1 files changed, 88 insertions, 191 deletions

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index fa7c40956d0f..cc9fa48d636f 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -41,7 +41,6 @@
  */
 
 #include "builtin.h"
-#include "perf.h"
 #include "util/cgroup.h"
 #include <subcmd/parse-options.h>
 #include "util/parse-events.h"
@@ -71,6 +70,7 @@
 #include "util/bpf_counter.h"
 #include "util/iostat.h"
 #include "util/pmu-hybrid.h"
+#include "util/util.h"
 #include "asm/bug.h"
 
 #include <linux/time64.h>
@@ -100,71 +100,6 @@
 
 static void print_counters(struct timespec *ts, int argc, const char **argv);
 
-/* Default events used for perf stat -T */
-static const char *transaction_attrs = {
-	"task-clock,"
-	"{"
-	"instructions,"
-	"cycles,"
-	"cpu/cycles-t/,"
-	"cpu/tx-start/,"
-	"cpu/el-start/,"
-	"cpu/cycles-ct/"
-	"}"
-};
-
-/* More limited version when the CPU does not have all events. */
-static const char * transaction_limited_attrs = {
-	"task-clock,"
-	"{"
-	"instructions,"
-	"cycles,"
-	"cpu/cycles-t/,"
-	"cpu/tx-start/"
-	"}"
-};
-
-static const char * topdown_attrs[] = {
-	"topdown-total-slots",
-	"topdown-slots-retired",
-	"topdown-recovery-bubbles",
-	"topdown-fetch-bubbles",
-	"topdown-slots-issued",
-	NULL,
-};
-
-static const char *topdown_metric_attrs[] = {
-	"slots",
-	"topdown-retiring",
-	"topdown-bad-spec",
-	"topdown-fe-bound",
-	"topdown-be-bound",
-	NULL,
-};
-
-static const char *topdown_metric_L2_attrs[] = {
-	"slots",
-	"topdown-retiring",
-	"topdown-bad-spec",
-	"topdown-fe-bound",
-	"topdown-be-bound",
-	"topdown-heavy-ops",
-	"topdown-br-mispredict",
-	"topdown-fetch-lat",
-	"topdown-mem-bound",
-	NULL,
-};
-
-#define TOPDOWN_MAX_LEVEL			2
-
-static const char *smi_cost_attrs = {
-	"{"
-	"msr/aperf/,"
-	"msr/smi/,"
-	"cycles"
-	"}"
-};
-
 static struct evlist	*evsel_list;
 static bool all_counters_use_bpf = true;
 
@@ -246,14 +181,13 @@ static bool cpus_map_matched(struct evsel *a, struct evsel *b)
 
 static void evlist__check_cpu_maps(struct evlist *evlist)
 {
-	struct evsel *evsel, *pos, *leader;
-	char buf[1024];
+	struct evsel *evsel, *warned_leader = NULL;
 
 	if (evlist__has_hybrid(evlist))
 		evlist__warn_hybrid_group(evlist);
 
 	evlist__for_each_entry(evlist, evsel) {
-		leader = evsel__leader(evsel);
+		struct evsel *leader = evsel__leader(evsel);
 
 		/* Check that leader matches cpus with each member. */
 		if (leader == evsel)
@@ -262,19 +196,26 @@ static void evlist__check_cpu_maps(struct evlist *evlist)
 			continue;
 
 		/* If there's mismatch disable the group and warn user. */
-		WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n");
-		evsel__group_desc(leader, buf, sizeof(buf));
-		pr_warning("  %s\n", buf);
-
+		if (warned_leader != leader) {
+			char buf[200];
+
+			pr_warning("WARNING: grouped events cpus do not match.\n"
+				"Events with CPUs not matching the leader will "
+				"be removed from the group.\n");
+			evsel__group_desc(leader, buf, sizeof(buf));
+			pr_warning("  %s\n", buf);
+			warned_leader = leader;
+		}
 		if (verbose > 0) {
+			char buf[200];
+
 			cpu_map__snprint(leader->core.cpus, buf, sizeof(buf));
 			pr_warning("     %s: %s\n", leader->name, buf);
 			cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf));
 			pr_warning("     %s: %s\n", evsel->name, buf);
 		}
 
-		for_each_group_evsel(pos, leader)
-			evsel__remove_from_group(pos, leader);
+		evsel__remove_from_group(evsel, leader);
 	}
 }
 
