perf: Add support for full Intel event lists v7

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155 lines not on this page · raw message

new file mode 100644
index 0000000..37dd9e9
@@ -0,0 +1,13 @@
+#ifndef JSON_H
+#define JSON_H 1
+
+#include "jsmn.h"
+
+jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len);
+void free_json(char *map, size_t size, jsmntok_t *tokens);
+int json_line(char *map, jsmntok_t *t);
+const char *json_name(jsmntok_t *t);
+int json_streq(char *map, jsmntok_t *t, const char *s);
+int json_len(jsmntok_t *t);
+
+#endif

index 7a811eb..f9c7046 100644
@@ -14,6 +14,7 @@
 
 struct perf_pmu_alias {
 	char *name;
+	char *desc;
 	struct list_head terms;
 	struct list_head list;
 	char unit[UNIT_MAX_LEN+1];

@@ -171,17 +172,12 @@ error:
 	return -1;
 }
 
-static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file)
+static int __perf_pmu__new_alias(struct list_head *list, char *name,
+				 char *dir, char *desc, char *val)
 {
 	struct perf_pmu_alias *alias;
-	char buf[256];
 	int ret;
 
-	ret = fread(buf, 1, sizeof(buf), file);
-	if (ret == 0)
-		return -EINVAL;
-	buf[ret] = 0;
-
 	alias = malloc(sizeof(*alias));
 	if (!alias)
 		return -ENOMEM;

@@ -190,24 +186,45 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
 	alias->scale = 1.0;
 	alias->unit[0] = '\0';
 
-	ret = parse_events_terms(&alias->terms, buf);
+	ret = parse_events_terms(&alias->terms, val);
 	if (ret) {
+		pr_err("Cannot parse alias %s: %d\n", val, ret);
 		free(alias);
 		return ret;
 	}
 
 	alias->name = strdup(name);
-	/*
-	 * load unit name and scale if available
-	 */
-	perf_pmu__parse_unit(alias, dir, name);
-	perf_pmu__parse_scale(alias, dir, name);
 
+	if (dir) {
+		/*
+		 * load unit name and scale if available
+		 */
+		perf_pmu__parse_unit(alias, dir, name);
+		perf_pmu__parse_scale(alias, dir, name);
+	}
+
+	alias->desc = desc ? strdup(desc) : NULL;
 	list_add_tail(&alias->list, list);
 
 	return 0;
 }
 
+static int perf_pmu__new_alias(struct list_head *list,
+			       char *dir,
+			       char *name,
+			       FILE *file)
+{
+	char buf[256];
+	int ret;
+
+	ret = fread(buf, 1, sizeof(buf), file);
+	if (ret == 0)
+		return -EINVAL;
+	buf[ret] = 0;
+
+	return __perf_pmu__new_alias(list, name, dir, NULL, buf);
+}
+
 /*
  * Process all the sysfs attributes located under the directory
  * specified in 'dir' parameter.

index f9c7046..baec090 100644
@@ -737,11 +737,51 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
 	return buf;
 }
 
-static int cmp_string(const void *a, const void *b)
+struct pair {
+	char *name;
+	char *desc;
+};
+
+static int cmp_pair(const void *a, const void *b)
+{
+	const struct pair *as = a;
+	const struct pair *bs = b;
+
+	/* Put downloaded event list last */
+	if (!!as->desc != !!bs->desc)
+		return !!as->desc - !!bs->desc;
+	return strcmp(as->name, bs->name);
+}
+
+static void wordwrap(char *s, int start, int max, int corr)
+{
+	int column = start;
+	int n;
+
+	while (*s) {
+		int wlen = strcspn(s, " \t");
+
+		if (column + wlen >= max && column > start) {
+			printf("\n%*s", start, "");
+			column = start + corr;
+		}
+		n = printf("%s%.*s", column > start ? " " : "", wlen, s);
+		if (n <= 0)
+			break;
+		s += wlen;
+		column += n;
+		while (isspace(*s))
+			s++;
+	}
+}
+
+static int get_columns(void)
 {
-	const char * const *as = a;
-	const char * const *bs = b;
-	return strcmp(*as, *bs);
+	/*
+	 * Should ask the terminal with TIOCGWINSZ here, but we
+	 * need the original fd before the pager.
+	 */
+	return 79;
 }
 
 void print_pmu_events(const char *event_glob, bool name_only)

