linux-kernel - Re: [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4)

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Message-ID: <CANaxB-xZ+KDZGMb8G1s5q+R_jzdWbP_FFxiGR=s4L90_tUqNjQ@mail.gmail.com>
Date:	Tue, 12 Jun 2012 17:15:32 +0400
From:	Andrew Wagin <avagin@...il.com>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Arun Sharma <asharma@...com>, Oleg Strikov <OSTRIKOV@...dia.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC] [PATCH 0/5] Teach perf tool to profile sleep times (V4)

Hello,

> So I really don't like this stuff either.. :-)
>
> Mostly because it adds very similar stuff to what's already there and
> then doesn't try and consolidate things.
>
> And partly because you're measuring the 'wrong' thing, the delay between
> sched-out and sched-in includes a number of things, only one part of
> that is the delay due to blocking.
>
> And as a result you need that hideous prev_state crap.
>

Yes, you are right.

>
>
> Would something like the below work?

Yes, I like it. Are you going to commit this? Thank for this work.
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