@@ -489,7 +430,6 @@ static void process_counters(void)
 
 	perf_stat_merge_counters(&stat_config, evsel_list);
 	perf_stat_process_percore(&stat_config, evsel_list);
-	perf_stat_process_shadow_stats(&stat_config, evsel_list);
 }
 
 static void process_interval(void)
@@ -499,7 +439,6 @@ static void process_interval(void)
 	clock_gettime(CLOCK_MONOTONIC, &ts);
 	diff_timespec(&rs, &ts, &ref_time);
 
-	perf_stat__reset_shadow_per_stat(&rt_stat);
 	evlist__reset_aggr_stats(evsel_list);
 
 	if (read_counters(&rs) == 0)
@@ -610,7 +549,7 @@ static void process_evlist(struct evlist *evlist, unsigned int interval)
 	if (evlist__ctlfd_process(evlist, &cmd) > 0) {
 		switch (cmd) {
 		case EVLIST_CTL_CMD_ENABLE:
-			__fallthrough;
+			fallthrough;
 		case EVLIST_CTL_CMD_DISABLE:
 			if (interval)
 				process_interval();
@@ -773,7 +712,7 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx)
 		counter->reset_group = false;
 		if (bpf_counter__load(counter, &target))
 			return -1;
-		if (!evsel__is_bpf(counter))
+		if (!(evsel__is_bperf(counter)))
 			all_counters_use_bpf = false;
 	}
 
@@ -789,7 +728,7 @@ static int __run_perf_stat(int argc, const char **argv, int run_idx)
 
 		if (counter->reset_group || counter->errored)
 			continue;
-		if (evsel__is_bpf(counter))
+		if (evsel__is_bperf(counter))
 			continue;
 try_again:
 		if (create_perf_stat_counter(counter, &stat_config, &target,
@@ -970,7 +909,6 @@ try_again_reset:
 		evlist__copy_prev_raw_counts(evsel_list);
 		evlist__reset_prev_raw_counts(evsel_list);
 		evlist__reset_aggr_stats(evsel_list);
-		perf_stat__reset_shadow_per_stat(&rt_stat);
 	} else {
 		update_stats(&walltime_nsecs_stats, t1 - t0);
 		update_rusage_stats(&ru_stats, &stat_config.ru_data);
@@ -1251,6 +1189,8 @@ static struct option stat_options[] = {
 		       "don't group metric events, impacts multiplexing"),
 	OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge,
 		       "don't try to share events between metrics in a group"),
+	OPT_BOOLEAN(0, "metric-no-threshold", &stat_config.metric_no_threshold,
+		       "don't try to share events between metrics in a group  "),
 	OPT_BOOLEAN(0, "topdown", &topdown_run,
 			"measure top-down statistics"),
 	OPT_UINTEGER(0, "td-level", &stat_config.topdown_level,
@@ -1716,7 +1656,6 @@ static int perf_stat_init_aggr_mode_file(struct perf_stat *st)
  */
 static int add_default_attributes(void)
 {
-	int err;
 	struct perf_event_attr default_attrs0[] = {
 
   { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK		},
@@ -1837,44 +1776,29 @@ static int add_default_attributes(void)
 		return 0;
 
 	if (transaction_run) {
-		struct parse_events_error errinfo;
 		/* Handle -T as -M transaction. Once platform specific metrics
 		 * support has been added to the json files, all architectures
 		 * will use this approach. To determine transaction support
 		 * on an architecture test for such a metric name.
 		 */
-		if (metricgroup__has_metric("transaction")) {
-			return metricgroup__parse_groups(evsel_list, "transaction",
-							 stat_config.metric_no_group,
-							 stat_config.metric_no_merge,
-							 stat_config.user_requested_cpu_list,
-							 stat_config.system_wide,
-							 &stat_config.metric_events);
-		}
-
-		parse_events_error__init(&errinfo);
-		if (pmu_have_event("cpu", "cycles-ct") &&
-		    pmu_have_event("cpu", "el-start"))
-			err = parse_events(evsel_list, transaction_attrs,
-					   &errinfo);
-		else
-			err = parse_events(evsel_list,
-					   transaction_limited_attrs,
-					   &errinfo);
-		if (err) {
-			fprintf(stderr, "Cannot set up transaction events\n");
-			parse_events_error__print(&errinfo, transaction_attrs);
+		if (!metricgroup__has_metric("transaction")) {
+			pr_err("Missing transaction metrics");
+			return -1;
 		}
-		parse_events_error__exit(&errinfo);
-		return err ? -1 : 0;
+		return metricgroup__parse_groups(evsel_list, "transaction",
+						stat_config.metric_no_group,
+						stat_config.metric_no_merge,
+						stat_config.metric_no_threshold,
+						stat_config.user_requested_cpu_list,
+						stat_config.system_wide,
+						&stat_config.metric_events);
 	}
 
