1 files changed, 177 insertions, 221 deletions

diff --git a/tools/perf/util/print-events.c b/tools/perf/util/print-events.c
index 2646ae18d9f9..8f3ed83853a9 100644
--- a/tools/perf/util/print-events.c
+++ b/tools/perf/util/print-events.c
@@ -4,9 +4,12 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <fcntl.h>
 #include <sys/param.h>
+#include <unistd.h>
 
 #include <api/fs/tracing_path.h>
+#include <api/io.h>
 #include <linux/stddef.h>
 #include <linux/perf_event.h>
 #include <linux/zalloc.h>
@@ -18,13 +21,16 @@
 #include "metricgroup.h"
 #include "parse-events.h"
 #include "pmu.h"
+#include "pmus.h"
 #include "print-events.h"
 #include "probe-file.h"
 #include "string2.h"
 #include "strlist.h"
 #include "tracepoint.h"
 #include "pfm.h"
-#include "pmu-hybrid.h"
+#include "thread_map.h"
+#include "tool_pmu.h"
+#include "util.h"
 
 #define MAX_NAME_LEN 100
 
@@ -34,83 +40,10 @@ static const char * const event_type_descriptors[] = {
 	"Software event",
 	"Tracepoint event",
 	"Hardware cache event",
-	"Raw hardware event descriptor",
+	"Raw event descriptor",
 	"Hardware breakpoint",
 };
 
-static const struct event_symbol event_symbols_tool[PERF_TOOL_MAX] = {
-	[PERF_TOOL_DURATION_TIME] = {
-		.symbol = "duration_time",
-		.alias  = "",
-	},
-	[PERF_TOOL_USER_TIME] = {
-		.symbol = "user_time",
-		.alias  = "",
-	},
-	[PERF_TOOL_SYSTEM_TIME] = {
-		.symbol = "system_time",
-		.alias  = "",
-	},
-};
-
-/*
- * Print the events from <debugfs_mount_point>/tracing/events
- */
-void print_tracepoint_events(const struct print_callbacks *print_cb, void *print_state)
-{
-	struct dirent **sys_namelist = NULL;
-	int sys_items = tracing_events__scandir_alphasort(&sys_namelist);
-
-	for (int i = 0; i < sys_items; i++) {
-		struct dirent *sys_dirent = sys_namelist[i];
-		struct dirent **evt_namelist = NULL;
-		char *dir_path;
-		int evt_items;
-
-		if (sys_dirent->d_type != DT_DIR ||
-		    !strcmp(sys_dirent->d_name, ".") ||
-		    !strcmp(sys_dirent->d_name, ".."))
-			continue;
-
-		dir_path = get_events_file(sys_dirent->d_name);
-		if (!dir_path)
-			continue;
-
-		evt_items = scandir(dir_path, &evt_namelist, NULL, alphasort);
-		for (int j = 0; j < evt_items; j++) {
-			struct dirent *evt_dirent = evt_namelist[j];
-			char evt_path[MAXPATHLEN];
-
-			if (evt_dirent->d_type != DT_DIR ||
-			    !strcmp(evt_dirent->d_name, ".") ||
-			    !strcmp(evt_dirent->d_name, ".."))
-				continue;
-
-			if (tp_event_has_id(dir_path, evt_dirent) != 0)
-				continue;
-
-			snprintf(evt_path, MAXPATHLEN, "%s:%s",
-				 sys_dirent->d_name, evt_dirent->d_name);
-			print_cb->print_event(print_state,
-					/*topic=*/NULL,
-					/*pmu_name=*/NULL,
-					evt_path,
-					/*event_alias=*/NULL,
-					/*scale_unit=*/NULL,
-					/*deprecated=*/false,
-					"Tracepoint event",
-					/*desc=*/NULL,
-					/*long_desc=*/NULL,
-					/*encoding_desc=*/NULL,
-					/*metric_name=*/NULL,
-					/*metric_expr=*/NULL);
-		}
-		free(dir_path);
-		free(evt_namelist);
-	}
-	free(sys_namelist);
-}
-
 void print_sdt_events(const struct print_callbacks *print_cb, void *print_state)
 {
 	struct strlist *bidlist, *sdtlist;
@@ -188,6 +121,7 @@ void print_sdt_events(const struct print_callbacks *print_cb, void *print_state)
 		print_cb->print_event(print_state,
 				/*topic=*/NULL,
 				/*pmu_name=*/NULL,
+				PERF_TYPE_TRACEPOINT,
 				evt_name ?: sdt_name->s,
 				/*event_alias=*/NULL,
 				/*deprecated=*/false,
@@ -195,147 +129,194 @@ void print_sdt_events(const struct print_callbacks *print_cb, void *print_state)
 				"SDT event",
 				/*desc=*/NULL,
 				/*long_desc=*/NULL,
-				/*encoding_desc=*/NULL,
-				/*metric_name=*/NULL,
-				/*metric_expr=*/NULL);
+				/*encoding_desc=*/NULL);
 
