From: Peter Zijlstra <peterz@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>,
Joe Korty <joe.korty@ccur.com>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
mathieu.desnoyers@efficios.com, dhowells@redhat.com,
loic.minier@linaro.org, dhaval.giani@gmail.com,
tglx@linutronix.de, linux-kernel@vger.kernel.org,
josh@joshtriplett.org, houston.jim@comcast.net
Subject: Re: [PATCH] a local-timer-free version of RCU
Date: Wed, 10 Nov 2010 18:31:11 +0100 [thread overview]
Message-ID: <1289410271.2084.25.camel@laptop> (raw)
In-Reply-To: <20101110155419.GC5750@nowhere>
On Wed, 2010-11-10 at 16:54 +0100, Frederic Weisbecker wrote:
> run the sched tick and if there was nothing to do
> for some time and we are in userspace, deactivate it.
Not for some time, immediately, have the tick track if it was useful, if
it was not, have it stop itself, like:
tick()
{
int stop = 1;
if (nr_running > 1)
stop = 0;
if(rcu_needs_cpu())
stop = 0;
...
if (stop)
enter_nohz_mode();
}
next prev parent reply other threads:[~2010-11-10 17:31 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 23:21 dyntick-hpc and RCU Paul E. McKenney
2010-11-05 5:27 ` Frederic Weisbecker
2010-11-05 5:38 ` Frederic Weisbecker
2010-11-05 15:06 ` Paul E. McKenney
2010-11-05 20:06 ` Dhaval Giani
2010-11-05 15:04 ` Paul E. McKenney
2010-11-08 14:10 ` Frederic Weisbecker
2010-11-05 21:00 ` [PATCH] a local-timer-free version of RCU Joe Korty
2010-11-06 19:28 ` Paul E. McKenney
2010-11-06 19:34 ` Mathieu Desnoyers
2010-11-06 19:42 ` Mathieu Desnoyers
2010-11-06 19:44 ` Paul E. McKenney
2010-11-08 2:11 ` Udo A. Steinberg
2010-11-08 2:19 ` Udo A. Steinberg
2010-11-08 2:54 ` Paul E. McKenney
2010-11-08 15:32 ` Frederic Weisbecker
2010-11-08 19:38 ` Paul E. McKenney
2010-11-08 20:40 ` Frederic Weisbecker
2010-11-10 18:08 ` Paul E. McKenney
2010-11-08 15:06 ` Frederic Weisbecker
2010-11-08 15:18 ` Joe Korty
2010-11-08 19:50 ` Paul E. McKenney
2010-11-08 19:49 ` Paul E. McKenney
2010-11-08 20:51 ` Frederic Weisbecker
2010-11-06 20:03 ` Mathieu Desnoyers
2010-11-09 9:22 ` Lai Jiangshan
2010-11-10 15:54 ` Frederic Weisbecker
2010-11-10 17:31 ` Peter Zijlstra [this message]
2010-11-10 17:45 ` Frederic Weisbecker
2010-11-11 4:19 ` Paul E. McKenney
2010-11-13 22:30 ` Frederic Weisbecker
2010-11-16 1:28 ` Paul E. McKenney
2010-11-16 13:52 ` Frederic Weisbecker
2010-11-16 15:51 ` Paul E. McKenney
2010-11-17 0:52 ` Frederic Weisbecker
2010-11-17 1:25 ` Paul E. McKenney
2011-03-07 20:31 ` [PATCH] An RCU for SMP with a single CPU garbage collector Joe Korty
[not found] ` <20110307210157.GG3104@linux.vnet.ibm.com>
2011-03-07 21:16 ` Joe Korty
2011-03-07 21:33 ` Joe Korty
2011-03-07 22:51 ` Joe Korty
2011-03-08 9:07 ` Paul E. McKenney
2011-03-08 15:57 ` Joe Korty
2011-03-08 22:53 ` Joe Korty
2011-03-10 0:30 ` Paul E. McKenney
2011-03-10 0:28 ` Paul E. McKenney
2011-03-09 22:29 ` Frederic Weisbecker
2011-03-09 22:15 ` [PATCH 2/4] jrcu: tap rcu_read_unlock Joe Korty
2011-03-10 0:34 ` Paul E. McKenney
2011-03-10 19:50 ` JRCU Theory of Operation Joe Korty
2011-03-12 14:36 ` Paul E. McKenney
2011-03-13 0:43 ` Joe Korty
2011-03-13 5:56 ` Paul E. McKenney
2011-03-13 23:53 ` Joe Korty
2011-03-14 0:50 ` Paul E. McKenney
2011-03-14 0:55 ` Josh Triplett
2011-03-09 22:16 ` [PATCH 3/4] jrcu: tap might_resched() Joe Korty
2011-03-09 22:17 ` [PATCH 4/4] jrcu: add new stat to /sys/kernel/debug/rcu/rcudata Joe Korty
2011-03-09 22:19 ` [PATCH 1/4] jrcu: remove preempt_enable() tap [resend] Joe Korty
2011-03-12 14:36 ` [PATCH] An RCU for SMP with a single CPU garbage collector Paul E. McKenney
2011-03-13 1:25 ` Joe Korty
2011-03-13 6:09 ` Paul E. McKenney
[not found] <757455806.950179.1289232791283.JavaMail.root@sz0076a.westchester.pa.mail.comcast.net>
2010-11-08 16:15 ` [PATCH] a local-timer-free version of RCU houston.jim
2010-11-08 19:52 ` Paul E. McKenney
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