The parse_single_tracepoint_event() was setting some attributes
  before it validated the event was indeed a tracepoint event. This
  caused problems with other initialization routines like in the
  builtin-top.c module whereby sample_period is not set if not 0.

  Signed-off-by: Stephane Eranian <eranian@google.com>
--
 parse-events.c |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 3b4ec67..82b8b7f 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -418,12 +418,6 @@ parse_single_tracepoint_event(char *sys_name,
 	u64 id;
 	int fd;
 
-	attr->sample_type |= PERF_SAMPLE_RAW;
-	attr->sample_type |= PERF_SAMPLE_TIME;
-	attr->sample_type |= PERF_SAMPLE_CPU;
-
-	attr->sample_period = 1;
-
 	snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path,
 		 sys_name, evt_name);
 
@@ -442,6 +436,13 @@ parse_single_tracepoint_event(char *sys_name,
 	attr->type = PERF_TYPE_TRACEPOINT;
 	*strp = evt_name + evt_length;
 
+	attr->sample_type |= PERF_SAMPLE_RAW;
+	attr->sample_type |= PERF_SAMPLE_TIME;
+	attr->sample_type |= PERF_SAMPLE_CPU;
+
+	attr->sample_period = 1;
+
+
 	return EVT_HANDLED;
 }
 
--
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