Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 83e19860 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf script: Allow time to be displayed in nanoseconds 



Add option --ns to display time to 9 decimal places.  That is useful in
some cases, for example when using Intel PT cycle accurate mode.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1443186956-18718-6-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 116f349c

tools/perf/Documentation/perf-script.txt

+3 −0
Original line number Diff line number Diff line
@@ -249,6 +249,9 @@ include::itrace.txt[] 
--full-source-path::

	Show the full path for source files for srcline output.



--ns::

	Use 9 decimal places when displaying time (i.e. show the nanoseconds)



SEE ALSO

--------

linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/builtin-script.c

+7 −1
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ static bool no_callchain; 
static bool			latency_format;

static bool			system_wide;

static bool			print_flags;

static bool			nanosecs;

static const char		*cpu_list;

static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
@@ -415,6 +416,9 @@ static void print_sample_start(struct perf_sample *sample, 
		secs = nsecs / NSECS_PER_SEC;

		nsecs -= secs * NSECS_PER_SEC;

		usecs = nsecs / NSECS_PER_USEC;

		if (nanosecs)

			printf("%5lu.%09llu: ", secs, nsecs);

		else

			printf("%5lu.%06lu: ", secs, usecs);

	}

}
@@ -1695,6 +1699,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused) 
	OPT_BOOLEAN('\0', "show-switch-events", &script.show_switch_events,

		    "Show context switch events (if recorded)"),

	OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),

	OPT_BOOLEAN(0, "ns", &nanosecs,

		    "Use 9 decimal places when displaying time"),

	OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",

			    "Instruction Tracing options",

			    itrace_parse_synth_opts),