 	if (smi_cost) {
-		struct parse_events_error errinfo;
 		int smi;
 
 		if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) {
-			fprintf(stderr, "freeze_on_smi is not supported.\n");
+			pr_err("freeze_on_smi is not supported.");
 			return -1;
 		}
 
@@ -1886,108 +1810,62 @@ static int add_default_attributes(void)
 			smi_reset = true;
 		}
 
-		if (!pmu_have_event("msr", "aperf") ||
-		    !pmu_have_event("msr", "smi")) {
-			fprintf(stderr, "To measure SMI cost, it needs "
-				"msr/aperf/, msr/smi/ and cpu/cycles/ support\n");
+		if (!metricgroup__has_metric("smi")) {
+			pr_err("Missing smi metrics");
 			return -1;
 		}
+
 		if (!force_metric_only)
 			stat_config.metric_only = true;
 
-		parse_events_error__init(&errinfo);
-		err = parse_events(evsel_list, smi_cost_attrs, &errinfo);
-		if (err) {
-			parse_events_error__print(&errinfo, smi_cost_attrs);
-			fprintf(stderr, "Cannot set up SMI cost events\n");
-		}
-		parse_events_error__exit(&errinfo);
-		return err ? -1 : 0;
+		return metricgroup__parse_groups(evsel_list, "smi",
+						stat_config.metric_no_group,
+						stat_config.metric_no_merge,
+						stat_config.metric_no_threshold,
+						stat_config.user_requested_cpu_list,
+						stat_config.system_wide,
+						&stat_config.metric_events);
 	}
 
 	if (topdown_run) {
-		const char **metric_attrs = topdown_metric_attrs;
-		unsigned int max_level = 1;
-		char *str = NULL;
-		bool warn = false;
-		const char *pmu_name = arch_get_topdown_pmu_name(evsel_list, true);
+		unsigned int max_level = metricgroups__topdown_max_level();
+		char str[] = "TopdownL1";
 
 		if (!force_metric_only)
 			stat_config.metric_only = true;
 
-		if (pmu_have_event(pmu_name, topdown_metric_L2_attrs[5])) {
-			metric_attrs = topdown_metric_L2_attrs;
-			max_level = 2;
+		if (!max_level) {
+			pr_err("Topdown requested but the topdown metric groups aren't present.\n"
+				"(See perf list the metric groups have names like TopdownL1)");
+			return -1;
 		}
-
 		if (stat_config.topdown_level > max_level) {
 			pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level);
 			return -1;
 		} else if (!stat_config.topdown_level)
-			stat_config.topdown_level = max_level;
-
-		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,
-					"Topdown accuracy may decrease when measuring long periods.\n"
-					"Please print the result regularly, e.g. -I1000\n");
-			}
-			goto setup_metrics;
-		}
+			stat_config.topdown_level = 1;
 