@@ -751,21 +791,24 @@ void print_pmu_events(const char *event_glob, bool name_only)
 	char buf[1024];
 	int printed = 0;
 	int len, j;
-	char **aliases;
+	struct pair *aliases;
+	int numdesc = 0;
+	int columns = get_columns();
 
 	pmu = NULL;
 	len = 0;
 	while ((pmu = perf_pmu__scan(pmu)) != NULL)
 		list_for_each_entry(alias, &pmu->aliases, list)
 			len++;
-	aliases = malloc(sizeof(char *) * len);
+	aliases = malloc(sizeof(struct pair) * len);
 	if (!aliases)
 		return;
 	pmu = NULL;
 	j = 0;
 	while ((pmu = perf_pmu__scan(pmu)) != NULL)
 		list_for_each_entry(alias, &pmu->aliases, list) {
-			char *name = format_alias(buf, sizeof(buf), pmu, alias);
+			char *name = alias->desc ? alias->name :
+				format_alias(buf, sizeof(buf), pmu, alias);
 			bool is_cpu = !strcmp(pmu->name, "cpu");
 
 			if (event_glob != NULL &&

@@ -773,22 +816,31 @@ void print_pmu_events(const char *event_glob, bool name_only)
 			      (!is_cpu && strglobmatch(alias->name,
 						       event_glob))))
 				continue;
-			aliases[j] = name;
-			if (is_cpu && !name_only)
-				aliases[j] = format_alias_or(buf, sizeof(buf),
-							      pmu, alias);
-			aliases[j] = strdup(aliases[j]);
+			aliases[j].name = name;
+			if (is_cpu && !name_only && !alias->desc)
+				aliases[j].name = format_alias_or(buf,
+								  sizeof(buf),
+								  pmu, alias);
+			aliases[j].name = strdup(aliases[j].name);
+			aliases[j].desc = alias->desc;
 			j++;
 		}
 	len = j;
-	qsort(aliases, len, sizeof(char *), cmp_string);
+	qsort(aliases, len, sizeof(struct pair), cmp_pair);
 	for (j = 0; j < len; j++) {
 		if (name_only) {
-			printf("%s ", aliases[j]);
+			printf("%s ", aliases[j].name);
 			continue;
 		}
-		printf("  %-50s [Kernel PMU event]\n", aliases[j]);
-		zfree(&aliases[j]);
+		if (aliases[j].desc) {
+			if (numdesc++ == 0 && printed)
+				printf("\n");
+			printf("  %-50s [", aliases[j].name);
+			wordwrap(aliases[j].desc, 53, columns, 1);
+			printf("]\n");
+		} else
+			printf("  %-50s [Kernel PMU event]\n", aliases[j].name);
+		zfree(&aliases[j].name);
 		printed++;
 	}
 	if (printed)

index 011195e..086c96f 100644
@@ -20,6 +20,8 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	int i;
 	const struct option list_options[] = {
+		OPT_STRING(0, "events-file", &json_file, "json file",
+			   "Read event json file"),
 		OPT_END()
 	};
 	const char * const list_usage[] = {

index 378b85b..f22f27c 100644
@@ -25,6 +25,7 @@
 #include "util/cpumap.h"
 #include "util/thread_map.h"
 #include "util/data.h"
+#include "util/pmu.h"
 
