From: Peter Zijlstra <peterz@infradead.org>
To: Arjan van de Ven <arjan@infradead.org>
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu,
Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [RFC PATCH] perf_core: provide a kernel-internal interface to get to performance counters
Date: Fri, 25 Sep 2009 13:42:37 +0200 [thread overview]
Message-ID: <1253878957.26976.1.camel@twins> (raw)
In-Reply-To: <20090925122556.2f8bd939@infradead.org>
On Fri, 2009-09-25 at 12:25 +0200, Arjan van de Ven wrote:
> From 5db5cd76f3c16c9f6093f54d1ccfb97d04b9a1ca Mon Sep 17 00:00:00 2001
> From: Arjan van de Ven <arjan@linux.intel.com>
> Date: Fri, 25 Sep 2009 12:20:57 +0200
> Subject: [PATCH] perf_core: provide a kernel-internal interface to get to performance counters
>
> There are reasons for kernel code to ask for, and use, performance counters.
> For example, in CPU freq governors this tends to be a good idea, but there
> are other examples possible as well of course.
>
> This patch adds the needed bits to do enable this functionality; they have been
> tested in an experimental cpufreq driver that I'm working on, and the changes
> are all that I needed to access counters properly.
>
> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Looks fine to me, can go in when we acquire a user.
next prev parent reply other threads:[~2009-09-25 11:41 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-25 10:25 [RFC PATCH] perf_core: provide a kernel-internal interface to get to performance counters Arjan van de Ven
2009-09-25 10:44 ` Frederic Weisbecker
2009-09-25 11:42 ` Peter Zijlstra [this message]
2009-09-26 16:03 ` Frank Ch. Eigler
2009-09-26 16:11 ` Arjan van de Ven
2009-09-26 16:20 ` Frank Ch. Eigler
2009-09-26 18:32 ` K.Prasad
2009-09-26 18:48 ` Arjan van de Ven
2009-10-01 7:25 ` Ingo Molnar
2009-10-01 8:16 ` K.Prasad
2009-10-01 8:53 ` Ingo Molnar
2009-10-01 10:01 ` K.Prasad
2009-10-01 10:28 ` Ingo Molnar
2009-10-04 22:28 ` Frederic Weisbecker
2009-10-05 9:55 ` Ingo Molnar
2009-10-05 10:13 ` Frédéric Weisbecker
2009-10-05 7:53 ` Peter Zijlstra
2009-10-05 8:55 ` Ingo Molnar
2009-10-05 9:24 ` Frédéric Weisbecker
2009-10-05 9:48 ` Ingo Molnar
2009-10-05 10:08 ` Frédéric Weisbecker
2009-11-21 13:36 ` [tip:perf/core] perf/core: Provide " tip-bot for Arjan van de Ven
2010-02-05 15:47 ` [RFC PATCH] perf_core: provide " Christoph Hellwig
2010-02-05 17:59 ` john smith
2010-02-06 6:24 ` Arjan van de Ven
2010-02-06 11:46 ` Frederic Weisbecker
2010-02-06 14:18 ` Peter Zijlstra
2010-02-06 16:08 ` Frederic Weisbecker
2010-02-07 17:01 ` Ingo Molnar
-- strict thread matches above, loose matches on Subject: below --
2010-01-25 5:10 john smith
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1253878957.26976.1.camel@twins \
--to=peterz@infradead.org \
--cc=arjan@infradead.org \
--cc=fweisbec@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.