[tip:perf/core] perf config: Document 'record.build-id' variable in man page

[tip-bot for Taeung Song]

Commit-ID:  a9edec3ce211d776736b35b14b9bd2c0b5ed860b
Gitweb:     http://git.kernel.org/tip/a9edec3ce211d776736b35b14b9bd2c0b5ed860b
Author:     Taeung Song <treeze.taeung@xxxxxxxxx>
AuthorDate: Thu, 4 Feb 2016 18:25:13 +0900
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 4 Feb 2016 11:49:16 -0300

perf config: Document 'record.build-id' variable in man page

Explain 'record.build-id' variable.

Signed-off-by: Taeung Song <treeze.taeung@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1454577913-16401-9-git-send-email-treeze.taeung@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Documentation/perf-config.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index fb1f4a9..c7158bf 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -431,6 +431,14 @@ kmem.*::
 		This option decides which allocator is to be analyzed if neither
 		'--slab' nor '--page' option is used. Default is 'slab'.
 
+record.*::
+	record.build-id::
+		This option can be 'cache', 'no-cache' or 'skip'.
+		'cache' is to post-process data and save/update the binaries into
+		the build-id cache (in ~/.debug). This is the default.
+		But if this option is 'no-cache', it will not update the build-id cache.
+		'skip' skips post-processing and does not update the cache.
+
 SEE ALSO
 --------
 linkperf:perf[1]