perf evsel: Improve tracepoint constructor setup

It needs to properly set the sample_type, sample_period and the KVM
related perf_event_attr fields.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 00936ad29ff2..2467eaf2968f 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -117,14 +117,18 @@ struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name, int idx)
 
         if (evsel != NULL) {
                 struct perf_event_attr attr = {
-                        .type = PERF_TYPE_TRACEPOINT,
+                        .type          = PERF_TYPE_TRACEPOINT,
+                        .sample_type   = (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
+                                          PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD),
                 };
 
                 evsel->tp_format = event_format__new(sys, name);
                 if (evsel->tp_format == NULL)
                         goto out_free;
 
+                event_attr_init(&attr);
                 attr.config = evsel->tp_format->id;
+                attr.sample_period = 1;
                 perf_evsel__init(evsel, &attr, idx);
                 evsel->name = evsel->tp_format->name;
         }