From: Arnaldo Carvalho de Melo Date: Tue, 30 Jul 2019 14:20:55 +0000 (-0300) Subject: perf config: Honour $PERF_CONFIG env var to specify alternate .perfconfig X-Git-Tag: v5.4-rc1~177^2~20^2~26 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=61a461fcbd62d42c29a1ea6a9cc3838ad9f49401;p=linux.git perf config: Honour $PERF_CONFIG env var to specify alternate .perfconfig 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 Cc: Jiri Olsa Cc: Luis Cláudio Gonçalves Cc: Namhyung Kim Cc: Taeung Song Fixes: 078006012401 ("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 --- diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 97e2628ea5dd..d4e4d53e8b44 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -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;