Commit-ID: 83e1986032dfcd3f9e9fc0d06e11d9153edae19b Gitweb: http://git.kernel.org/tip/83e1986032dfcd3f9e9fc0d06e11d9153edae19b Author: Adrian Hunter <adrian.hun...@intel.com> AuthorDate: Fri, 25 Sep 2015 16:15:36 +0300 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> 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.hun...@intel.com> Cc: Jiri Olsa <jo...@redhat.com> Link: http://lkml.kernel.org/r/1443186956-18718-6-git-send-email-adrian.hun...@intel.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- 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), -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
