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authorTaeung Song <treeze.taeung@gmail.com>2016-01-08 20:39:33 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-01-26 11:52:47 -0300
commit2733525b8c1a5f9b6e55338d836b835c9c698913 (patch)
tree9c56a173c0e3fec2c2676b0b8339ef93d4de1fa9 /tools/perf/Documentation
parent3fa9f40718a33d27eb2f4bd36c13318a2d58839d (diff)
downloadlinux-2733525b8c1a5f9b6e55338d836b835c9c698913.tar.gz
perf config: Document 'buildid.dir' variable in man page
Explain 'buildid.dir' variable. Signed-off-by: Taeung Song <treeze.taeung@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1452253193-30502-4-git-send-email-treeze.taeung@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
-rw-r--r--tools/perf/Documentation/perf-config.txt15
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index ccbdb64696a7..a095f0cabf5e 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -154,6 +154,21 @@ tui.*, gtk.*::
will make the TUI be the default for the 'top' subcommand. Those will be
available if the required libs were detected at tool build time.
+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]