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From: Ingo Molnar <mingo@kernel.org>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Rafael Wysocki <rjw@rjwysocki.net>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	linaro-kernel@lists.linaro.org, linux-pm@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Juri Lelli <Juri.Lelli@arm.com>,
	Robin Randhawa <robin.randhawa@arm.com>,
	Steve Muckle <smuckle.linux@gmail.com>
Subject: Re: [PATCH V2 4/4] cpufreq: schedutil: irq-work and mutex are only used in slow path
Date: Thu, 24 Nov 2016 07:24:05 +0100	[thread overview]
Message-ID: <20161124062405.GA24022@gmail.com> (raw)
In-Reply-To: <20161124061203.GF9376@vireshk-i7>


* Viresh Kumar <viresh.kumar@linaro.org> wrote:

> > * Viresh Kumar <viresh.kumar@linaro.org> wrote:
> > 
> > > Execute the irq-work specific initialization/exit code only when the
> > > fast path isn't available.
> > 
> > Is this an optimization? A correctness fix?
> 
> Its an optimization but yeah I will try to explain a bit more next time.

Thanks!

	Ingo

  reply	other threads:[~2016-11-24  6:24 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-15  8:23 [PATCH V2 0/4] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task Viresh Kumar
2016-11-15  8:23 ` [PATCH V2 1/4] cpufreq: schedutil: Avoid indented labels Viresh Kumar
2016-11-15  8:23 ` [PATCH V2 2/4] cpufreq: schedutil: enable fast switch earlier Viresh Kumar
2016-11-15  8:23 ` [PATCH V2 3/4] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task Viresh Kumar
2016-11-16 15:26   ` Peter Zijlstra
2016-11-24  1:19     ` Rafael J. Wysocki
2016-11-24  4:51   ` Ingo Molnar
2016-11-24  5:10     ` Viresh Kumar
2016-11-15  8:23 ` [PATCH V2 4/4] cpufreq: schedutil: irq-work and mutex are only used in slow path Viresh Kumar
2016-11-24  4:53   ` Ingo Molnar
2016-11-24  6:12     ` Viresh Kumar
2016-11-24  6:24       ` Ingo Molnar [this message]
2016-11-24  3:01 ` [PATCH V2 0/4] cpufreq: schedutil: move slow path from workqueue to SCHED_FIFO task Steve Muckle
2016-11-24  4:04   ` Viresh Kumar

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