diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2012-12-03 16:25:21 +0100 |
---|---|---|
committer | Steven Rostedt <rostedt@goodmis.org> | 2013-02-22 12:21:22 -0500 |
commit | 1e3f47ba57516b44220d4c73b6ca615fb6a8a026 (patch) | |
tree | 8098cce7fb5b9fe0379171be8971afa3f97453a2 | |
parent | 8a497bb3bffc847e1f36c1a0b7a7716d1fe95ba4 (diff) |
rcutiny: Use simple waitqueue
Simple waitqueues can be handled from interrupt disabled contexts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r-- | kernel/rcutiny_plugin.h | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/kernel/rcutiny_plugin.h b/kernel/rcutiny_plugin.h index 2b0484a5dc28..f0a6606ec1e7 100644 --- a/kernel/rcutiny_plugin.h +++ b/kernel/rcutiny_plugin.h @@ -26,6 +26,7 @@ #include <linux/module.h> #include <linux/debugfs.h> #include <linux/seq_file.h> +#include <linux/wait-simple.h> /* Global control variables for rcupdate callback mechanism. */ struct rcu_ctrlblk { @@ -250,7 +251,7 @@ static void show_tiny_preempt_stats(struct seq_file *m) /* Controls for rcu_kthread() kthread. */ static struct task_struct *rcu_kthread_task; -static DECLARE_WAIT_QUEUE_HEAD(rcu_kthread_wq); +static DEFINE_SWAIT_HEAD(rcu_kthread_wq); static unsigned long have_rcu_kthread_work; /* @@ -720,7 +721,7 @@ void synchronize_rcu(void) } EXPORT_SYMBOL_GPL(synchronize_rcu); -static DECLARE_WAIT_QUEUE_HEAD(sync_rcu_preempt_exp_wq); +static DEFINE_SWAIT_HEAD(sync_rcu_preempt_exp_wq); static unsigned long sync_rcu_preempt_exp_count; static DEFINE_MUTEX(sync_rcu_preempt_exp_mutex); @@ -742,7 +743,7 @@ static int rcu_preempted_readers_exp(void) */ static void rcu_report_exp_done(void) { - wake_up(&sync_rcu_preempt_exp_wq); + swait_wake(&sync_rcu_preempt_exp_wq); } /* @@ -794,8 +795,8 @@ void synchronize_rcu_expedited(void) else { rcu_initiate_boost(); local_irq_restore(flags); - wait_event(sync_rcu_preempt_exp_wq, - !rcu_preempted_readers_exp()); + swait_event(sync_rcu_preempt_exp_wq, + !rcu_preempted_readers_exp()); } /* Clean up and exit. */ @@ -882,7 +883,7 @@ static void rcu_preempt_process_callbacks(void) static void invoke_rcu_callbacks(void) { have_rcu_kthread_work = 1; - wake_up(&rcu_kthread_wq); + swake_up(&rcu_kthread_wq); } /* @@ -899,8 +900,8 @@ static int rcu_kthread(void *arg) unsigned long flags; for (;;) { - wait_event_interruptible(rcu_kthread_wq, - have_rcu_kthread_work != 0); + swait_event_interruptible(rcu_kthread_wq, + have_rcu_kthread_work != 0); morework = rcu_boost(); local_irq_save(flags); work = have_rcu_kthread_work; |