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

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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2019-07-30 11:20:55 -03:00
parent 57fc032ad6
commit 61a461fcbd
1 changed files with 3 additions and 0 deletions
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3
tools/perf/perf.c
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@ -441,6 +441,9 @@ 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;