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: Jiri 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: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -57,6 +57,9 @@ OPTIONS for 'perf sched map'
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Show only CPUs with activity. Helps visualizing on high core
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count systems.
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--cpus::
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Show just entries with activities for the given CPUs.
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--color-cpus::
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Highlight the given cpus.
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@ -135,6 +135,8 @@ struct perf_sched_map {
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const char *color_pids_str;
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struct cpu_map *color_cpus;
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const char *color_cpus_str;
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struct cpu_map *cpus;
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const char *cpus_str;
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};
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struct perf_sched {
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@ -1469,6 +1471,9 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
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if (curr_thread && thread__has_color(curr_thread))
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pid_color = COLOR_PIDS;
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if (sched->map.cpus && !cpu_map__has(sched->map.cpus, cpu))
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continue;
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if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu))
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cpu_color = COLOR_CPUS;
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@ -1483,6 +1488,9 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
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color_fprintf(stdout, color, " ");
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}
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if (sched->map.cpus && !cpu_map__has(sched->map.cpus, this_cpu))
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goto out;
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color_fprintf(stdout, color, " %12.6f secs ", (double)timestamp/1e9);
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if (new_shortname) {
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const char *pid_color = color;
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@ -1497,6 +1505,7 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
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if (sched->map.comp && new_cpu)
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color_fprintf(stdout, color, " (CPU %d)", this_cpu);
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out:
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color_fprintf(stdout, color, "\n");
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thread__put(sched_in);
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@ -1756,6 +1765,8 @@ static int perf_sched__lat(struct perf_sched *sched)
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static int setup_map_cpus(struct perf_sched *sched)
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{
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struct cpu_map *map;
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sched->max_cpu = sysconf(_SC_NPROCESSORS_CONF);
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if (sched->map.comp) {
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@ -1764,6 +1775,16 @@ static int setup_map_cpus(struct perf_sched *sched)
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return -1;
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}
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if (!sched->map.cpus_str)
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return 0;
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map = cpu_map__new(sched->map.cpus_str);
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if (!map) {
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pr_err("failed to get cpus map from %s\n", sched->map.cpus_str);
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return -1;
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}
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sched->map.cpus = map;
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return 0;
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}
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@ -1971,6 +1992,8 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
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"highlight given pids in map"),
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OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus",
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"highlight given CPUs in map"),
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OPT_STRING(0, "cpus", &sched.map.cpus_str, "cpus",
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"display given CPUs in map"),
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OPT_END()
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};
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const char * const latency_usage[] = {
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