From: Tejun Heo <tj@kernel.org>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
peterz@infradead.org, tglx@linutronix.de,
linux-pm@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH 1/9] workqueue: perform cpu down operations from low priority cpu_notifier()
Date: Fri, 20 Jul 2012 14:58:35 -0700 [thread overview]
Message-ID: <20120720215835.GB6823@google.com> (raw)
In-Reply-To: <20120720215207.GA18841@linux.vnet.ibm.com>
Hello, Paul.
On Fri, Jul 20, 2012 at 02:52:07PM -0700, Paul E. McKenney wrote:
> > Fix it by using different priorities for up and down notifiers - high
> > priority for up operations and low priority for down operations.
>
> Cool!!!
>
> This certainly provides another data point in favor of running down
> notifiers in the opposite order from up notifiers. ;-)
Yeah, I was thinking about that. I don't think converting CPU
notifiers would take a lot of work in terms of both auditing and
converting. We only have several priorities.
> This series passes light rcutorture/hotplug testing, will be testing
> it more.
Great!
--
tejun
next prev parent reply other threads:[~2012-07-20 21:58 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-17 17:12 [PATCHSET] workqueue: reimplement CPU hotplug to keep idle workers Tejun Heo
2012-07-17 17:12 ` [PATCH 1/9] workqueue: perform cpu down operations from low priority cpu_notifier() Tejun Heo
2012-07-20 21:52 ` Paul E. McKenney
2012-07-20 21:58 ` Tejun Heo [this message]
2012-07-21 21:36 ` Paul E. McKenney
2012-07-22 16:43 ` [PATCH] workqueue: fix spurious CPU locality WARN from process_one_work() Tejun Heo
2012-07-22 21:23 ` Paul E. McKenney
2012-07-17 17:12 ` [PATCH 2/9] workqueue: drop CPU_DYING notifier operation Tejun Heo
2012-07-17 17:12 ` [PATCH 3/9] workqueue: ROGUE workers are UNBOUND workers Tejun Heo
2012-07-17 17:12 ` [PATCH 4/9] workqueue: use mutex for global_cwq manager exclusion Tejun Heo
2012-07-17 17:12 ` [PATCH 5/9] workqueue: drop @bind from create_worker() Tejun Heo
2012-07-17 17:12 ` [PATCH 6/9] workqueue: reimplement CPU online rebinding to handle idle workers Tejun Heo
2012-07-17 17:12 ` [PATCH 7/9] workqueue: don't butcher idle workers on an offline CPU Tejun Heo
2012-07-17 17:12 ` [PATCH 8/9] workqueue: remove CPU offline trustee Tejun Heo
2012-07-17 17:12 ` [PATCH 9/9] workqueue: simplify CPU hotplug code Tejun Heo
2012-07-17 18:43 ` [PATCHSET] workqueue: reimplement CPU hotplug to keep idle workers Rafael J. Wysocki
2012-07-17 19:40 ` Tejun Heo
2012-07-20 15:48 ` Peter Zijlstra
2012-07-20 17:02 ` Tejun Heo
2012-07-20 17:21 ` Peter Zijlstra
2012-07-20 17:50 ` Tejun Heo
2012-07-20 18:22 ` Peter Zijlstra
2012-07-20 18:34 ` Tejun Heo
2012-07-20 19:44 ` Rafael J. Wysocki
2012-07-20 19:41 ` Tejun Heo
2012-07-21 6:42 ` Shilimkar, Santosh
2012-07-23 8:38 ` Peter De Schrijver
2012-07-20 16:39 ` Peter Zijlstra
2012-07-20 16:52 ` Tejun Heo
2012-07-20 17:01 ` Peter Zijlstra
2012-07-20 17:08 ` Tejun Heo
2012-07-20 17:19 ` Peter Zijlstra
2012-07-20 17:43 ` Tejun Heo
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