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perf config: Honour $PERF_CONFIG env var to specify alternate .perfconfig

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[ Upstream commit 61a461fcbd62d42c29a1ea6a9cc3838ad9f49401 ]

We had this comment in Documentation/perf_counter/config.c, i.e. since
when we got this from the git sources, but never really did that
getenv("PERF_CONFIG"), do it now as I need to disable whatever
~/.perfconfig root has so that tests parsing tool output are done for
the expected default output or that we specify an alternate config file
that when read will make the tools produce expected output.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Taeung Song <treeze.taeung@gmail.com>
Fixes: 0780060124 ("perf_counter tools: add in basic glue from Git")
Link: https://lkml.kernel.org/n/tip-jo209zac9rut0dz1rqvbdlgm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-07-30 11:20:55 -03:00 committed by Greg Kroah-Hartman
parent db751f6d52
commit 96b61fe7a5
1 changed files with 3 additions and 0 deletions
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3
tools/perf/perf.c
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@ -439,6 +439,9 @@ int main(int argc, const char **argv)
srandom(time(NULL));
/* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
config_exclusive_filename = getenv("PERF_CONFIG");
err = perf_config(perf_default_config, NULL);
if (err)
return err;