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authorTom Zanussi <tzanussi@gmail.com>2010-05-03 00:14:48 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-03 10:31:48 -0300
commit63e0c7715aab6085faa487d498889f4361dc6542 (patch)
tree3d6923589ed744abeca4e3bb1a6fa512e6e3952b /tools/perf/util/trace-event-info.c
parent090f7204dfdb5d7f18208ea81dfdba845897cedd (diff)
perf: record TRACE_INFO only if using tracepoints and SAMPLE_RAW
The current perf code implicitly assumes SAMPLE_RAW means tracepoints are being used, but doesn't check for that. It happily records the TRACE_INFO even if SAMPLE_RAW is used without tracepoints, but when the perf data is read it won't go any further when it finds TRACE_INFO but no tracepoints, and displays misleading errors. This adds a check for both in perf-record, and won't record TRACE_INFO unless both are true. This at least allows perf report -D to dump raw events, and avoids triggering a misleading error condition in perf trace. It doesn't actually enable the non-tracepoint raw events to be displayed in perf trace, since perf trace currently only deals with tracepoint events. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1272865861.7932.16.camel@tropicana> Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/trace-event-info.c')
-rw-r--r--tools/perf/util/trace-event-info.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 30cd9b575953..0a1fb9d4f3b6 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -487,6 +487,11 @@ get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events)
return nr_tracepoints > 0 ? path.next : NULL;
}
+bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events)
+{
+ return get_tracepoints_path(pattrs, nb_events) ? true : false;
+}
+
int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events)
{
char buf[BUFSIZ];