Messages in this thread Patch in this message | | | From | Namhyung Kim <> | Subject | [PATCH v2 3/4] perf report: Add --time-filter option | Date | Mon, 3 Jun 2013 13:44:12 +0900 |
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From: Namhyung Kim <namhyung.kim@lge.com>
The --time-filter option is for limiting samples within a range of time. A time range looks like <time1>-<time2> and at most one of them can be omitted. This can be useful when analyzing a part of a huge data only.
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Ahern <dsahern@gmail.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> --- tools/perf/Documentation/perf-report.txt | 7 +++++++ tools/perf/builtin-report.c | 27 +++++++++++++++++++++++++++ 2 files changed, 34 insertions(+)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 66dab7410c1d..04a96f657ca7 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -214,6 +214,13 @@ OPTIONS Do not show entries which have an overhead under that percent. (Default: 0). +-X:: +--time-filter:: + Report samples within a range of time only. A time range can be given + like 'time1-time2' and treated as a start time and end time + respectively. The time format is like "<sec>.<usec>". Either of time1 + or time2 can be omitted. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-annotate[1] diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index ca98d34cd58b..e09e1bdb1401 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -53,6 +53,7 @@ struct perf_report { const char *cpu_list; const char *symbol_filter_str; float min_percent; + u64 time_start, time_end; DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); }; @@ -318,6 +319,12 @@ static int process_sample_event(struct perf_tool *tool, if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap)) return 0; + if (rep->time_start && rep->time_start > sample->time) + return 0; + + if (rep->time_end && rep->time_end < sample->time) + return 0; + if (sort__mode == SORT_MODE__BRANCH) { ret = perf_report__add_branch_hist_entry(tool, &al, sample, evsel, machine); @@ -714,6 +721,24 @@ parse_percent_limit(const struct option *opt, const char *str, return 0; } +static int +parse_time_filter(const struct option *opt, const char *str, + int unset __maybe_unused) +{ + struct perf_report *rep = opt->value; + char *sep; + + sep = strchr(str, '-'); + if (sep == NULL) + return parse_nsec_time(str, &rep->time_start); + else if (sep == str) + return parse_nsec_time(++str, &rep->time_end); + + *sep++ = '\0'; + return parse_nsec_time(str, &rep->time_start) || + parse_nsec_time(sep , &rep->time_end); +} + int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) { struct perf_session *session; @@ -825,6 +850,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused) OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"), OPT_CALLBACK(0, "percent-limit", &report, "percent", "Don't show entries under that percent", parse_percent_limit), + OPT_CALLBACK('X', "time-filter", &report, "time[-time]", + "Only display entries in the time range", parse_time_filter), OPT_END() }; -- 1.7.11.7
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