perf script: Fix event ordering settings to work with older kernels

If we don't use .ordering_requires_timestamps we'll end up trying to order
events with no timestamps when running on older kernels.

Problem introduced in eac23d1c.

After the last three fixes, perf scripting is back working, tested with
new perf userspace on old and new (with sample_id_all) kernels.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Torok Edwin <edwintorok@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 6ef65c04ab9a26ee4ecdbf289d2dd9980b5edc25..43480fd66db7ebed659efe27d0415e8f68882330 100644 (file)
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -117,6 +117,7 @@ static struct perf_event_ops event_ops = {
        .tracing_data = event__process_tracing_data,
        .build_id = event__process_build_id,
        .lost = process_lost_event,
+       .ordering_requires_timestamps = true,
        .ordered_samples = true,
 };