From: Song Liu <songliubrav...@fb.com> Synthesizing BPF events is only supported for root. Silent warning msg when non-root user runs perf-record.
Reported-by: David Carrillo-Cisneros <davi...@fb.com> Signed-off-by: Song Liu <songliubrav...@fb.com> Tested-by: David Carrillo-Cisneros <davi...@fb.com> Acked-by: Jiri Olsa <jo...@kernel.org> Cc: kernel-t...@fb.com Link: http://lkml.kernel.org/r/20190204193140.719740-1-songliubrav...@fb.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/bpf-event.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/bpf-event.c b/tools/perf/util/bpf-event.c index 796ef793f4ce..62dda96b0096 100644 --- a/tools/perf/util/bpf-event.c +++ b/tools/perf/util/bpf-event.c @@ -236,8 +236,8 @@ int perf_event__synthesize_bpf_events(struct perf_tool *tool, pr_debug("%s: can't get next program: %s%s", __func__, strerror(errno), errno == EINVAL ? " -- kernel too old?" : ""); - /* don't report error on old kernel */ - err = (errno == EINVAL) ? 0 : -1; + /* don't report error on old kernel or EPERM */ + err = (errno == EINVAL || errno == EPERM) ? 0 : -1; break; } fd = bpf_prog_get_fd_by_id(id); -- 2.19.1
