perf trace: Add option to show full timestamp
Current timestamp shown for output is time relative to firt sample. This
patch adds an option to show the absolute perf_clock timestamp which is
useful when comparing output across commands (e.g., perf-trace to
perf-script).
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1378319865-55695-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 7ce036e..bc21140 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -624,6 +624,7 @@
struct perf_record_opts opts;
struct machine host;
u64 base_time;
+ bool full_time;
FILE *output;
unsigned long nr_events;
struct strlist *ev_qualifier;
@@ -1066,7 +1067,7 @@
if (skip_sample(trace, sample))
return 0;
- if (trace->base_time == 0)
+ if (!trace->full_time && trace->base_time == 0)
trace->base_time = sample->time;
if (handler)
@@ -1195,7 +1196,7 @@
continue;
}
- if (trace->base_time == 0)
+ if (!trace->full_time && trace->base_time == 0)
trace->base_time = sample.time;
if (type != PERF_RECORD_SAMPLE) {
@@ -1433,6 +1434,8 @@
trace__set_duration),
OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+ OPT_BOOLEAN('T', "time", &trace.full_time,
+ "Show full timestamp, not time relative to first start"),
OPT_END()
};
int err;