Commit-ID: 83e1986032dfcd3f9e9fc0d06e11d9153edae19b
Gitweb: http://git.kernel.org/tip/83e1986032dfcd3f9e9fc0d06e11d9153edae19b
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Fri, 25 Sep 2015 16:15:36 +0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 28 Sep 2015 16:46:05 -0300
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: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1443186956-18718-6-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/Documentation/perf-script.txt | 3 +++
tools/perf/builtin-script.c | 8 +++++++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index dc3ec78..b3b42f9 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -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],
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 284a76e..0928439 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -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);
@@ -415,7 +416,10 @@ static void print_sample_start(struct perf_sample *sample,
secs = nsecs / NSECS_PER_SEC;
nsecs -= secs * NSECS_PER_SEC;
usecs = nsecs / NSECS_PER_USEC;
- printf("%5lu.%06lu: ", secs, usecs);
+ 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),
--
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