linux-kernel - Re: [tip:perf/core] perf tools: Fix parsers' rules to dependencies

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Message-ID: <20120414114129.GF24688@gmail.com>
Date:	Sat, 14 Apr 2012 13:41:29 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	hpa@...or.com, paulus@...ba.org, linux-kernel@...r.kernel.org,
	acme@...hat.com, a.p.zijlstra@...llo.nl, jolsa@...hat.com,
	fweisbec@...il.com, tglx@...utronix.de,
	cjashfor@...ux.vnet.ibm.com, mingo@...e.hu
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:perf/core] perf tools: Fix parsers' rules to dependencies


* tip-bot for Jiri Olsa <jolsa@...hat.com> wrote:

> Commit-ID:  024e6c9747bb274c9d744ad52a987a0ebec528a6
> Gitweb:     http://git.kernel.org/tip/024e6c9747bb274c9d744ad52a987a0ebec528a6
> Author:     Jiri Olsa <jolsa@...hat.com>
> AuthorDate: Wed, 11 Apr 2012 12:39:51 +0200
> Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
> CommitDate: Wed, 11 Apr 2012 16:57:09 -0300
> 
> perf tools: Fix parsers' rules to dependencies
> 
> Currently the parsers objects (bison/flex related) are each time perf
> is built. No matter the generated files are already in place, the
> parser generation is executed every time.
> 
> Changing the rules to have proper flex/bison objects generation
> dependencies.
> 
> The parsers code is not rebuilt until the flex/bison source files
> are touched. Also when flex/bison source is changed, only dependent
> objects are rebuilt.

Hm, can I cherry-pick this over into perf/urgent? I see no good 
reason why we should leave the v3.4 version half-broken.

Thanks,

	Ingo
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