perf utils: Silence "Couldn't synthesize bpf events" warning for EPERM

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Synthesizing BPF events is only supported for root. Silent warning msg
when non-root user runs perf-record.

Reported-by: David Carrillo-Cisneros <davidca@fb.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Tested-by: David Carrillo-Cisneros <davidca@fb.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: kernel-team@fb.com
Link: http://lkml.kernel.org/r/20190204193140.719740-1-songliubraving@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Song Liu 2019-02-04 11:31:40 -08:00 • committed by Arnaldo Carvalho de Melo

parent 33937e5994

commit 39f4a913d6

1 changed files with 2 additions and 2 deletions

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tools/perf/util/bpf-event.c

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