linux-kernel - Re: [PATCH][RFC] Adding information of counts processes acquired how many spinlocks to schedstat

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Date:	Mon, 13 Jul 2009 10:51:19 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc:	a.p.zijlstra@...llo.nl, andi@...stfloor.org, fweisbec@...il.com,
	acme@...hat.com, linux-kernel@...r.kernel.org,
	Jason Baron <jbaron@...hat.com>
Subject: Re: [PATCH][RFC] Adding information of counts processes acquired
	how many spinlocks to schedstat


* Hitoshi Mitake <mitake@....info.waseda.ac.jp> wrote:

> > Yeah, steve broke it, but then Jason fixed it again, but his 
> > patches might not have made it in yet.
> > 
> >   http://lkml.org/lkml/2009/7/6/313
> 
> Wow! I can obtain lock_acquire with Jason's patch,
> 
> % perf stat -e lockdep:lock_acquire sleep 1
> 
>  Performance counter stats for 'sleep 1':
> 
>            1420  lockdep:lock_acquire
> 
>     1.004953591  seconds time elapsed
> 
> I wanted this.
> So I don't have nothing to do.., but thanks Jason!

I gave some review feedback about those patches, see:

   http://lkml.org/lkml/2009/7/13/360

Once they are addressed we can try them in -tip.

	Ingo
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