From: Peter Zijlstra <peterz@infradead.org>
To: Mike Chan <mike@android.com>
Cc: Florian Mickler <florian@mickler.org>,
John Stultz <john.stultz@linaro.org>,
lkml <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 3/5] scheduler: cpuacct: Enable platform hooks to track cpuusage for CPU frequencies
Date: Tue, 23 Nov 2010 12:35:59 +0100 [thread overview]
Message-ID: <1290512159.2072.392.camel@laptop> (raw)
In-Reply-To: <AANLkTike-bR-fjakyxiFbWvER=BYdDnFSegjOcdsb1qt@mail.gmail.com>
On Mon, 2010-11-22 at 18:05 -0800, Mike Chan wrote:
> This is useful for tracking cpu power per c-group. We split each
> android application into its own c-group and track what cpu speeds and
> how long the cpu spent for each one. Peter we've actually discussed
> this before:
> http://lkml.org/lkml/2010/5/6/301
>
> These patches were discussed with Paul Menage and Balbir Singh back in
> April, as well as on lmkl and the cpufreq mailing lists. These may or
> may not be useful for mainline, I assume anyone wanting to track power
> specific for c-groups would be interested. I'm open for different
> implementations that can help achieve cpu power tracking per-cgroup if
> this particular implementation is controversial, or if you just want
> to help make Android's kernel better.
Right, so Stephane is working on perf-cgroup bits (I saw he recently
posted another version, which I guess I ought to look at soonish).
With that it would be rather simple to use perf to track per-cgroup
power state.
next prev parent reply other threads:[~2010-11-23 11:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-20 2:08 [PATCH 0/5] [RFC] Trivial scheduler related Android patches John Stultz
2010-11-20 2:08 ` [PATCH 1/5] sched: Enable might_sleep before initializing drivers John Stultz
2010-11-20 10:42 ` Peter Zijlstra
2010-11-20 2:08 ` [PATCH 2/5] sched: make task dump print all 15 chars of proc comm John Stultz
2010-11-23 10:21 ` [tip:sched/core] sched: Make " tip-bot for Erik Gilling
2010-11-20 2:08 ` [PATCH 3/5] scheduler: cpuacct: Enable platform hooks to track cpuusage for CPU frequencies John Stultz
2010-11-20 10:48 ` Peter Zijlstra
2010-11-22 5:51 ` Florian Mickler
2010-11-22 10:43 ` Peter Zijlstra
2010-11-22 12:23 ` Florian Mickler
2010-11-23 2:05 ` Mike Chan
2010-11-23 11:35 ` Peter Zijlstra [this message]
2010-11-20 2:08 ` [PATCH 4/5] scheduler: cpuacct: Enable platform callbacks for cpuacct power tracking John Stultz
2010-11-20 2:08 ` [PATCH 5/5] sched: use the old min_vruntime when normalizing on dequeue John Stultz
2010-11-20 10:55 ` Peter Zijlstra
2010-11-20 12:33 ` Peter Zijlstra
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