 		free(evt_name);
 	}
 	strlist__delete(sdtlist);
 }
 
-int print_hwcache_events(const struct print_callbacks *print_cb, void *print_state)
+bool is_event_supported(u8 type, u64 config)
 {
-	struct strlist *evt_name_list = strlist__new(NULL, NULL);
-	struct str_node *nd;
+	bool ret = true;
+	struct evsel *evsel;
+	struct perf_event_attr attr = {
+		.type = type,
+		.config = config,
+		.disabled = 1,
+	};
+	struct perf_thread_map *tmap = thread_map__new_by_tid(0);
+
+	if (tmap == NULL)
+		return false;
+
+	evsel = evsel__new(&attr);
+	if (evsel) {
+		ret = evsel__open(evsel, NULL, tmap) >= 0;
+
+		if (!ret) {
+			/*
+			 * The event may fail to open if the paranoid value
+			 * /proc/sys/kernel/perf_event_paranoid is set to 2
+			 * Re-run with exclude_kernel set; we don't do that by
+			 * default as some ARM machines do not support it.
+			 */
+			evsel->core.attr.exclude_kernel = 1;
+			ret = evsel__open(evsel, NULL, tmap) >= 0;
+		}
 
-	if (!evt_name_list) {
-		pr_debug("Failed to allocate new strlist for hwcache events\n");
-		return -ENOMEM;
-	}
-	for (int type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
-		for (int op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
-			/* skip invalid cache type */
-			if (!evsel__is_cache_op_valid(type, op))
-				continue;
-
-			for (int i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
-				struct perf_pmu *pmu = NULL;
-				char name[64];
-
-				__evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name));
-				if (!perf_pmu__has_hybrid()) {
-					if (is_event_supported(PERF_TYPE_HW_CACHE,
-							       type | (op << 8) | (i << 16)))
-						strlist__add(evt_name_list, name);
-					continue;
-				}
-				perf_pmu__for_each_hybrid_pmu(pmu) {
-					if (is_event_supported(PERF_TYPE_HW_CACHE,
-					    type | (op << 8) | (i << 16) |
-					    ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT))) {
-						char new_name[128];
-							snprintf(new_name, sizeof(new_name),
-								 "%s/%s/", pmu->name, name);
-							strlist__add(evt_name_list, new_name);
-					}
-				}
-			}
+		if (!ret) {
+			/*
+			 * The event may fail to open if the PMU requires
+			 * exclude_guest to be set (e.g. as the Apple M1 PMU
+			 * requires).
+			 * Re-run with exclude_guest set; we don't do that by
+			 * default as it's equally legitimate for another PMU
+			 * driver to require that exclude_guest is clear.
+			 */
+			evsel->core.attr.exclude_guest = 1;
+			ret = evsel__open(evsel, NULL, tmap) >= 0;
 		}
-	}
 
-	strlist__for_each_entry(nd, evt_name_list) {
-		print_cb->print_event(print_state,
-				"cache",
-				/*pmu_name=*/NULL,
-				nd->s,
-				/*event_alias=*/NULL,
-				/*scale_unit=*/NULL,
-				/*deprecated=*/false,
-				event_type_descriptors[PERF_TYPE_HW_CACHE],
-				/*desc=*/NULL,
-				/*long_desc=*/NULL,
-				/*encoding_desc=*/NULL,
-				/*metric_name=*/NULL,
-				/*metric_expr=*/NULL);
+		evsel__close(evsel);
+		evsel__delete(evsel);
 	}
-	strlist__delete(evt_name_list);
-	return 0;
+
+	perf_thread_map__put(tmap);
+	return ret;
 }
 
