On 6/2/13 10:44 PM, Namhyung Kim wrote:
From: Namhyung Kim <namhyung....@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....@lge.com>
Cc: David Ahern <dsah...@gmail.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
Acked-Tested-by: David Ahern <dsah...@gmail.com>
---
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()
};
--
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/
