From: Zhengjun Xing Date: Fri, 22 Apr 2022 06:56:35 +0000 (+0800) Subject: perf stat: Support hybrid --topdown option X-Git-Tag: v6.1-rc5~1270^2~97 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d7e3c397087fffde68389e7530093dbc2b70c48a;p=platform%2Fkernel%2Flinux-starfive.git perf stat: Support hybrid --topdown option Since for cpu_core or cpu_atom, they have different topdown events groups. For cpu_core, --topdown equals to: "{slots,cpu_core/topdown-retiring/,cpu_core/topdown-bad-spec/, cpu_core/topdown-fe-bound/,cpu_core/topdown-be-bound/, cpu_core/topdown-heavy-ops/,cpu_core/topdown-br-mispredict/, cpu_core/topdown-fetch-lat/,cpu_core/topdown-mem-bound/}" For cpu_atom, --topdown equals to: "{cpu_atom/topdown-retiring/,cpu_atom/topdown-bad-spec/, cpu_atom/topdown-fe-bound/,cpu_atom/topdown-be-bound/}" To simplify the implementation, on hybrid, --topdown is used together with --cputype. If without --cputype, it uses cpu_core topdown events by default. # ./perf stat --topdown -a sleep 1 WARNING: default to use cpu_core topdown events Performance counter stats for 'system wide': retiring bad speculation frontend bound backend bound heavy operations light operations branch mispredict machine clears fetch latency fetch bandwidth memory bound Core bound 4.1% 0.0% 5.1% 90.8% 2.3% 1.8% 0.0% 0.0% 4.2% 0.9% 9.9% 81.0% 1.002624229 seconds time elapsed # ./perf stat --topdown -a --cputype atom sleep 1 Performance counter stats for 'system wide': retiring bad speculation frontend bound backend bound 13.5% 0.1% 31.2% 55.2% 1.002366987 seconds time elapsed Reviewed-by: Kan Liang Signed-off-by: Xing Zhengjun Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20220422065635.767648-3-zhengjun.xing@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 5958bfd..1b96636 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -1867,11 +1867,23 @@ static int add_default_attributes(void) unsigned int max_level = 1; char *str = NULL; bool warn = false; + const char *pmu_name = "cpu"; if (!force_metric_only) stat_config.metric_only = true; - if (pmu_have_event("cpu", topdown_metric_L2_attrs[5])) { + if (perf_pmu__has_hybrid()) { + if (!evsel_list->hybrid_pmu_name) { + pr_warning("WARNING: default to use cpu_core topdown events\n"); + evsel_list->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu("core"); + } + + pmu_name = evsel_list->hybrid_pmu_name; + if (!pmu_name) + return -1; + } + + if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) { metric_attrs = topdown_metric_L2_attrs; max_level = 2; } @@ -1882,10 +1894,11 @@ static int add_default_attributes(void) } else if (!stat_config.topdown_level) stat_config.topdown_level = max_level; - if (topdown_filter_events(metric_attrs, &str, 1) < 0) { + if (topdown_filter_events(metric_attrs, &str, 1, pmu_name) < 0) { pr_err("Out of memory\n"); return -1; } + if (metric_attrs[0] && str) { if (!stat_config.interval && !stat_config.metric_only) { fprintf(stat_config.output, @@ -1909,10 +1922,12 @@ static int add_default_attributes(void) } if (topdown_filter_events(topdown_attrs, &str, - arch_topdown_check_group(&warn)) < 0) { + arch_topdown_check_group(&warn), + pmu_name) < 0) { pr_err("Out of memory\n"); return -1; } + if (topdown_attrs[0] && str) { struct parse_events_error errinfo; if (warn) diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c index ee6f034..924183d 100644 --- a/tools/perf/util/stat.c +++ b/tools/perf/util/stat.c @@ -116,7 +116,9 @@ static void perf_stat_evsel_id_init(struct evsel *evsel) /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */ for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) { - if (!strcmp(evsel__name(evsel), id_str[i])) { + if (!strcmp(evsel__name(evsel), id_str[i]) || + (strstr(evsel__name(evsel), id_str[i]) && evsel->pmu_name + && strstr(evsel__name(evsel), evsel->pmu_name))) { ps->id = i; break; } diff --git a/tools/perf/util/topdown.c b/tools/perf/util/topdown.c index 1081b20..a369f84 100644 --- a/tools/perf/util/topdown.c +++ b/tools/perf/util/topdown.c @@ -1,18 +1,24 @@ // SPDX-License-Identifier: GPL-2.0 #include #include "pmu.h" +#include "pmu-hybrid.h" #include "topdown.h" -int topdown_filter_events(const char **attr, char **str, bool use_group) +int topdown_filter_events(const char **attr, char **str, bool use_group, + const char *pmu_name) { int off = 0; int i; int len = 0; char *s; + bool is_hybrid = perf_pmu__is_hybrid(pmu_name); for (i = 0; attr[i]; i++) { - if (pmu_have_event("cpu", attr[i])) { - len += strlen(attr[i]) + 1; + if (pmu_have_event(pmu_name, attr[i])) { + if (is_hybrid) + len += strlen(attr[i]) + strlen(pmu_name) + 3; + else + len += strlen(attr[i]) + 1; attr[i - off] = attr[i]; } else off++; @@ -30,7 +36,10 @@ int topdown_filter_events(const char **attr, char **str, bool use_group) if (use_group) *s++ = '{'; for (i = 0; attr[i]; i++) { - strcpy(s, attr[i]); + if (!is_hybrid) + strcpy(s, attr[i]); + else + sprintf(s, "%s/%s/", pmu_name, attr[i]); s += strlen(s); *s++ = ','; } diff --git a/tools/perf/util/topdown.h b/tools/perf/util/topdown.h index 2f0d0b8..118e752 100644 --- a/tools/perf/util/topdown.h +++ b/tools/perf/util/topdown.h @@ -7,6 +7,7 @@ bool arch_topdown_check_group(bool *warn); void arch_topdown_group_warn(void); bool arch_topdown_sample_read(struct evsel *leader); -int topdown_filter_events(const char **attr, char **str, bool use_group); +int topdown_filter_events(const char **attr, char **str, bool use_group, + const char *pmu_name); #endif