-void print_tool_events(const struct print_callbacks *print_cb, void *print_state)
+/** struct mep - RB-tree node for building printing information. */
+struct mep {
+	/** nd - RB-tree element. */
+	struct rb_node nd;
+	/** @metric_group: Owned metric group name, separated others with ';'. */
+	char *metric_group;
+	const char *metric_name;
+	const char *metric_desc;
+	const char *metric_long_desc;
+	const char *metric_expr;
+	const char *metric_threshold;
+	const char *metric_unit;
+	const char *pmu_name;
+};
+
+static int mep_cmp(struct rb_node *rb_node, const void *entry)
 {
-	// Start at 1 because the first enum entry means no tool event.
-	for (int i = 1; i < PERF_TOOL_MAX; ++i) {
-		print_cb->print_event(print_state,
-				"tool",
-				/*pmu_name=*/NULL,
-				event_symbols_tool[i].symbol,
-				event_symbols_tool[i].alias,
-				/*scale_unit=*/NULL,
-				/*deprecated=*/false,
-				"Tool event",
-				/*desc=*/NULL,
-				/*long_desc=*/NULL,
-				/*encoding_desc=*/NULL,
-				/*metric_name=*/NULL,
-				/*metric_expr=*/NULL);
-	}
+	struct mep *a = container_of(rb_node, struct mep, nd);
+	struct mep *b = (struct mep *)entry;
+	int ret;
+
+	ret = strcmp(a->metric_group, b->metric_group);
+	if (ret)
+		return ret;
+
+	return strcmp(a->metric_name, b->metric_name);
 }
 
-void print_symbol_events(const struct print_callbacks *print_cb, void *print_state,
-			 unsigned int type, const struct event_symbol *syms,
-			 unsigned int max)
+static struct rb_node *mep_new(struct rblist *rl __maybe_unused, const void *entry)
 {
-	struct strlist *evt_name_list = strlist__new(NULL, NULL);
-	struct str_node *nd;
+	struct mep *me = malloc(sizeof(struct mep));
 
-	if (!evt_name_list) {
-		pr_debug("Failed to allocate new strlist for symbol events\n");
-		return;
-	}
-	for (unsigned int i = 0; i < max; i++) {
-		/*
-		 * New attr.config still not supported here, the latest
-		 * example was PERF_COUNT_SW_CGROUP_SWITCHES
-		 */
-		if (syms[i].symbol == NULL)
-			continue;
+	if (!me)
+		return NULL;
 
-		if (!is_event_supported(type, i))
-			continue;
+	memcpy(me, entry, sizeof(struct mep));
+	return &me->nd;
+}
 
-		if (strlen(syms[i].alias)) {
-			char name[MAX_NAME_LEN];
+static void mep_delete(struct rblist *rl __maybe_unused,
+		       struct rb_node *nd)
+{
+	struct mep *me = container_of(nd, struct mep, nd);
+
+	zfree(&me->metric_group);
+	free(me);
+}
 
-			snprintf(name, MAX_NAME_LEN, "%s OR %s", syms[i].symbol, syms[i].alias);
-			strlist__add(evt_name_list, name);
-		} else
-			strlist__add(evt_name_list, syms[i].symbol);
+static struct mep *mep_lookup(struct rblist *groups, const char *metric_group,
+			      const char *metric_name)
+{
+	struct rb_node *nd;
+	struct mep me = {
+		.metric_group = strdup(metric_group),
+		.metric_name = metric_name,
+	};
+	nd = rblist__find(groups, &me);
+	if (nd) {
+		free(me.metric_group);
+		return container_of(nd, struct mep, nd);
 	}
+	rblist__add_node(groups, &me);
+	nd = rblist__find(groups, &me);
+	if (nd)
+		return container_of(nd, struct mep, nd);
+	return NULL;
+}
 
-	strlist__for_each_entry(nd, evt_name_list) {
-		char *alias = strstr(nd->s, " OR ");
+static int metricgroup__add_to_mep_groups_callback(const struct pmu_metric *pm,
+					const struct pmu_metrics_table *table __maybe_unused,
+					void *vdata)
+{
+	struct rblist *groups = vdata;
+	const char *g;
+	char *omg, *mg;
 
