linux-kernel - Re: [PATCH 14/31] perf build: Rename PERF-FEATURES into FEATURE-DUMP

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Date:	Sun, 22 Mar 2015 11:19:33 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	David Ahern <david.ahern@...cle.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 14/31] perf build: Rename PERF-FEATURES into FEATURE-DUMP

* Arnaldo Carvalho de Melo <acme@...nel.org> wrote:

> From: Jiri Olsa <jolsa@...nel.org>
> 
> Preparing for feature checks separation, moving related stuff under
> 'FEATURE*' namespace.
> 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
> Cc: David Ahern <david.ahern@...cle.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Link: http://lkml.kernel.org/n/tip-v9oo22ra70rrk1dy495a7bjc@git.kernel.org
> Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>

So I think the various capital letter files in $(cwd) are highly 
suboptimal:

 FEATURE-DUMP
 PERF-CFLAGS
 PERF-VERSION-FILE

I think we should standardize on something less pushy (no shouting), 
plus more standardized, more logical, more coherent names, i.e. 
something like:

   .build.features.cache
   .build.cflags
   .build.version

?

.build.features.* would be reserved to the generic feature detection 
machinery.

.build.cflags and .build.version could be used by the perf build - 
hopefully exported to tools/build/ as well in the future! :-)

That way the .gitignore could just ignore .build.* and we'd not have 
to update it much.

Btw., another small nit: could we please do a (git-)rename of 
tools/build/feature/ to tools/build/features/?

Plural is what is used typically for generic frameworks that deal with 
a set of items (features in this case) - for example we have 
tools/tests/, and tools/perf/scripts/, not tools/test/ and 
tools/perf/script/.

Thanks,

	Ingo
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