[tip:perf/core] perf config: Document 'kmem.default' variable in man page

[tip-bot for Taeung Song]

Commit-ID:  57f0dafe6a41de6c9d81bc6c403349a261e10fc4
Gitweb:     http://git.kernel.org/tip/57f0dafe6a41de6c9d81bc6c403349a261e10fc4
Author:     Taeung Song <treeze.taeung@xxxxxxxxx>
AuthorDate: Thu, 4 Feb 2016 18:25:12 +0900
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 4 Feb 2016 11:47:39 -0300

perf config: Document 'kmem.default' variable in man page

Explain 'kmem.default' 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/1454577913-16401-8-git-send-email-treeze.taeung@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/Documentation/perf-config.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 99aa72e..fb1f4a9 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -426,6 +426,11 @@ pager.*::
 		When the subcommand is run on stdio, determine whether it uses
 		pager or not based on this value. Default is 'unspecified'.
 
+kmem.*::
+	kmem.default::
+		This option decides which allocator is to be analyzed if neither
+		'--slab' nor '--page' option is used. Default is 'slab'.
+
 SEE ALSO
 --------
 linkperf:perf[1]