 #include <unistd.h>
 #include <sched.h>

@@ -876,6 +877,8 @@ const struct option record_options[] = {
 		    "sample transaction flags (special events only)"),
 	OPT_BOOLEAN(0, "per-thread", &record.opts.target.per_thread,
 		    "use per-thread mmaps"),
+	OPT_STRING(0, "events-file", &json_file, "json file",
+		   "Read event json file"),
 	OPT_END()
 };
 

index 3e80aa1..37abdc2 100644
@@ -1668,6 +1668,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
 		     "aggregate counts per physical processor core", AGGR_CORE),
 	OPT_UINTEGER('D', "delay", &initial_delay,
 		     "ms to wait before starting measurement after program start"),
+	OPT_STRING(0, "events-file", &json_file, "json file",
+		   "Read event json file"),
 	OPT_END()
 	};
 	const char * const stat_usage[] = {

246 lines not on this page · raw message

new file mode 100644
index 0000000..fbc4549
@@ -0,0 +1,8 @@
+#ifndef JEVENTS_H
+#define JEVENTS_H 1
+
+int json_events(const char *fn,
+		int (*func)(void *data, char *name, char *event, char *desc),
+		void *data);
+
+#endif

index baec090..9f154af 100644
@@ -9,6 +9,9 @@
 #include "pmu.h"
 #include "parse-events.h"
 #include "cpumap.h"
+#include "jevents.h"
+
+const char *json_file;
 
 #define UNIT_MAX_LEN	31 /* max length for event unit name */
 

@@ -273,6 +276,14 @@ static int pmu_aliases_parse(char *dir, struct list_head *head)
 	return ret;
 }
 
+static int add_alias(void *data, char *name, char *event, char *desc)
+{
+	struct list_head *head = (struct list_head *)data;
+
+	__perf_pmu__new_alias(head, name, NULL, desc, event);
+	return 0;
+}
+
 /*
  * Reading the pmu event aliases definition, which should be located at:
  * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes.

@@ -422,6 +433,9 @@ static struct perf_pmu *pmu_lookup(const char *name)
 	if (pmu_aliases(name, &aliases))
 		return NULL;
 
+	if (!strcmp(name, "cpu") && json_file)
+		json_events(json_file, add_alias, &aliases);
+
 	if (pmu_type(name, &type))
 		return NULL;
 

index c14a543..583d21e 100644
@@ -46,4 +46,6 @@ void print_pmu_events(const char *event_glob, bool name_only);
 bool pmu_have_event(const char *pname, const char *name);
 
 int perf_pmu__test(void);
+
+extern const char *json_file;
 #endif /* __PMU_H */

index 146d12a..76e0ece 100644
@@ -5,6 +5,7 @@
 #include <string.h>
 
 #include "../../util/header.h"
+#include "../../util/jevents.h"
 
 static inline void
 cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,

@@ -19,8 +20,8 @@ cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
 			: "a" (op));
 }
 
-int
-get_cpuid(char *buffer, size_t sz)
+static int
+__get_cpuid(char *buffer, size_t sz, const char *fmt)
 {
 	unsigned int a, b, c, d, lvl;
 	int family = -1, model = -1, step = -1;

@@ -48,7 +49,7 @@ get_cpuid(char *buffer, size_t sz)
 		if (family >= 0x6)
 			model += ((a >> 16) & 0xf) << 4;
 	}
-	nb = scnprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step);
+	nb = scnprintf(buffer, sz, fmt, vendor, family, model, step);
 
 	/* look for end marker to ensure the entire data fit */
 	if (strchr(buffer, '$')) {

@@ -57,3 +58,15 @@ get_cpuid(char *buffer, size_t sz)
 	}
 	return -1;
 }
+
+int get_cpuid(char *buffer, size_t sz)
+{
+	return __get_cpuid(buffer, sz, "%s,%u,%u,%u$");
+}
+
+char *get_cpu_str(void)
+{
+	char *buf = malloc(128);
+	__get_cpuid(buf, 128, "%s-%d-%X-core");
+	return buf;
+}

index a23f57f..418502a 100644
@@ -38,6 +38,44 @@
 #include "json.h"
 #include "jevents.h"
 
