From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, laijs@cn.fujitsu.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@polymtl.ca,
josh@joshtriplett.org, dvhltc@us.ibm.com, niv@us.ibm.com,
tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org,
Valdis.Kletnieks@vt.edu, dhowells@redhat.com,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: [PATCH tip/core/rcu 2/4] rcu: enable synchronize_sched_expedited() fastpath
Date: Tue, 10 Nov 2009 13:37:20 -0800 [thread overview]
Message-ID: <1257889042435-git-send-email-> (raw)
In-Reply-To: <20091110213651.GA21411@linux.vnet.ibm.com>
From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
This patch adds a counter increment to enable tasks to actually take
the synchronize_sched_expedited() function's fastpath.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---
kernel/sched.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 76c0e96..e69fee4 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -10865,6 +10865,7 @@ void synchronize_sched_expedited(void)
spin_unlock_irqrestore(&rq->lock, flags);
}
rcu_expedited_state = RCU_EXPEDITED_STATE_IDLE;
+ synchronize_sched_expedited_count++;
mutex_unlock(&rcu_sched_expedited_mutex);
put_online_cpus();
if (need_full_sync)
--
1.5.2.5
next prev parent reply other threads:[~2009-11-10 21:37 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-10 21:36 [PATCH tip/core/rcu 0/4] rcu inline, expedited, ->completed cleanups Paul E. McKenney
2009-11-10 21:37 ` [PATCH tip/core/rcu 1/4] rcu: remove inline from forward-referenced functions Paul E. McKenney
2009-11-10 22:27 ` [tip:core/rcu] rcu: Remove " tip-bot for Paul E. McKenney
2009-11-10 22:38 ` Joe Perches
2009-11-10 22:59 ` Paul E. McKenney
2009-11-10 23:06 ` Joe Perches
2009-11-10 23:41 ` Paul E. McKenney
2009-11-11 1:03 ` Joe Perches
2009-11-11 1:42 ` Paul E. McKenney
2009-11-11 3:28 ` Joe Perches
2009-11-11 4:50 ` Paul E. McKenney
2009-11-11 5:41 ` Paul E. McKenney
2009-11-11 7:02 ` Ingo Molnar
2009-11-11 19:47 ` Paul E. McKenney
2009-11-10 23:03 ` [PATCH tip/core/rcu 1/4] rcu: remove " Josh Triplett
2009-11-10 21:37 ` Paul E. McKenney [this message]
2009-11-10 22:27 ` [tip:core/rcu] rcu: Enable synchronize_sched_expedited() fastpath tip-bot for Paul E. McKenney
2009-11-10 21:37 ` [PATCH tip/core/rcu 3/4] rcu: rename dynticks_completed to completed_fqs Paul E. McKenney
2009-11-10 22:28 ` [tip:core/rcu] rcu: Rename " tip-bot for Paul E. McKenney
2009-11-10 21:37 ` [PATCH tip/core/rcu 4/4] rcu: simplify association of quiescent states with grace periods Paul E. McKenney
2009-11-10 22:28 ` [tip:core/rcu] rcu: Simplify " tip-bot for Paul E. McKenney
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