Commit-ID: 54874e3236b834064943c02a647823ab5d97be57
Gitweb: http://git.kernel.org/tip/54874e3236b834064943c02a647823ab5d97be57
Author: Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx>
AuthorDate: Fri, 1 Nov 2013 20:25:46 +0400
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 27 Nov 2013 14:58:36 -0300
perf timechart: Add option to limit number of tasks
Add -n option to specify min. number of tasks to print.
Signed-off-by: Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx>
Acked-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1383323151-19810-3-git-send-email-stfomichev@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/Documentation/perf-timechart.txt | 4 ++++
tools/perf/builtin-timechart.c | 5 ++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
index 3ff8bd4..4373144 100644
--- a/tools/perf/Documentation/perf-timechart.txt
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -54,6 +54,10 @@ $ perf timechart
Written 10.2 seconds of trace to output.svg.
+-n::
+--proc-num::
+ Print task info for at least given number of tasks.
+
SEE ALSO
--------
linkperf:perf-record[1]
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index bb21e57..c352be4 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -41,6 +41,7 @@
#define SUPPORT_OLD_POWER_EVENTS 1
#define PWR_EVENT_EXIT -1
+static int proc_num = 15;
static unsigned int numcpus;
static u64 min_freq; /* Lowest CPU frequency seen */
@@ -955,7 +956,7 @@ static void write_svg_file(const char *filename)
do {
count = determine_display_tasks(thresh);
thresh /= 10;
- } while (!process_filter && thresh && count < 15);
+ } while (!process_filter && thresh && count < proc_num);
open_svg(filename, numcpus, count, first_time, last_time);
@@ -1102,6 +1103,8 @@ int cmd_timechart(int argc, const char **argv,
parse_process),
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
"Look for files with symbols relative to this directory"),
+ OPT_INTEGER('n', "proc-num", &proc_num,
+ "min. number of tasks to print"),
OPT_END()
};
const char * const timechart_usage[] = {
--
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