perf evsel: Force sample_type for slave events

Force sample_type setup for slave events in group leader sessions.

We don't get sample for slave events, we make them when delivering group
leader sample. Set the slave event to follow the master sample_type to
ease up report.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190220122800.864-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 684c893ca6bc00822cb9ff1a5c9a3d09cbf7344d..dfe2958e628762c1f089e65b1653fe4dd3c97abe 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -956,6 +956,14 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
                attr->sample_freq    = 0;
                attr->sample_period  = 0;
                attr->write_backward = 0;
+
+               /*
+                * We don't get sample for slave events, we make them
+                * when delivering group leader sample. Set the slave
+                * event to follow the master sample_type to ease up
+                * report.
+                */
+               attr->sample_type = leader->attr.sample_type;
        }
 
        if (opts->no_samples)