linux-kernel - Re: [PATCH V2] clocksource: register cpu notifier to remove timer from dying CPU

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Message-ID: <CAKohpom5w=ZERxjkAyTkJFrGFu7SUMs27jHm=9dSB1dYYk-1Tg@mail.gmail.com>
Date:	Wed, 7 May 2014 18:50:47 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	John Stultz <john.stultz@...aro.org>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	Linaro Networking <linaro-networking@...aro.org>,
	Arvind Chauhan <Arvind.Chauhan@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Jet Chen <jet.chen@...el.com>
Subject: Re: [PATCH V2] clocksource: register cpu notifier to remove timer
 from dying CPU

On 7 May 2014 16:06, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> And if that's the case what do we want should we do with these
> timers (i.e. ones added with add_timer_on or mod_timer_pinned)
> when we try to quiesce a cpu using cpuset.quiesce [1]?

Okay, I thought again and above looked stupid :) .. During isolation
we can't migrate any pinned timers and so these will stay as is.
But we shouldn't change the code (which I changed in my initial
patchset), which migrates away pinned timers as well..

Probably just add a pr_warn() there and mention we are migrating
a pinned timer. That's it.

--
viresh
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