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From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Frederic Weisbecker <fweisbec@gmail.com>
Subject: Re: [PATCH 0/5] ftrace: updates for tip
Date: Thu, 22 Jan 2009 10:32:11 +0100	[thread overview]
Message-ID: <20090122093211.GB24758@elte.hu> (raw)
In-Reply-To: <20090121235306.224764198@goodmis.org>


* Steven Rostedt <rostedt@goodmis.org> wrote:

> Ingo,
> 
> These patches are fixes for the wakeup tracer.

That was quick! :-)

> The first is a fix to the empty output you reported to me earlier.
> 
> The second is a fix for the ring buffer to not record updates if it is 
> disabled, otherwised you can get empty traces there too.
> 
> The third is the wakeup change to record all tasks and not just realtime 
> tasks. It adds a wakeup_rt tracer to record only rt tasks.
> 
> The forth is the addition of the scheduling wakeup and sched switch output 
> to the wakeup tracer. This is very helpful data.
> 
> The last is probably the most important, and should go into 29 as well. I 
> never reset the timestamps used to connect the trace stamps in the 
> buffers. This can cause stale stamps to appear and explains some of the 
> really bad timestamps in the buffer I've seen.

okay, i've pulled your fixes into tip/tracing/ftrace and i've cherry-picked 
the timestamp fix over into tracing/urgent.

Thanks,

	Ingo

  parent reply	other threads:[~2009-01-22  9:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-01-21 23:53 Steven Rostedt
2009-01-21 23:53 ` [PATCH 1/5] trace: do not disable wake up tracer on output of trace Steven Rostedt
2009-01-22  8:41   ` Ingo Molnar
2009-01-22  9:29     ` Ingo Molnar
2009-01-22 12:02     ` Steven Rostedt
2009-01-22 12:03       ` Ingo Molnar
2009-01-21 23:53 ` [PATCH 2/5] ring-buffer: do not swap if recording is disabled Steven Rostedt
2009-01-21 23:53 ` [PATCH 3/5] trace: separate out rt tasks from wakeup tracer Steven Rostedt
2009-01-21 23:53 ` [PATCH 4/5] wakeup-tracer: show scheduling data in output Steven Rostedt
2009-01-21 23:53 ` [PATCH 5/5] ring-buffer: reset timestamps when ring buffer is reset Steven Rostedt
2009-01-22  9:32 ` Ingo Molnar [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-12-03  4:50 [PATCH 0/5] ftrace: updates for tip Steven Rostedt
2008-12-03  8:11 ` Ingo Molnar
2008-12-02 20:34 [PATCH 0/5] ftrace " Steven Rostedt
2008-12-03  7:57 ` Ingo Molnar

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