From a023283fadef8a3f6916ba2b0c37955d76ffaf4d Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 4 Jan 2022 22:13:07 -0800 Subject: [PATCH] perf stat: Switch aggregation to use for_each loop Tidy up the use of cpu and index to hopefully make the code less error prone. Avoid unused warnings with (void) which will be removed in a later patch. Reviewed-by: James Clark Signed-off-by: Ian Rogers Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ingo Molnar Cc: Jiri Olsa Cc: John Garry Cc: Kajol Jain Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Cc: Riccardo Mancini Cc: Stephane Eranian Cc: Suzuki Poulouse Cc: Vineet Singh Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Cc: zhengjun.xing@intel.com Link: https://lore.kernel.org/r/20220105061351.120843-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/stat-display.c | 48 ++++++++++++++++++++++++------------------ 1 file changed, 27 insertions(+), 21 deletions(-) diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index b0fa81f..efab39a 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -330,8 +330,8 @@ static void print_metric_header(struct perf_stat_config *config, static int first_shadow_cpu(struct perf_stat_config *config, struct evsel *evsel, struct aggr_cpu_id id) { - struct evlist *evlist = evsel->evlist; - int i; + struct perf_cpu_map *cpus; + int cpu, idx; if (config->aggr_mode == AGGR_NONE) return id.core; @@ -339,14 +339,11 @@ static int first_shadow_cpu(struct perf_stat_config *config, if (!config->aggr_get_id) return 0; - for (i = 0; i < evsel__nr_cpus(evsel); i++) { - int cpu2 = evsel__cpus(evsel)->map[i]; - - if (cpu_map__compare_aggr_cpu_id( - config->aggr_get_id(config, evlist->core.cpus, cpu2), - id)) { - return cpu2; - } + cpus = evsel__cpus(evsel); + perf_cpu_map__for_each_cpu(cpu, idx, cpus) { + if (cpu_map__compare_aggr_cpu_id(config->aggr_get_id(config, cpus, idx), + id)) + return cpu; } return 0; } @@ -516,20 +513,23 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int static void aggr_update_shadow(struct perf_stat_config *config, struct evlist *evlist) { - int cpu, s; + int cpu, idx, s; struct aggr_cpu_id s2, id; u64 val; struct evsel *counter; + struct perf_cpu_map *cpus; for (s = 0; s < config->aggr_map->nr; s++) { id = config->aggr_map->map[s]; evlist__for_each_entry(evlist, counter) { + cpus = evsel__cpus(counter); val = 0; - for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) { - s2 = config->aggr_get_id(config, evsel__cpus(counter), cpu); + perf_cpu_map__for_each_cpu(cpu, idx, cpus) { + (void)cpu; + s2 = config->aggr_get_id(config, cpus, idx); if (!cpu_map__compare_aggr_cpu_id(s2, id)) continue; - val += perf_counts(counter->counts, cpu, 0)->val; + val += perf_counts(counter->counts, idx, 0)->val; } perf_stat__update_shadow_stats(counter, val, first_shadow_cpu(config, counter, id), @@ -634,18 +634,21 @@ static void aggr_cb(struct perf_stat_config *config, struct evsel *counter, void *data, bool first) { struct aggr_data *ad = data; - int cpu; + int idx, cpu; + struct perf_cpu_map *cpus; struct aggr_cpu_id s2; - for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) { + cpus = evsel__cpus(counter); + perf_cpu_map__for_each_cpu(cpu, idx, cpus) { struct perf_counts_values *counts; - s2 = config->aggr_get_id(config, evsel__cpus(counter), cpu); + (void)cpu; + s2 = config->aggr_get_id(config, cpus, idx); if (!cpu_map__compare_aggr_cpu_id(s2, ad->id)) continue; if (first) ad->nr++; - counts = perf_counts(counter->counts, cpu, 0); + counts = perf_counts(counter->counts, idx, 0); /* * When any result is bad, make them all to give * consistent output in interval mode. @@ -1208,10 +1211,13 @@ static void print_percore_thread(struct perf_stat_config *config, { int s; struct aggr_cpu_id s2, id; + struct perf_cpu_map *cpus; bool first = true; + int idx, cpu; - for (int i = 0; i < evsel__nr_cpus(counter); i++) { - s2 = config->aggr_get_id(config, evsel__cpus(counter), i); + cpus = evsel__cpus(counter); + perf_cpu_map__for_each_cpu(cpu, idx, cpus) { + s2 = config->aggr_get_id(config, cpus, idx); for (s = 0; s < config->aggr_map->nr; s++) { id = config->aggr_map->map[s]; if (cpu_map__compare_aggr_cpu_id(s2, id)) @@ -1220,7 +1226,7 @@ static void print_percore_thread(struct perf_stat_config *config, print_counter_aggrdata(config, counter, s, prefix, false, - &first, i); + &first, cpu); } } -- 2.7.4