linux-kernel - Re: [PATCH 2/5] ftrace: remove wakeup functions from sched

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Date:	Thu, 22 May 2008 11:46:40 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	pq@....fi, proski@....org, sandmann@...hat.com,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH 2/5] ftrace: remove wakeup functions from sched_switch
	tracer

On Thu, 2008-05-22 at 00:22 -0400, Steven Rostedt wrote:
> plain text document attachment (ftrace-remove-wakeup-from-sched.patch)
> The added wakeup functions inside the sched_switch tracer dirty the trace
> quite a bit. The sched_switch tracer is used to watch context switches.
> Adding wakeups to this make the flow of this trace much more complex to
> understand.
> 
> Perhaps we can add a way to turn on or off this tracing but for now I'm
> reverting the sched_switch back to its original behavior.

Not liking this - this is very useful.

use grep already.

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