linux-kernel - Re: [PATCH v11 05/24] perf config: Document 'buildid.dir' variable in man page

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Message-ID: <20151118000306.GD7062@sejong>
Date:	Wed, 18 Nov 2015 09:03:06 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Taeung Song <treeze.taeung@...il.com>
CC:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH v11 05/24] perf config: Document 'buildid.dir' variable
 in man page

On Tue, Nov 17, 2015 at 10:53:25PM +0900, Taeung Song wrote:
> Explain 'buildid.dir' variable.
> 
> Cc: Jiri Olsa <jolsa@...hat.com>
> Signed-off-by: Taeung Song <treeze.taeung@...il.com>

Acked-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung


> ---
>  tools/perf/Documentation/perf-config.txt | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
> index ec30229..b4ee205 100644
> --- a/tools/perf/Documentation/perf-config.txt
> +++ b/tools/perf/Documentation/perf-config.txt
> @@ -151,6 +151,21 @@ tui.*, gtk.*::
>  	By setting value, TUI or GTK can be enabled or not. But it is needed
>  	that perf detects the required library for them during build.
>  
> +buildid.*::
> +	buildid.dir::
> +		Each executable and shared library in modern distributions comes with a
> +		content based identifier that, if available, will be inserted in a
> +		'perf.data' file header to, at analysis time find what is needed to do
> +		symbol resolution, code annotation, etc.
> +
> +		The recording tools also stores a hard link or copy in a per-user
> +		directory, $HOME/.debug/, of binaries, shared libraries, /proc/kallsyms
> +		and /proc/kcore files to be used at analysis time.
> +
> +		The buildid.dir variable can be used to either change this directory
> +		cache location, or to disable it altogether. If you want to disable it,
> +		set buildid.dir to /dev/null. The default is $HOME/.debug
> +
>  SEE ALSO
>  --------
>  linkperf:perf[1]
> -- 
> 1.9.1
> 
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