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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>
This commit is contained in:
Taeung Song 2016-01-08 20:39:33 +09:00 committed by Arnaldo Carvalho de Melo
parent 3fa9f40718
commit 2733525b8c
1 changed files with 15 additions and 0 deletions
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15
tools/perf/Documentation/perf-config.txt
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@ -154,6 +154,21 @@ tui.*, gtk.*::
will make the TUI be the default for the 'top' subcommand. Those will be 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. 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 SEE ALSO
-------- --------
linkperf:perf[1] linkperf:perf[1]