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perf sched map: Color given cpus 

Adding --color-cpus option to display selected cpus with background
color (red by default).  It helps on navigating through the perf sched
map output.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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/1460467771-26532-8-git-send-email-jolsa@kernel.org
[ Added entry to man page ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-04-12 15:29:30 +02:00 committed by Arnaldo Carvalho de Melo
parent a151a37a76
commit cf294f24f8
2 changed files with 36 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
tools/perf/Documentation/perf-sched.txt
View File

@ -57,6 +57,9 @@ OPTIONS for 'perf sched map'
Show only CPUs with activity. Helps visualizing on high core
count systems.
--color-cpus::
Highlight the given cpus.
--color-pids::
Highlight the given pids.

36
tools/perf/builtin-sched.c
View File

@ -125,6 +125,7 @@ struct trace_sched_handler {
};
#define COLOR_PIDS PERF_COLOR_BLUE
#define COLOR_CPUS PERF_COLOR_BG_RED
struct perf_sched_map {
DECLARE_BITMAP(comp_cpus_mask, MAX_CPUS);
@ -132,6 +133,8 @@ struct perf_sched_map {
bool comp;
struct thread_map *color_pids;
const char *color_pids_str;
struct cpu_map *color_cpus;
const char *color_cpus_str;
};
struct perf_sched {
@ -1461,14 +1464,18 @@ static int map_switch_event(struct perf_sched *sched, struct perf_evsel *evsel,
int cpu = sched->map.comp ? sched->map.comp_cpus[i] : i;
struct thread *curr_thread = sched->curr_thread[cpu];
const char *pid_color = color;
const char *cpu_color = color;
if (curr_thread && thread__has_color(curr_thread))
pid_color = COLOR_PIDS;
if (sched->map.color_cpus && cpu_map__has(sched->map.color_cpus, cpu))
cpu_color = COLOR_CPUS;
if (cpu != this_cpu)
color_fprintf(stdout, color, " ");
color_fprintf(stdout, cpu_color, " ");
else
color_fprintf(stdout, color, "*");
color_fprintf(stdout, cpu_color, "*");
if (sched->curr_thread[cpu])
color_fprintf(stdout, pid_color, "%2s ", sched->curr_thread[cpu]->shortname);
@ -1753,7 +1760,8 @@ static int setup_map_cpus(struct perf_sched *sched)
if (sched->map.comp) {
sched->map.comp_cpus = zalloc(sched->max_cpu * sizeof(int));
return sched->map.comp_cpus ? 0 : -1;
if (!sched->map.comp_cpus)
return -1;
}
return 0;
@ -1776,6 +1784,23 @@ static int setup_color_pids(struct perf_sched *sched)
return 0;
}
static int setup_color_cpus(struct perf_sched *sched)
{
struct cpu_map *map;
if (!sched->map.color_cpus_str)
return 0;
map = cpu_map__new(sched->map.color_cpus_str);
if (!map) {
pr_err("failed to get thread map from %s\n", sched->map.color_cpus_str);
return -1;
}
sched->map.color_cpus = map;
return 0;
}
static int perf_sched__map(struct perf_sched *sched)
{
if (setup_map_cpus(sched))
@ -1784,6 +1809,9 @@ static int perf_sched__map(struct perf_sched *sched)
if (setup_color_pids(sched))
return -1;
if (setup_color_cpus(sched))
return -1;
setup_pager();
if (perf_sched__read_events(sched))
return -1;
@ -1941,6 +1969,8 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
"map output in compact mode"),
OPT_STRING(0, "color-pids", &sched.map.color_pids_str, "pids",
"highlight given pids in map"),
OPT_STRING(0, "color-cpus", &sched.map.color_cpus_str, "cpus",
"highlight given CPUs in map"),
OPT_END()
};
const char * const latency_usage[] = {