linux-kernel - Re: [BUG] perf stat: useless output for raw events with new event parser

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Date:	Mon, 23 Apr 2012 12:55:25 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>, mingo@...e.hu,
	David Ahern <dsahern@...il.com>,
	Robert Richter <robert.richter@....com>,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: [BUG] perf stat: useless output for raw events with new event
 parser

On Mon, Apr 23, 2012 at 12:48:52PM +0200, Peter Zijlstra wrote:
> On Mon, 2012-04-23 at 12:45 +0200, Stephane Eranian wrote:
> > Hi,
> > 
> > With the new event parser, one can express raw events field by field:
> > 
> > $ perf stat -e cpu/event=0x3c,umask=0x0/,cpu/event=0xc5,umask=0x0/ noploop 1
> > 
> > The problem with this is that the output of perf stat becomes useless:
> > 
> > $ perf stat -e cpu/event=0x3c,umask=0x0/,cpu/event=0xc5,umask=0x0/ noploop 1
> > noploop for 1 seconds
> > 
> >  Performance counter stats for 'noploop 1':
> > 
> >         2395038678 pmu
> >             10787 pmu
> >                        ^^^^^^
> >        1.000802603 seconds time elapsed
> 
> Yeah, I already complained about that.. Jolsa proposed adding a name=
> parameter so you could explicitly name your events. I think I've seen a
> patch adding that, but can't atm seem to locate it.

it's waiting in here:
https://lkml.org/lkml/2012/4/15/74

I already talked to Arnaldo and I need to resend this serie,
due to another changes that are yet about to get into tip tree..
Once it's in, I'll resend ;)

jirka
> 
> Jiri?
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