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From: Arun Sharma <asharma@fb.com>
To: Andrew Vagin <avagin@openvz.org>
Cc: linux-kernel@vger.kernel.org,
	Steven Rostedt <rostedt@goodmis.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Paul Mackerras <paulus@samba.org>,
	Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: Re: [PATCH 2/4] trace: prepare to collect call chains of non-current task.
Date: Fri, 14 Oct 2011 12:12:27 -0700	[thread overview]
Message-ID: <20111014191227.GB23666@dev1756.snc6.facebook.com> (raw)
In-Reply-To: <1317052535-1765247-3-git-send-email-avagin@openvz.org>

On Mon, Sep 26, 2011 at 07:55:33PM +0400, Andrew Vagin wrote:
> This patch adds argument "task" to all functions between perf_tp_event()
> and perf_callchain(). All logic is in the next patch.
> 
> We need "task" and "regs" simultaneously, because regs contains
> state of current task, before it entered in perf code. Task contains
> pointer to task_struct and it will be used for collecting call chains
> and filling event data, if task isn't current.
> 
> Signed-off-by: Andrew Vagin <avagin@openvz.org>

Acked-by: Arun Sharma <asharma@fb.com>


  parent reply	other threads:[~2011-10-14 19:32 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-26 15:55 [PATCH 0/4] trace: add ability " Andrew Vagin
2011-09-26 15:55 ` [PATCH 1/4] perf: fix counter of ftrace events Andrew Vagin
2011-10-14 19:11   ` Arun Sharma
2011-09-26 15:55 ` [PATCH 2/4] trace: prepare to collect call chains of non-current task Andrew Vagin
2011-09-27 14:02   ` Peter Zijlstra
2011-10-14 19:12   ` Arun Sharma [this message]
2011-09-26 15:55 ` [PATCH 3/4] trace: add ability to collect call chain " Andrew Vagin
2011-09-27 14:05   ` Peter Zijlstra
2011-09-27 20:55     ` Frederic Weisbecker
2011-09-28 13:53       ` Andrew Vagin
2011-12-08  2:02       ` Arun Sharma
2011-12-09 11:07         ` Andrey Vagin
2011-12-14 20:14           ` Arun Sharma
2011-12-15 15:19             ` Andrew Vagin
2011-12-15 19:08               ` Arun Sharma
2011-12-16  0:15                 ` Arun Sharma
2011-09-26 15:55 ` [PATCH 4/4] events: sched_stat_template saves call chains of a target task Andrew Vagin

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