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perf stat: Support 'percore' event qualifier

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With this patch, we can use the 'percore' event qualifier in perf-stat.

  root@skl:/tmp# perf stat -e cpu/event=0,umask=0x3,percore=1/,cpu/event=0,umask=0x3/ -a -A -I1000
    1.000773050 S0-C0   98,352,832 cpu/event=0,umask=0x3,percore=1/  (50.01%)
    1.000773050 S0-C1  103,763,057 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 S0-C2  196,776,995 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 S0-C3  176,493,779 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 CPU0    47,699,641 cpu/event=0,umask=0x3/            (50.02%)
    1.000773050 CPU1    49,052,451 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU2   102,771,422 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU3   100,784,662 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU4    43,171,342 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU5    54,152,158 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU6    93,618,410 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU7    74,477,589 cpu/event=0,umask=0x3/            (49.99%)

In this example, we count the event 'ref-cycles' per-core and per-CPU in
one perf stat command-line. From the output, we can see:

  S0-C0 = CPU0 + CPU4
  S0-C1 = CPU1 + CPU5
  S0-C2 = CPU2 + CPU6
  S0-C3 = CPU3 + CPU7

So the result is expected (tiny difference is ignored).

Note that, the 'percore' event qualifier needs to use with option '-A'.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1555077590-27664-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao
2019-04-12 21:59:49 +08:00
committed by Arnaldo Carvalho de Melo
parent 40480a8136
commit 4fc4d8dfa0
4 changed files with 69 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
tools/perf/util/stat-display.c
View File

@@ -88,9 +88,17 @@ static void aggr_printout(struct perf_stat_config *config,
config->csv_sep);
break;
case AGGR_NONE:
fprintf(config->output, "CPU%*d%s",
config->csv_output ? 0 : -4,
perf_evsel__cpus(evsel)->map[id], config->csv_sep);
if (evsel->percore) {
fprintf(config->output, "S%d-C%*d%s",
cpu_map__id_to_socket(id),
config->csv_output ? 0 : -5,
cpu_map__id_to_cpu(id), config->csv_sep);
} else {
fprintf(config->output, "CPU%*d%s ",
config->csv_output ? 0 : -5,
perf_evsel__cpus(evsel)->map[id],
config->csv_sep);
}
break;
case AGGR_THREAD:
fprintf(config->output, "%*s-%*d%s",
@@ -1103,6 +1111,30 @@ static void print_footer(struct perf_stat_config *config)
"the same PMU. Try reorganizing the group.\n");
}
static void print_percore(struct perf_stat_config *config,
struct perf_evsel *counter, char *prefix)
{
bool metric_only = config->metric_only;
FILE *output = config->output;
int s;
bool first = true;
if (!(config->aggr_map || config->aggr_get_id))
return;
for (s = 0; s < config->aggr_map->nr; s++) {
if (prefix && metric_only)
fprintf(output, "%s", prefix);
print_counter_aggrdata(config, counter, s,
prefix, metric_only,
&first);
}
if (metric_only)
fputc('\n', output);
}
void
perf_evlist__print_counters(struct perf_evlist *evlist,
struct perf_stat_config *config,
@@ -1153,7 +1185,10 @@ perf_evlist__print_counters(struct perf_evlist *evlist,
print_no_aggr_metric(config, evlist, prefix);
else {
evlist__for_each_entry(evlist, counter) {
print_counter(config, counter, prefix);
if (counter->percore)
print_percore(config, counter, prefix);
else
print_counter(config, counter, prefix);
}
}
break;