Merge tag 'v4.15-rc1' into next-seccomp

Linux 4.15-rc1

1 files changed, 89 insertions, 64 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 01e779b91c8e..a7fcd95961ef 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/hw_breakpoint.h>
 #include <linux/err.h>
 #include <dirent.h>
@@ -28,13 +29,14 @@
 #include "probe-file.h"
 #include "asm/bug.h"
 #include "util/parse-branch-options.h"
+#include "metricgroup.h"
 
 #define MAX_NAME_LEN 100
 
 #ifdef PARSER_DEBUG
 extern int parse_events_debug;
 #endif
-int parse_events_parse(void *data, void *scanner);
+int parse_events_parse(void *parse_state, void *scanner);
 static int get_config_terms(struct list_head *head_config,
 			    struct list_head *head_terms __maybe_unused);
 
@@ -309,10 +311,11 @@ static char *get_config_name(struct list_head *head_terms)
 static struct perf_evsel *
 __add_event(struct list_head *list, int *idx,
 	    struct perf_event_attr *attr,
-	    char *name, struct cpu_map *cpus,
-	    struct list_head *config_terms)
+	    char *name, struct perf_pmu *pmu,
+	    struct list_head *config_terms, bool auto_merge_stats)
 {
 	struct perf_evsel *evsel;
+	struct cpu_map *cpus = pmu ? pmu->cpus : NULL;
 
 	event_attr_init(attr);
 
@@ -323,7 +326,8 @@ __add_event(struct list_head *list, int *idx,
 	(*idx)++;
 	evsel->cpus        = cpu_map__get(cpus);
 	evsel->own_cpus    = cpu_map__get(cpus);
-	evsel->system_wide = !!cpus;
+	evsel->system_wide = pmu ? pmu->is_uncore : false;
+	evsel->auto_merge_stats = auto_merge_stats;
 
 	if (name)
 		evsel->name = strdup(name);
@@ -339,7 +343,7 @@ static int add_event(struct list_head *list, int *idx,
 		     struct perf_event_attr *attr, char *name,
 		     struct list_head *config_terms)
 {
-	return __add_event(list, idx, attr, name, NULL, config_terms) ? 0 : -ENOMEM;
+	return __add_event(list, idx, attr, name, NULL, config_terms, false) ? 0 : -ENOMEM;
 }
 
 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
@@ -589,7 +593,7 @@ static int add_tracepoint_multi_sys(struct list_head *list, int *idx,
 }
 
 struct __add_bpf_event_param {
-	struct parse_events_evlist *data;
+	struct parse_events_state *parse_state;
 	struct list_head *list;
 	struct list_head *head_config;
 };
@@ -599,7 +603,7 @@ static int add_bpf_event(const char *group, const char *event, int fd,
 {
 	LIST_HEAD(new_evsels);
 	struct __add_bpf_event_param *param = _param;
-	struct parse_events_evlist *evlist = param->data;
+	struct parse_events_state *parse_state = param->parse_state;
 	struct list_head *list = param->list;
 	struct perf_evsel *pos;
 	int err;
@@ -607,8 +611,8 @@ static int add_bpf_event(const char *group, const char *event, int fd,
 	pr_debug("add bpf event %s:%s and attach bpf program %d\n",
 		 group, event, fd);
 
-	err = parse_events_add_tracepoint(&new_evsels, &evlist->idx, group,
-					  event, evlist->error,
+	err = parse_events_add_tracepoint(&new_evsels, &parse_state->idx, group,
+					  event, parse_state->error,
 					  param->head_config);
 	if (err) {
 		struct perf_evsel *evsel, *tmp;
@@ -632,14 +636,14 @@ static int add_bpf_event(const char *group, const char *event, int fd,
 	return 0;
 }
 