-		if (alias) {
-			*alias = '\0';
-			alias += 4;
+	mg = strdup(pm->metric_group ?: pm->metric_name);
+	if (!mg)
+		return -ENOMEM;
+	omg = mg;
+	while ((g = strsep(&mg, ";")) != NULL) {
+		struct mep *me;
+
+		g = skip_spaces(g);
+		if (strlen(g))
+			me = mep_lookup(groups, g, pm->metric_name);
+		else
+			me = mep_lookup(groups, pm->metric_name, pm->metric_name);
+
+		if (me) {
+			me->metric_desc = pm->desc;
+			me->metric_long_desc = pm->long_desc;
+			me->metric_expr = pm->metric_expr;
+			me->metric_threshold = pm->metric_threshold;
+			me->metric_unit = pm->unit;
+			me->pmu_name = pm->pmu;
 		}
-		print_cb->print_event(print_state,
-				/*topic=*/NULL,
-				/*pmu_name=*/NULL,
-				nd->s,
-				alias,
-				/*scale_unit=*/NULL,
-				/*deprecated=*/false,
-				event_type_descriptors[type],
-				/*desc=*/NULL,
-				/*long_desc=*/NULL,
-				/*encoding_desc=*/NULL,
-				/*metric_name=*/NULL,
-				/*metric_expr=*/NULL);
 	}
-	strlist__delete(evt_name_list);
+	free(omg);
+
+	return 0;
+}
+
+void metricgroup__print(const struct print_callbacks *print_cb, void *print_state)
+{
+	struct rblist groups;
+	struct rb_node *node, *next;
+	const struct pmu_metrics_table *table = pmu_metrics_table__find();
+
+	rblist__init(&groups);
+	groups.node_new = mep_new;
+	groups.node_cmp = mep_cmp;
+	groups.node_delete = mep_delete;
+
+	metricgroup__for_each_metric(table, metricgroup__add_to_mep_groups_callback, &groups);
+
+	for (node = rb_first_cached(&groups.entries); node; node = next) {
+		struct mep *me = container_of(node, struct mep, nd);
+
+		print_cb->print_metric(print_state,
+				me->metric_group,
+				me->metric_name,
+				me->metric_desc,
+				me->metric_long_desc,
+				me->metric_expr,
+				me->metric_threshold,
+				me->metric_unit,
+				me->pmu_name);
+		next = rb_next(node);
+		rblist__remove_node(&groups, node);
+	}
 }
 
 /*
@@ -343,20 +324,12 @@ void print_symbol_events(const struct print_callbacks *print_cb, void *print_sta
  */
 void print_events(const struct print_callbacks *print_cb, void *print_state)
 {
-	print_symbol_events(print_cb, print_state, PERF_TYPE_HARDWARE,
-			event_symbols_hw, PERF_COUNT_HW_MAX);
-	print_symbol_events(print_cb, print_state, PERF_TYPE_SOFTWARE,
-			event_symbols_sw, PERF_COUNT_SW_MAX);
-
-	print_tool_events(print_cb, print_state);
-
-	print_hwcache_events(print_cb, print_state);
-
-	print_pmu_events(print_cb, print_state);
+	perf_pmus__print_pmu_events(print_cb, print_state);
 
 	print_cb->print_event(print_state,
 			/*topic=*/NULL,
 			/*pmu_name=*/NULL,
+			PERF_TYPE_RAW,
 			"rNNN",
 			/*event_alias=*/NULL,
 			/*scale_unit=*/NULL,
@@ -364,27 +337,14 @@ void print_events(const struct print_callbacks *print_cb, void *print_state)
 			event_type_descriptors[PERF_TYPE_RAW],
 			/*desc=*/NULL,
 			/*long_desc=*/NULL,
-			/*encoding_desc=*/NULL,
-			/*metric_name=*/NULL,
-			/*metric_expr=*/NULL);
+			/*encoding_desc=*/NULL);
 
-	print_cb->print_event(print_state,
-			/*topic=*/NULL,
-			/*pmu_name=*/NULL,
-			"cpu/t1=v1[,t2=v2,t3 ...]/modifier",
-			/*event_alias=*/NULL,
-			/*scale_unit=*/NULL,
-			/*deprecated=*/false,
-			event_type_descriptors[PERF_TYPE_RAW],
-			"(see 'man perf-list' on how to encode it)",
-			/*long_desc=*/NULL,
-			/*encoding_desc=*/NULL,
-			/*metric_name=*/NULL,
-			/*metric_expr=*/NULL);
+	perf_pmus__print_raw_pmu_events(print_cb, print_state);
 
 	print_cb->print_event(print_state,
 			/*topic=*/NULL,
 			/*pmu_name=*/NULL,
+			PERF_TYPE_BREAKPOINT,
 			"mem:<addr>[/len][:access]",
 			/*scale_unit=*/NULL,
 			/*event_alias=*/NULL,
@@ -392,11 +352,7 @@ void print_events(const struct print_callbacks *print_cb, void *print_state)
 			event_type_descriptors[PERF_TYPE_BREAKPOINT],
 			/*desc=*/NULL,
 			/*long_desc=*/NULL,
-			/*encoding_desc=*/NULL,
-			/*metric_name=*/NULL,
-			/*metric_expr=*/NULL);
-
-	print_tracepoint_events(print_cb, print_state);
+			/*encoding_desc=*/NULL);
 
 	print_sdt_events(print_cb, print_state);