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Subject[RFC 2/4] perf sched: Add template code for schedstat subcommand
Date
perf sched schedstat will allow user to record the profile with `record`
subcommand and analyse it with `report` subcommand.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
---
tools/perf/builtin-sched.c | 48 +++++++++++++++++++++++++++++++++++++-
1 file changed, 47 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index bc1317d7e106..717bdf113241 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -3504,6 +3504,21 @@ static int __cmd_record(int argc, const char **argv)
return ret;
}

+/* perf.data or any other output file name used by schedstat subcommand (only). */
+const char *output_name;
+
+static int perf_sched__schedstat_record(struct perf_sched *sched __maybe_unused,
+ int argc __maybe_unused,
+ const char **argv __maybe_unused)
+{
+ return 0;
+}
+
+static int perf_sched__schedstat_report(struct perf_sched *sched __maybe_unused)
+{
+ return 0;
+}
+
static const char default_sort_order[] = "avg, max, switch, runtime";
static struct perf_sched perf_sched = {
.tool = {
@@ -3593,6 +3608,13 @@ int cmd_sched(int argc, const char **argv)
OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
OPT_PARENT(sched_options)
};
+ const struct option schedstat_options[] = {
+ OPT_STRING('i', "input", &input_name, "file",
+ "`schedstat report` with input filename"),
+ OPT_STRING('o', "output", &output_name, "file",
+ "`schedstat record` with output filename"),
+ OPT_END()
+ };

const char * const latency_usage[] = {
"perf sched latency [<options>]",
@@ -3610,9 +3632,13 @@ int cmd_sched(int argc, const char **argv)
"perf sched timehist [<options>]",
NULL
};
+ const char *schedstat_usage[] = {
+ "perf sched schedstat {record|report} [<options>]",
+ NULL
+ };
const char *const sched_subcommands[] = { "record", "latency", "map",
"replay", "script",
- "timehist", NULL };
+ "timehist", "schedstat", NULL };
const char *sched_usage[] = {
NULL,
NULL
@@ -3693,6 +3719,26 @@ int cmd_sched(int argc, const char **argv)
return ret;

return perf_sched__timehist(&perf_sched);
+ } else if (!strcmp(argv[0], "schedstat")) {
+ const char *const schedstat_subcommands[] = {"record", "report", NULL};
+
+ argc = parse_options_subcommand(argc, argv, schedstat_options,
+ schedstat_subcommands,
+ schedstat_usage, 0);
+
+ if (argv[0] && !strcmp(argv[0], "record")) {
+ if (argc)
+ argc = parse_options(argc, argv, schedstat_options,
+ schedstat_usage, 0);
+ ret = perf_sched__schedstat_record(&perf_sched, argc, argv);
+ } else if (argv[0] && !strcmp(argv[0], "report")) {
+ if (argc)
+ argc = parse_options(argc, argv, schedstat_options,
+ schedstat_usage, 0);
+ ret = perf_sched__schedstat_report(&perf_sched);
+ } else {
+ usage_with_options(schedstat_usage, schedstat_options);
+ }
} else {
usage_with_options(sched_usage, sched_options);
}
--
2.44.0

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