-int parse_events_load_bpf_obj(struct parse_events_evlist *data,
+int parse_events_load_bpf_obj(struct parse_events_state *parse_state,
 			      struct list_head *list,
 			      struct bpf_object *obj,
 			      struct list_head *head_config)
 {
 	int err;
 	char errbuf[BUFSIZ];
-	struct __add_bpf_event_param param = {data, list, head_config};
+	struct __add_bpf_event_param param = {parse_state, list, head_config};
 	static bool registered_unprobe_atexit = false;
 
 	if (IS_ERR(obj) || !obj) {
@@ -680,13 +684,13 @@ int parse_events_load_bpf_obj(struct parse_events_evlist *data,
 
 	return 0;
 errout:
-	data->error->help = strdup("(add -v to see detail)");
-	data->error->str = strdup(errbuf);
+	parse_state->error->help = strdup("(add -v to see detail)");
+	parse_state->error->str = strdup(errbuf);
 	return err;
 }
 
 static int
-parse_events_config_bpf(struct parse_events_evlist *data,
+parse_events_config_bpf(struct parse_events_state *parse_state,
 			struct bpf_object *obj,
 			struct list_head *head_config)
 {
@@ -705,28 +709,28 @@ parse_events_config_bpf(struct parse_events_evlist *data,
 				 "Invalid config term for BPF object");
 			errbuf[BUFSIZ - 1] = '\0';
 
-			data->error->idx = term->err_term;
-			data->error->str = strdup(errbuf);
+			parse_state->error->idx = term->err_term;
+			parse_state->error->str = strdup(errbuf);
 			return -EINVAL;
 		}
 
-		err = bpf__config_obj(obj, term, data->evlist, &error_pos);
+		err = bpf__config_obj(obj, term, parse_state->evlist, &error_pos);
 		if (err) {
-			bpf__strerror_config_obj(obj, term, data->evlist,
+			bpf__strerror_config_obj(obj, term, parse_state->evlist,
 						 &error_pos, err, errbuf,
 						 sizeof(errbuf));
-			data->error->help = strdup(
+			parse_state->error->help = strdup(
 "Hint:\tValid config terms:\n"
 "     \tmap:[<arraymap>].value<indices>=[value]\n"
 "     \tmap:[<eventmap>].event<indices>=[event]\n"
 "\n"
 "     \twhere <indices> is something like [0,3...5] or [all]\n"
 "     \t(add -v to see detail)");
-			data->error->str = strdup(errbuf);
+			parse_state->error->str = strdup(errbuf);
 			if (err == -BPF_LOADER_ERRNO__OBJCONF_MAP_VALUE)
-				data->error->idx = term->err_val;
+				parse_state->error->idx = term->err_val;
 			else
-				data->error->idx = term->err_term + error_pos;
+				parse_state->error->idx = term->err_term + error_pos;
 			return err;
 		}
 	}
@@ -762,7 +766,7 @@ split_bpf_config_terms(struct list_head *evt_head_config,
 			list_move_tail(&term->list, obj_head_config);
 }
 
-int parse_events_load_bpf(struct parse_events_evlist *data,
+int parse_events_load_bpf(struct parse_events_state *parse_state,
 			  struct list_head *list,
 			  char *bpf_file_name,
 			  bool source,
@@ -790,15 +794,15 @@ int parse_events_load_bpf(struct parse_events_evlist *data,
 						   -err, errbuf,
 						   sizeof(errbuf));
 
-		data->error->help = strdup("(add -v to see detail)");
-		data->error->str = strdup(errbuf);
+		parse_state->error->help = strdup("(add -v to see detail)");
+		parse_state->error->str = strdup(errbuf);
 		return err;
 	}
 
-	err = parse_events_load_bpf_obj(data, list, obj, head_config);
+	err = parse_events_load_bpf_obj(parse_state, list, obj, head_config);
 	if (err)
 		return err;
-	err = parse_events_config_bpf(data, obj, &obj_head_config);
+	err = parse_events_config_bpf(parse_state, obj, &obj_head_config);
 
 	/*
 	 * Caller doesn't know anything about obj_head_config,
@@ -1184,7 +1188,7 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
 					    err, head_config);
 }
 
-int parse_events_add_numeric(struct parse_events_evlist *data,
+int parse_events_add_numeric(struct parse_events_state *parse_state,
 			     struct list_head *list,
 			     u32 type, u64 config,
 			     struct list_head *head_config)
@@ -1197,7 +1201,7 @@ int parse_events_add_numeric(struct parse_events_evlist *data,
 	attr.config = config;
 
 	if (head_config) {
-		if (config_attr(&attr, head_config, data->error,
+		if (config_attr(&attr, head_config, parse_state->error,
 				config_term_common))
 			return -EINVAL;
 
@@ -1205,23 +1209,29 @@ int parse_events_add_numeric(struct parse_events_evlist *data,
 			return -ENOMEM;
 	}
 
-	return add_event(list, &data->idx, &attr,
+	return add_event(list, &parse_state->idx, &attr,
 			 get_config_name(head_config), &config_terms);
 }
 
-int parse_events_add_pmu(struct parse_events_evlist *data,
+static int __parse_events_add_pmu(struct parse_events_state *parse_state,
 			 struct list_head *list, char *name,
-			 struct list_head *head_config)
+			 struct list_head *head_config, bool auto_merge_stats)
 {
 	struct perf_event_attr attr;
 	struct perf_pmu_info info;
 	struct perf_pmu *pmu;
 	struct perf_evsel *evsel;
+	struct parse_events_error *err = parse_state->error;
 	LIST_HEAD(config_terms);
 
 	pmu = perf_pmu__find(name);
-	if (!pmu)
+	if (!pmu) {
+		if (asprintf(&err->str,
+				"Cannot find PMU `%s'. Missing kernel support?",
+				name) < 0)
+			err->str = NULL;
 		return -EINVAL;
+	}
 
 	if (pmu->default_config) {
 		memcpy(&attr, pmu->default_config,
@@ -1232,7 +1242,7 @@ int parse_events_add_pmu(struct parse_events_evlist *data,
 
 	if (!head_config) {
 		attr.type = pmu->type;
-		evsel = __add_event(list, &data->idx, &attr, NULL, pmu->cpus, NULL);
+		evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL, auto_merge_stats);
 		return evsel ? 0 : -ENOMEM;
 	}
 
@@ -1243,18 +1253,18 @@ int parse_events_add_pmu(struct parse_events_evlist *data,
 	 * Configure hardcoded terms first, no need to check
 	 * return value when called with fail == 0 ;)
 	 */
-	if (config_attr(&attr, head_config, data->error, config_term_pmu))
+	if (config_attr(&attr, head_config, parse_state->error, config_term_pmu))
 		return -EINVAL;
 
 	if (get_config_terms(head_config, &config_terms))
 		return -ENOMEM;
 
-	if (perf_pmu__config(pmu, &attr, head_config, data->error))
+	if (perf_pmu__config(pmu, &attr, head_config, parse_state->error))
 		return -EINVAL;
 
-	evsel = __add_event(list, &data->idx, &attr,
-			    get_config_name(head_config), pmu->cpus,
-			    &config_terms);
+	evsel = __add_event(list, &parse_state->idx, &attr,
+			    get_config_name(head_config), pmu,
+			    &config_terms, auto_merge_stats);
 	if (evsel) {
 		evsel->unit = info.unit;
 		evsel->scale = info.scale;
@@ -1267,7 +1277,14 @@ int parse_events_add_pmu(struct parse_events_evlist *data,
 	return evsel ? 0 : -ENOMEM;
 }
 
-int parse_events_multi_pmu_add(struct parse_events_evlist *data,
+int parse_events_add_pmu(struct parse_events_state *parse_state,
+			 struct list_head *list, char *name,
+			 struct list_head *head_config)
+{
+	return __parse_events_add_pmu(parse_state, list, name, head_config, false);
+}
+
+int parse_events_multi_pmu_add(struct parse_events_state *parse_state,
 			       char *str, struct list_head **listp)
 {
 	struct list_head *head;
@@ -1296,8 +1313,8 @@ int parse_events_multi_pmu_add(struct parse_events_evlist *data,
 					return -1;
 				list_add_tail(&term->list, head);
 
-				if (!parse_events_add_pmu(data, list,
-						  pmu->name, head)) {
+				if (!__parse_events_add_pmu(parse_state, list,
+							    pmu->name, head, true)) {
 					pr_debug("%s -> %s/%s/\n", str,
 						 pmu->name, alias->str);
 					ok++;
@@ -1358,6 +1375,7 @@ struct event_modifier {
 	int exclude_GH;
 	int sample_read;
 	int pinned;
+	int weak;
 };
 
 static int get_event_modifier(struct event_modifier *mod, char *str,
@@ -1376,6 +1394,7 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
 
 	int exclude = eu | ek | eh;
 	int exclude_GH = evsel ? evsel->exclude_GH : 0;
+	int weak = 0;
 
 	memset(mod, 0, sizeof(*mod));
 
@@ -1413,6 +1432,8 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
 			sample_read = 1;
 		} else if (*str == 'D') {
 			pinned = 1;
+		} else if (*str == 'W') {
+			weak = 1;
 		} else
 			break;
 
@@ -1443,6 +1464,7 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
 	mod->exclude_GH = exclude_GH;
 	mod->sample_read = sample_read;
 	mod->pinned = pinned;
+	mod->weak = weak;
 
 	return 0;
 }
@@ -1456,7 +1478,7 @@ static int check_modifier(char *str)
 	char *p = str;
 
 	/* The sizeof includes 0 byte as well. */
-	if (strlen(str) > (sizeof("ukhGHpppPSDI") - 1))
+	if (strlen(str) > (sizeof("ukhGHpppPSDIW") - 1))
 		return -1;
 
 	while (*p) {
@@ -1496,6 +1518,7 @@ int parse_events__modifier_event(struct list_head *list, char *str, bool add)
 		evsel->exclude_GH          = mod.exclude_GH;
 		evsel->sample_read         = mod.sample_read;
 		evsel->precise_max         = mod.precise_max;
+		evsel->weak_group	   = mod.weak;
 
 		if (perf_evsel__is_group_leader(evsel))
 			evsel->attr.pinned = mod.pinned;
@@ -1628,7 +1651,7 @@ perf_pmu__parse_check(const char *name)
 	return r ? r->type : PMU_EVENT_SYMBOL_ERR;
 }
 
-static int parse_events__scanner(const char *str, void *data, int start_token)
+static int parse_events__scanner(const char *str, void *parse_state, int start_token)
 {
 	YY_BUFFER_STATE buffer;
 	void *scanner;
@@ -1643,7 +1666,7 @@ static int parse_events__scanner(const char *str, void *data, int start_token)
 #ifdef PARSER_DEBUG
 	parse_events_debug = 1;
 #endif
-	ret = parse_events_parse(data, scanner);
+	ret = parse_events_parse(parse_state, scanner);
 
 	parse_events__flush_buffer(buffer, scanner);
 	parse_events__delete_buffer(buffer, scanner);
@@ -1656,45 +1679,45 @@ static int parse_events__scanner(const char *str, void *data, int start_token)
  */
 int parse_events_terms(struct list_head *terms, const char *str)
 {
-	struct parse_events_terms data = {
+	struct parse_events_state parse_state = {
 		.terms = NULL,
 	};
 	int ret;
 
-	ret = parse_events__scanner(str, &data, PE_START_TERMS);
+	ret = parse_events__scanner(str, &parse_state, PE_START_TERMS);
 	if (!ret) {
-		list_splice(data.terms, terms);
-		zfree(&data.terms);
+		list_splice(parse_state.terms, terms);
+		zfree(&parse_state.terms);
 		return 0;
 	}
 
