diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-29 17:28:11 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-09-20 21:16:17 -0700 |
| commit | f4ecea309d3e17ba5e90082308125ad23bd5701b (patch) | |
| tree | bf7623bc786bc0c9709a17aac6b459e7b1d21656 /kernel/rcu/tree_plugin.h | |
| parent | 19a5ecde086a6a5287978b12ae948fa691b197b7 (diff) | |
| download | op-kernel-dev-f4ecea309d3e17ba5e90082308125ad23bd5701b.zip op-kernel-dev-f4ecea309d3e17ba5e90082308125ad23bd5701b.tar.gz | |
rcu: Use rsp->expedited_wq instead of sync_rcu_preempt_exp_wq
Now that there is an ->expedited_wq waitqueue in each rcu_state structure,
there is no need for the sync_rcu_preempt_exp_wq global variable. This
commit therefore substitutes ->expedited_wq for sync_rcu_preempt_exp_wq.
It also initializes ->expedited_wq only once at boot instead of at the
start of each expedited grace period.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index b2bf396..72df006 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -535,8 +535,6 @@ void synchronize_rcu(void) } EXPORT_SYMBOL_GPL(synchronize_rcu); -static DECLARE_WAIT_QUEUE_HEAD(sync_rcu_preempt_exp_wq); - /* * Return non-zero if there are any tasks in RCU read-side critical * sections blocking the current preemptible-RCU expedited grace period. @@ -590,7 +588,7 @@ static void rcu_report_exp_rnp(struct rcu_state *rsp, struct rcu_node *rnp, raw_spin_unlock_irqrestore(&rnp->lock, flags); if (wake) { smp_mb(); /* EGP done before wake_up(). */ - wake_up(&sync_rcu_preempt_exp_wq); + wake_up(&rsp->expedited_wq); } break; } @@ -729,7 +727,7 @@ void synchronize_rcu_expedited(void) /* Wait for snapshotted ->blkd_tasks lists to drain. */ rnp = rcu_get_root(rsp); - wait_event(sync_rcu_preempt_exp_wq, + wait_event(rsp->expedited_wq, sync_rcu_preempt_exp_done(rnp)); /* Clean up and exit. */ |
