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Date: Thu, 25 Nov 2010 09:10:11 +0100
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>,
        Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@elte.hu>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Stephane Eranian <eranian@google.com>, Julia Lawall <julia@diku.dk>,
        Tom Zanussi <tzanussi@gmail.com>, linux-kernel@vger.kernel.org,
        Matt Fleming <matt@console-pimps.org>
Subject: Re: [RFC PATCHv3] perf tools: add event grouping capability to
 "perf stat"
Message-ID: <20101125081008.GE2538@nowhere>
References: <1290650053-3486-1-git-send-email-cjashfor@linux.vnet.ibm.com>
 <1290666760.2072.539.camel@laptop>
 <20101125074629.GC2538@nowhere>
 <1290672009.2072.558.camel@laptop>
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On Thu, Nov 25, 2010 at 09:00:09AM +0100, Peter Zijlstra wrote:
> On Thu, 2010-11-25 at 08:46 +0100, Frederic Weisbecker wrote:
> > > perf record -e task-clock:freq=1000,cycles:period=0
> > 
> > Wouldn't this syntax clash with the flags we have on events already?
> > 
> > the u,k,p flags? 
> 
> From stephane's email (to which you were CC'ed) http://lkml.org/lkml/2010/11/23/303

Right, I'm going look at this.

 
> > $ perf record -e cycles:u:period=100000,instructions:k:freq=1500 -a -- sleep 5
> 
> The parser isn't particularly pretty, maybe its time to think about a parser generator?

May be yeah.
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