linux-kernel - Re: [rfc] perf p4 events aliases

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Message-ID: <20110708152657.GH23657@sun>
Date:	Fri, 8 Jul 2011 19:26:57 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Don Zickus <dzickus@...hat.com>,
	Stephane Eranian <eranian@...gle.com>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [rfc] perf p4 events aliases

On Fri, Jul 08, 2011 at 11:21:13AM -0400, Steven Rostedt wrote:
> On Fri, 2011-07-08 at 11:13 -0400, Don Zickus wrote:
> > On Thu, Jul 07, 2011 at 07:28:49PM +0400, Cyrill Gorcunov wrote:
> > > Hi Don, if you have a chance could you please check if this
> > > patch does a trick for nmi-watchdog and perf top? The idea
> > > is to use aliases as being proposed early.
> > 
> > Hmm, didn't work for me.  The watchdog seems to work but 'perf top' showed
> > nothing (even after 30 seconds).  I tried this on Linus's latest -tip and
> > Ingo's perf/core -tip.  No luck.
> 
> Yeah I did the same. Without the patch, perf top works, with the patch I
> get nothing.
> 

In real it's good that it didn't find alias, since there a potential dead-lock
if event become alternative and alternative then found to be busy, i'm working
on it as well ;)

	Cyrill
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