From: "Frank Ch. Eigler" <fche@redhat.com>
To: Arjan van de Ven <arjan@infradead.org>
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu,
peterz@infradead.org, Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [RFC PATCH] perf_core: provide a kernel-internal interface to get to performance counters
Date: Sat, 26 Sep 2009 12:20:40 -0400 [thread overview]
Message-ID: <20090926162040.GA17819@redhat.com> (raw)
In-Reply-To: <20090926181149.6e5827db@infradead.org>
Hi -
On Sat, Sep 26, 2009 at 06:11:49PM +0200, Arjan van de Ven wrote:
> [...]
> your appearance is not correct. A perf counter is either attached to a
> task, or to a cpu. I use the later.
OK, that explains the "MUST be called from kernel thread" comment --
so that the ->owner and get/put_task_struct in the new create/free
functions all refer to that kernel thread. Thanks.
- FChE
next prev parent reply other threads:[~2009-09-26 16:20 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
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 [this message]
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
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