perf record: Honour --no-time command line option

Time stamps are always implicitely enabled for record currently.  The
old --time/-T option is a nop.

Allow the user to disable timestamps by using --no-time, honouring the
existing option.

The defaults are unchanged.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1406789104-25863-10-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 21a373ebea22..92e5235f5377 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -633,9 +633,12 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
         if (opts->period)
                 perf_evsel__set_sample_bit(evsel, PERIOD);
 
-        if (!perf_missing_features.sample_id_all &&
-            (opts->sample_time || !opts->no_inherit ||
-             target__has_cpu(&opts->target) || per_cpu))
+        /*
+         * When the user explicitely disabled time don't force it here.
+         */
+        if (opts->sample_time &&
+            (!perf_missing_features.sample_id_all &&
+            (!opts->no_inherit || target__has_cpu(&opts->target) || per_cpu)))
                 perf_evsel__set_sample_bit(evsel, TIME);
 
         if (opts->raw_samples && !evsel->no_aux_samples) {