Commit 73643bb6 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf sched map: Display only given cpus 



Introducing --cpus option that will display only given cpus. Could be
used together with color-cpus option.

  $ perf sched map  --cpus 0,1
        *A0   309999.786924 secs A0 => rcu_sched:7
        *.    309999.786930 secs
    *B0  .    309999.786931 secs B0 => rcuos/2:25
     B0 *A0   309999.786947 secs

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460467771-26532-9-git-send-email-jolsa@kernel.org


[ Added entry to man page ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent cf294f24

tools/perf/Documentation/perf-sched.txt

+3 −0
Original line number Diff line number Diff line
@@ -57,6 +57,9 @@ OPTIONS for 'perf sched map' 
	Show only CPUs with activity. Helps visualizing on high core

	count systems.



--cpus::

	Show just entries with activities for the given CPUs.



--color-cpus::

	Highlight the given cpus.

tools/perf/builtin-sched.c

+23 −0
Original line number Diff line number Diff line
@@ -135,6 +135,8 @@ struct perf_sched_map { 
	const char		*color_pids_str;

	struct cpu_map		*color_cpus;

	const char		*color_cpus_str;

	struct cpu_map		*cpus;

	const char		*cpus_str;

};



struct perf_sched {
@@ -1469,6 +1471,9 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, 
		if (curr_thread && thread__has_color(curr_thread))

			pid_color = COLOR_PIDS;



		if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu))

			continue;



		if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu))

			cpu_color = COLOR_CPUS;
@@ -1483,6 +1488,9 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, 
			color_fprintf(stdout, color, "   ");

	}



	if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu))

		goto out;



	color_fprintf(stdout, color, "  %12.6f secs ", (double)timestamp/1e9);

	if (new_shortname) {

		const char *pid_color = color;
@@ -1497,6 +1505,7 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel, 
	if (sched->map.comp && new_cpu)

		color_fprintf(stdout, color, " (CPU %d)", this_cpu);



out:

	color_fprintf(stdout, color, "\n");



	thread__put(sched_in);
@@ -1756,6 +1765,8 @@ static int perf_sched__lat(struct perf_sched *sched) 


static int setup_map_cpus(struct perf_sched *sched)

{

	struct cpu_map *map;



	sched->max_cpu  = sysconf(_SC_NPROCESSORS_CONF);



	if (sched->map.comp) {
@@ -1764,6 +1775,16 @@ static int setup_map_cpus(struct perf_sched *sched) 
			return -1;

	}



	if (!sched->map.cpus_str)

		return 0;



	map = cpu_map__new(sched->map.cpus_str);

	if (!map) {

		pr_err("failed to get cpus map from %s\n", sched->map.cpus_str);

		return -1;

	}



	sched->map.cpus = map;

	return 0;

}
@@ -1971,6 +1992,8 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused) 
		   "highlight given pids in map"),

	OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus",

                    "highlight given CPUs in map"),

	OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus",

                    "display given CPUs in map"),

	OPT_END()

	};

	const char * const latency_usage[] = {

CRA Git | Maintained and supported by SUSTech CRA and CCSE