); - set_bit(RPC_TASK_HAS_TIMER, &task->tk_runstate); - mod_timer(&task->tk_timer, jiffies + task->tk_timeout); -} - -/* - * Delete any timer for the current task. Because we use del_timer_sync(), - * this function should never be called while holding queue->lock. - */ -static void -rpc_delete_timer(struct rpc_task *task) -{ - if (RPC_IS_QUEUED(task)) - return; - if (test_and_clear_bit(RPC_TASK_HAS_TIMER, &task->tk_runstate)) { - del_singleshot_timer_sync(&task->tk_timer); - dprintk("RPC: %5u deleting timer\n", task->tk_pid); - } + task->u.tk_wait.expires = jiffies + task->tk_timeout; + if (list_empty(&queue->timer_list.list) || time_before(task->u.tk_wait.expires, queue->timer_list.expires)) + rpc_set_queue_timer(queue, task->u.tk_wait.expires); + list_add(&task->u.tk_wait.timer_list, &queue->timer_list.list); } /* @@ -172,7 +161,7 @@ static void __rpc_remove_wait_queue_priority(struct rpc_task *task) */ static void __rpc_remove_wait_queue(struct rpc_wait_queue *queue, struct rpc_task *task) { - __rpc_disable_timer(task); + __rpc_disable_timer(queue, task); if (RPC_IS_PRIORITY(queue)) __rpc_remove_wait_queue_priority(task); list_del(&task->u.tk_wait.list); @@ -344,7 +333,7 @@ static void __rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task, BUG_ON(task->tk_callback != NULL); task->tk_callback = action; - __rpc_add_timer(task); + __rpc_add_timer(q, task); } void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task, @@ -555,26 +544,6 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status) } EXPORT_SYMBOL_GPL(rpc_wake_up_status); -/* - * Run a timeout function. - */ -static void rpc_run_timer(unsigned long ptr) -{ - struct rpc_task *task = (struct rpc_task *)ptr; - struct rpc_wait_queue *queue = task->tk_waitqueue; - - spin_lock(&queue->lock); - if (RPC_IS_QUEUED(task) && task->tk_waitqueue == queue) { - dprintk("RPC: %5u timeout\n", task->tk_pid); - task->tk_status = -ETIMEDOUT; - rpc_wake_up_task_queue_locked(queue, task); - } - spin_unlock(&queue->lock); - smp_mb__before_clear_bit(); - clear_bit(RPC_TASK_HAS_TIMER, &task->tk_runstate); - smp_mb__after_clear_bit(); -} - static void __rpc_queue_timer_fn(unsigned long ptr) { struct rpc_wait_queue *queue = (struct rpc_wait_queue *)ptr; @@ -586,7 +555,6 @@ static void __rpc_queue_timer_fn(unsigned long ptr) list_for_each_entry_safe(task, n, &queue->timer_list.list, u.tk_wait.timer_list) { timeo = task->u.tk_wait.expires; if (time_after_eq(now, timeo)) { - list_del_init(&task->u.tk_wait.timer_list); dprintk("RPC: %5u timeout\n", task->tk_pid); task->tk_status = -ETIMEDOUT; rpc_wake_up_task_queue_locked(queue, task); @@ -666,10 +634,6 @@ static void __rpc_execute(struct rpc_task *task) BUG_ON(RPC_IS_QUEUED(task)); for (;;) { - /* - * Garbage collection of pending timers... - */ - rpc_delete_timer(task); /* * Execute any pending callback. @@ -838,7 +802,6 @@ EXPORT_SYMBOL_GPL(rpc_free); static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *task_setup_data) { memset(task, 0, sizeof(*task)); - setup_timer(&task->tk_timer, rpc_run_timer, (unsigned long)task); atomic_set(&task->tk_count, 1); task->tk_flags = task_setup_data->flags; task->tk_ops = task_setup_data->callback_ops; @@ -971,9 +934,6 @@ static void rpc_release_task(struct rpc_task *task) } BUG_ON (RPC_IS_QUEUED(task)); - /* Synchronously delete any running timer */ - rpc_delete_timer(task); - #ifdef RPC_DEBUG task->tk_magic = 0; #endif |
