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authorJin Yao <yao.jin@linux.intel.com>2019-04-12 21:59:49 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-05-16 14:17:24 -0300
commit4fc4d8dfa056dfd48afe73b9ea3b7570ceb80b9c (patch)
tree6ac8af8fe1ab5768a49d22ba74569acbd41b4f0d /tools/perf/builtin-stat.c
parent40480a8136700d678dc07222c4d7287c89d0c04d (diff)
perf stat: Support 'percore' event qualifier
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>
Diffstat (limited to 'tools/perf/builtin-stat.c')
-rw-r--r--tools/perf/builtin-stat.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index a3c060878faa..24b8e690fb69 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -847,6 +847,18 @@ static int perf_stat__get_core_cached(struct perf_stat_config *config,
return perf_stat__get_aggr(config, perf_stat__get_core, map, idx);
}
+static bool term_percore_set(void)
+{
+ struct perf_evsel *counter;
+
+ evlist__for_each_entry(evsel_list, counter) {
+ if (counter->percore)
+ return true;
+ }
+
+ return false;
+}
+
static int perf_stat_init_aggr_mode(void)
{
int nr;
@@ -867,6 +879,15 @@ static int perf_stat_init_aggr_mode(void)
stat_config.aggr_get_id = perf_stat__get_core_cached;
break;
case AGGR_NONE:
+ if (term_percore_set()) {
+ if (cpu_map__build_core_map(evsel_list->cpus,
+ &stat_config.aggr_map)) {
+ perror("cannot build core map");
+ return -1;
+ }
+ stat_config.aggr_get_id = perf_stat__get_core_cached;
+ }
+ break;
case AGGR_GLOBAL:
case AGGR_THREAD:
case AGGR_UNSET: