linux-kernel - Re: [PATCH 25/33] perf, tools: Support events with

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Message-ID: <20121027193258.GB1039@krava.redhat.com>
Date:	Sat, 27 Oct 2012 21:32:58 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com,
	peterz@...radead.org, eranian@...gle.com, mingo@...nel.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 25/33] perf, tools: Support events with - in the name

On Fri, Oct 26, 2012 at 01:30:07PM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> - looks nicer than _, so allow - in the event names. Used for various
> of the arch perfmon and Haswell events.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> ---
>  tools/perf/util/parse-events.l |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
> index c87efc1..ef602f0 100644
> --- a/tools/perf/util/parse-events.l
> +++ b/tools/perf/util/parse-events.l
> @@ -80,7 +80,7 @@ event		[^,{}/]+
>  num_dec		[0-9]+
>  num_hex		0x[a-fA-F0-9]+
>  num_raw_hex	[a-fA-F0-9]+
> -name		[a-zA-Z_*?][a-zA-Z0-9_*?]*
> +name		[a-zA-Z_*?][a-zA-Z0-9\-_*?]*

this breaks cache events parsing since they are '-' separated
and having '-' in 'name' patern will endup with PE_NAME
being matched instead of  PE_NAME_CACHE_* terms

I guess you want '-' being used within 'cpu/..t=v../' terms right?
That could be done via start conditions '%x'

jirka
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