linux-kernel - Re: [PATCH 1/2] perf tools: add event modifier to request exclusive PMU access

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Message-ID: <20121019152337.GC980@krava.brq.redhat.com>
Date:	Fri, 19 Oct 2012 17:23:37 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"ak@...ux.intel.com" <ak@...ux.intel.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 1/2] perf tools: add event modifier to request exclusive
 PMU access

On Fri, Oct 19, 2012 at 05:17:57PM +0200, Stephane Eranian wrote:
> On Fri, Oct 19, 2012 at 5:13 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> > On Fri, 2012-10-19 at 16:52 +0200, Stephane Eranian wrote:
> >> -modifier_event [ukhpGH]{1,8}
> >> +modifier_event [ukhpGHx]{1,8}
> >
> > wouldn't the max modifier sting length grow by adding another possible
> > modifier?
> 
> That's what I thought too, but then I don't understand why it was at
> eight before and not
> seven: One instance of each letter, + a second for pp (precise=2). Or
> am I missing
> something here?

hm, I think I assumed for some reason that 'ppp' is valid as well

jirka
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