-	parse_events_terms__delete(data.terms);
+	parse_events_terms__delete(parse_state.terms);
 	return ret;
 }
 
 int parse_events(struct perf_evlist *evlist, const char *str,
 		 struct parse_events_error *err)
 {
-	struct parse_events_evlist data = {
-		.list   = LIST_HEAD_INIT(data.list),
+	struct parse_events_state parse_state = {
+		.list   = LIST_HEAD_INIT(parse_state.list),
 		.idx    = evlist->nr_entries,
 		.error  = err,
 		.evlist = evlist,
 	};
 	int ret;
 
-	ret = parse_events__scanner(str, &data, PE_START_EVENTS);
+	ret = parse_events__scanner(str, &parse_state, PE_START_EVENTS);
 	perf_pmu__parse_cleanup();
 	if (!ret) {
 		struct perf_evsel *last;
 
-		if (list_empty(&data.list)) {
+		if (list_empty(&parse_state.list)) {
 			WARN_ONCE(true, "WARNING: event parser found nothing");
 			return -1;
 		}
 
-		perf_evlist__splice_list_tail(evlist, &data.list);
-		evlist->nr_groups += data.nr_groups;
+		perf_evlist__splice_list_tail(evlist, &parse_state.list);
+		evlist->nr_groups += parse_state.nr_groups;
 		last = perf_evlist__last(evlist);
 		last->cmdline_group_boundary = true;
 
@@ -1718,8 +1741,8 @@ static int get_term_width(void)
 	return ws.ws_col > MAX_WIDTH ? MAX_WIDTH : ws.ws_col;
 }
 
-static void parse_events_print_error(struct parse_events_error *err,
-				     const char *event)
+void parse_events_print_error(struct parse_events_error *err,
+			      const char *event)
 {
 	const char *str = "invalid or unsupported event: ";
 	char _buf[MAX_WIDTH];
@@ -1774,8 +1797,6 @@ static void parse_events_print_error(struct parse_events_error *err,
 		zfree(&err->str);
 		zfree(&err->help);
 	}
-
-	fprintf(stderr, "Run 'perf list' for a list of valid events\n");
 }
 
 #undef MAX_WIDTH
@@ -1787,8 +1808,10 @@ int parse_events_option(const struct option *opt, const char *str,
 	struct parse_events_error err = { .idx = 0, };
 	int ret = parse_events(evlist, str, &err);
 
-	if (ret)
+	if (ret) {
 		parse_events_print_error(&err, str);
+		fprintf(stderr, "Run 'perf list' for a list of valid events\n");
+	}
 
 	return ret;
 }
@@ -2124,7 +2147,7 @@ void print_sdt_events(const char *subsys_glob, const char *event_glob,
 		return;
 	}
 	strlist__for_each_entry(nd, bidlist) {
-		pcache = probe_cache__new(nd->s);
+		pcache = probe_cache__new(nd->s, NULL);
 		if (!pcache)
 			continue;
 		list_for_each_entry(ent, &pcache->entries, node) {
@@ -2366,6 +2389,8 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag,
 	print_tracepoint_events(NULL, NULL, name_only);
 
 	print_sdt_events(NULL, NULL, name_only);
+
+	metricgroup__print(true, true, NULL, name_only);
 }
 
 int parse_events__is_hardcoded_term(struct parse_events_term *term)
@@ -2520,10 +2545,10 @@ void parse_events__clear_array(struct parse_events_array *a)
 	zfree(&a->ranges);
 }
 
-void parse_events_evlist_error(struct parse_events_evlist *data,
+void parse_events_evlist_error(struct parse_events_state *parse_state,
 			       int idx, const char *str)
 {
-	struct parse_events_error *err = data->error;
+	struct parse_events_error *err = parse_state->error;
 
 	if (!err)
 		return;