-		zfree(&str);
-
-		if (stat_config.aggr_mode != AGGR_GLOBAL &&
-		    stat_config.aggr_mode != AGGR_CORE) {
-			pr_err("top down event configuration requires --per-core mode\n");
-			return -1;
-		}
-		stat_config.aggr_mode = AGGR_CORE;
-		if (nr_cgroups || !target__has_cpu(&target)) {
-			pr_err("top down event configuration requires system-wide mode (-a)\n");
-			return -1;
-		}
-
-		if (topdown_filter_events(topdown_attrs, &str,
-				arch_topdown_check_group(&warn),
-				pmu_name) < 0) {
-			pr_err("Out of memory\n");
-			return -1;
+		if (!stat_config.interval && !stat_config.metric_only) {
+			fprintf(stat_config.output,
+				"Topdown accuracy may decrease when measuring long periods.\n"
+				"Please print the result regularly, e.g. -I1000\n");
 		}
-
-		if (topdown_attrs[0] && str) {
-			struct parse_events_error errinfo;
-			if (warn)
-				arch_topdown_group_warn();
-setup_metrics:
-			parse_events_error__init(&errinfo);
-			err = parse_events(evsel_list, str, &errinfo);
-			if (err) {
-				fprintf(stderr,
-					"Cannot set up top down events %s: %d\n",
-					str, err);
-				parse_events_error__print(&errinfo, str);
-				parse_events_error__exit(&errinfo);
-				free(str);
-				return -1;
-			}
-			parse_events_error__exit(&errinfo);
-		} else {
-			fprintf(stderr, "System does not support topdown\n");
+		str[8] = stat_config.topdown_level + '0';
+		if (metricgroup__parse_groups(evsel_list, str,
+						/*metric_no_group=*/false,
+						/*metric_no_merge=*/false,
+						/*metric_no_threshold=*/true,
+						stat_config.user_requested_cpu_list,
+						stat_config.system_wide,
+						&stat_config.metric_events) < 0)
 			return -1;
-		}
-		free(str);
 	}
 
 	if (!stat_config.topdown_level)
-		stat_config.topdown_level = TOPDOWN_MAX_LEVEL;
+		stat_config.topdown_level = 1;
 
 	if (!evsel_list->core.nr_entries) {
+		/* No events so add defaults. */
 		if (target__has_cpu(&target))
 			default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK;
 
@@ -2003,6 +1881,25 @@ setup_metrics:
 		}
 		if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0)
 			return -1;
+		/*
+		 * Add TopdownL1 metrics if they exist. To minimize
+		 * multiplexing, don't request threshold computation.
+		 */
+		/*
+		 * TODO: TopdownL1 is disabled on hybrid CPUs to avoid a crashes
+		 * caused by exposing latent bugs. This is fixed properly in:
+		 * https://lore.kernel.org/lkml/bff481ba-e60a-763f-0aa0-3ee53302c480@linux.intel.com/
+		 */
+		if (metricgroup__has_metric("TopdownL1") && !perf_pmu__has_hybrid() &&
+		    metricgroup__parse_groups(evsel_list, "TopdownL1",
+					    /*metric_no_group=*/false,
+					    /*metric_no_merge=*/false,
+					    /*metric_no_threshold=*/true,
+					    stat_config.user_requested_cpu_list,
+					    stat_config.system_wide,
+					    &stat_config.metric_events) < 0)
+			return -1;
+
 		/* Platform specific attrs */
 		if (evlist__add_default_attrs(evsel_list, default_null_attrs) < 0)
 			return -1;
@@ -2239,8 +2136,6 @@ static int __cmd_report(int argc, const char **argv)
 			input_name = "perf.data";
 	}
 
-	perf_stat__init_shadow_stats();
-
 	perf_stat.data.path = input_name;
 	perf_stat.data.mode = PERF_DATA_MODE_READ;
 
@@ -2281,7 +2176,7 @@ static void setup_system_wide(int forks)
 
 		evlist__for_each_entry(evsel_list, counter) {
 			if (!counter->core.requires_cpu &&
-			    strcmp(counter->name, "duration_time")) {
+			    !evsel__name_is(counter, "duration_time")) {
 				return;
 			}
 		}
@@ -2383,8 +2278,10 @@ int cmd_stat(int argc, const char **argv)
 			perror("failed to create output file");
 			return -1;
 		}
-		clock_gettime(CLOCK_REALTIME, &tm);
-		fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
+		if (!stat_config.json_output) {
+			clock_gettime(CLOCK_REALTIME, &tm);
+			fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
+		}
 	} else if (output_fd > 0) {
 		mode = append_file ? "a" : "w";
 		output = fdopen(output_fd, mode);
@@ -2514,12 +2411,12 @@ int cmd_stat(int argc, const char **argv)
 		metricgroup__parse_groups(evsel_list, metrics,
 					stat_config.metric_no_group,
 					stat_config.metric_no_merge,
+					stat_config.metric_no_threshold,
 					stat_config.user_requested_cpu_list,
 					stat_config.system_wide,
 					&stat_config.metric_events);
 		zfree(&metrics);
 	}
-	perf_stat__init_shadow_stats();
 
 	if (add_default_attributes())
 		goto out;