From 050059e1b1affc080ede9fe691768e2383eb6367 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 17 Oct 2022 19:02:18 -0700 Subject: [PATCH] perf stat: Aggregate per-thread stats using evsel->stats->aggr Per-thread aggregation doesn't use the CPU numbers but the logic should be the same. Initialize cpu_aggr_map separately for AGGR_THREAD and use thread map idx to aggregate counter values. Signed-off-by: Namhyung Kim Acked-by: Ian Rogers Cc: Adrian Hunter Cc: Andi Kleen Cc: Athira Jajeev Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Michael Petlan Cc: Peter Zijlstra Cc: Xing Zhengjun Link: https://lore.kernel.org/r/20221018020227.85905-12-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-stat.c | 31 +++++++++++++++++++++++++++++++ tools/perf/util/stat.c | 24 ++++++++++++++++++++++-- 2 files changed, 53 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index abede56d79b6..6777fef0d56c 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1465,6 +1465,21 @@ static int perf_stat_init_aggr_mode(void) stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); } + if (stat_config.aggr_mode == AGGR_THREAD) { + nr = perf_thread_map__nr(evsel_list->core.threads); + stat_config.aggr_map = cpu_aggr_map__empty_new(nr); + if (stat_config.aggr_map == NULL) + return -ENOMEM; + + for (int s = 0; s < nr; s++) { + struct aggr_cpu_id id = aggr_cpu_id__empty(); + + id.thread_idx = s; + stat_config.aggr_map->map[s] = id; + } + return 0; + } + /* * The evsel_list->cpus is the base we operate on, * taking the highest cpu number to be the size of @@ -1674,6 +1689,22 @@ static int perf_stat_init_aggr_mode_file(struct perf_stat *st) aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); bool needs_sort = stat_config.aggr_mode != AGGR_NONE; + if (stat_config.aggr_mode == AGGR_THREAD) { + int nr = perf_thread_map__nr(evsel_list->core.threads); + + stat_config.aggr_map = cpu_aggr_map__empty_new(nr); + if (stat_config.aggr_map == NULL) + return -ENOMEM; + + for (int s = 0; s < nr; s++) { + struct aggr_cpu_id id = aggr_cpu_id__empty(); + + id.thread_idx = s; + stat_config.aggr_map->map[s] = id; + } + return 0; + } + if (!get_id) return 0; diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index dc075d5a0f72..5b04c9d16156 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -422,6 +422,24 @@ process_counter_values(struct perf_stat_config *config, struct evsel *evsel, evsel__compute_deltas(evsel, cpu_map_idx, thread, count); perf_counts_values__scale(count, config->scale, NULL); + if (config->aggr_mode == AGGR_THREAD) { + struct perf_counts_values *aggr_counts = &ps->aggr[thread].counts; + + /* + * Skip value 0 when enabling --per-thread globally, + * otherwise too many 0 output. + */ + if (count->val == 0 && config->system_wide) + return 0; + + ps->aggr[thread].nr++; + + aggr_counts->val += count->val; + aggr_counts->ena += count->ena; + aggr_counts->run += count->run; + goto update; + } + if (ps->aggr) { struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus, cpu_map_idx); struct aggr_cpu_id aggr_id = config->aggr_get_id(config, cpu); @@ -436,8 +454,9 @@ process_counter_values(struct perf_stat_config *config, struct evsel *evsel, ps_aggr->nr++; /* - * When any result is bad, make them all to give - * consistent output in interval mode. + * When any result is bad, make them all to give consistent output + * in interval mode. But per-task counters can have 0 enabled time + * when some tasks are idle. */ if (evsel__count_has_error(evsel, count, config) && !ps_aggr->failed) { ps_aggr->counts.val = 0; @@ -455,6 +474,7 @@ process_counter_values(struct perf_stat_config *config, struct evsel *evsel, } } +update: switch (config->aggr_mode) { case AGGR_THREAD: case AGGR_CORE: -- 2.11.0