Commit 3160565f authored Dec 04, 2013 by David Ahern Committed by Arnaldo Carvalho de Melo Dec 05, 2013

perf trace: Fix summary percentage when processing files



Getting a divide by 0 when events are processed from a file:

   perf trace -i perf.data -s
   ...
   dnsmasq (1684), 10 events, inf%, 0.000 msec

The problem is that the event count is not incremented as events are
processed. With this patch:

   perf trace -i perf.data -s
   ...
   dnsmasq (1684), 10 events, 8.9%, 0.000 msec

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1386211302-31303-4-git-send-email-dsahern@gmail.com


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 9aca7f17

tools/perf/builtin-trace.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -1770,8 +1770,10 @@ static int trace__process_sample(struct perf_tool *tool,
		if (!trace->full_time && trace->base_time == 0)
		trace->base_time = sample->time;

		if (handler)
		if (handler) {
		++trace->nr_events;
		handler(trace, evsel, sample);
		}

		return err;
		}