linux-kernel - Re: [RFC 0/5] perf, tool: uncore related changes

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Message-ID: <20120521082232.GC3591@m.brq.redhat.com>
Date:	Mon, 21 May 2012 10:22:32 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	zheng.z.yan@...el.com
Cc:	a.p.zijlstra@...llo.nl, mingo@...e.hu, andi@...stfloor.org,
	eranian@...gle.com, ming.m.lin@...el.com,
	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	acme@...hat.com
Subject: Re: [RFC 0/5] perf, tool: uncore related changes

missed Arnaldo in CC..

jirka

On Mon, May 21, 2012 at 09:36:48AM +0200, Jiri Olsa wrote:
> hi,
> this patchset is based on parsing fixies I just sent out
> and CC-ed you.
> 
> I found a way to reuse the event parsing grammar for just
> term parsing. I had to make some other changes as well:
> 
>   - we end up with 2 start symbols for event grammar to differentiate
>     between event parsing and terms parsing
> 
>   - we have now 2 diferent structures with parser arguments
>     for each event parsing and terms parsing
> 
>   - I kept the reentrant parser.. it's not needed but I think
>     it's better than non reentrant ;)
>     I'm passing yyscanner instead of yylval and yytext as you did,
>     because you can get yylval and yytext out of yyscanner,
>     also I think it's more generic
> 
>   - added automated tests for terms parsing, but we need automated
>     tests for term aliasing (patch 4/5) .. similar pmu tests as
>     for pmu format parsing
> 
> attached patches:
>   1/5 perf, tool: Use data struct for arg passing in event parse function
>   2/5 perf, tool: Make the event parser reentrantable
>   3/5 perf, tool: Add support to reuse event grammar to parse out terms
>   4/5 perf, tool: Add pmu event alias support
>   5/5 perf, tool: Add automated test for pure terms parsing
> 
> thanks for comments,
> jirka
> ---
>  tools/perf/util/parse-events-test.c |  122 +++++++++++++++++++++++++++-
>  tools/perf/util/parse-events.c      |   71 ++++++++++++++---
>  tools/perf/util/parse-events.h      |   15 +++-
>  tools/perf/util/parse-events.l      |  129 ++++++++++++++++++-----------
>  tools/perf/util/parse-events.y      |   71 ++++++++++++-----
>  tools/perf/util/pmu.c               |  152 +++++++++++++++++++++++++++++++++++
>  tools/perf/util/pmu.h               |   11 +++-
>  7 files changed, 483 insertions(+), 88 deletions(-)
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