+__attribute__((weak)) char *get_cpu_str(void)
+{
+	return NULL;
+}
+
+static const char *json_default_name(void)
+{
+	char *cache;
+	char *idstr = get_cpu_str();
+	char *res = NULL;
+	char *home = NULL;
+	char *emap;
+
+	emap = getenv("EVENTMAP");
+	if (emap) {
+		if (access(emap, R_OK) == 0)
+			return emap;
+		if (asprintf(&idstr, "%s-core", emap) < 0)
+			return NULL;
+	}
+
+	cache = getenv("XDG_CACHE_HOME");
+	if (!cache) {
+		home = getenv("HOME");
+		if (!home || asprintf(&cache, "%s/.cache", home) < 0)
+			goto out;
+	}
+	if (cache && idstr)
+		res = mkpath("%s/pmu-events/%s.json",
+			     cache,
+			     idstr);
+	if (home)
+		free(cache);
+out:
+	free(idstr);
+	return res;
+}
+
 static void addfield(char *map, char **dst, const char *sep,
 		     const char *a, jsmntok_t *bt)
 {

@@ -170,6 +208,8 @@ int json_events(const char *fn,
 	int i, j, len;
 	char *map;
 
+	if (!fn)
+		fn = json_default_name();
 	tokens = parse_json(fn, &map, &size, &len);
 	if (!tokens)
 		return -EIO;

index fbc4549..86a94dd 100644
@@ -4,5 +4,6 @@
 int json_events(const char *fn,
 		int (*func)(void *data, char *name, char *event, char *desc),
 		void *data);
+char *get_cpu_str(void);
 
 #endif

index 9f154af..fa21319 100644
@@ -433,7 +433,7 @@ static struct perf_pmu *pmu_lookup(const char *name)
 	if (pmu_aliases(name, &aliases))
 		return NULL;
 
-	if (!strcmp(name, "cpu") && json_file)
+	if (!strcmp(name, "cpu"))
 		json_events(json_file, add_alias, &aliases);
 
 	if (pmu_type(name, &type))

index 7b176dd..07527d6 100644
@@ -31,6 +31,7 @@ extern void setup_pager(void);
 extern const char *pager_program;
 extern int pager_in_use(void);
 extern int pager_use_color;
+int pager_get_columns(void);
 
 char *alias_lookup(const char *alias);
 int split_cmdline(char *cmdline, const char ***argv);

index 31ee02d..9761202 100644
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "run-command.h"
 #include "sigchain.h"
+#include <sys/ioctl.h>
 
 /*
  * This is split up from the rest of git so that we can do

@@ -8,6 +9,7 @@
  */
 
 static int spawned_pager;
+static int pager_columns;
 
 static void pager_preexec(void)
 {

@@ -47,9 +49,12 @@ static void wait_for_pager_signal(int signo)
 void setup_pager(void)
 {
 	const char *pager = getenv("PERF_PAGER");
+	struct winsize sz;
 
 	if (!isatty(1))
 		return;
+	if (ioctl(1, TIOCGWINSZ, &sz) == 0)
+		pager_columns = sz.ws_col;
 	if (!pager) {
 		if (!pager_program)
 			perf_config(perf_default_config, NULL);

@@ -98,3 +103,13 @@ int pager_in_use(void)
 	env = getenv("PERF_PAGER_IN_USE");
 	return env ? perf_config_bool("PERF_PAGER_IN_USE", env) : 0;
 }
+
+int pager_get_columns(void)
+{
+	char *s;
+
+	s = getenv("COLUMNS");
+	if (s)
+		return atoi(s);
+	return (pager_columns ? pager_columns : 80) - 2;
+}

index fa21319..8714f9a 100644
@@ -9,6 +9,7 @@
 #include "pmu.h"
 #include "parse-events.h"
 #include "cpumap.h"
+#include "cache.h"
 #include "jevents.h"
 
 const char *json_file;

@@ -789,15 +790,6 @@ static void wordwrap(char *s, int start, int max, int corr)
 	}
 }
 
-static int get_columns(void)
-{
-	/*
-	 * Should ask the terminal with TIOCGWINSZ here, but we
-	 * need the original fd before the pager.
-	 */
-	return 79;
-}
-
 void print_pmu_events(const char *event_glob, bool name_only)
 {
 	struct perf_pmu *pmu;

@@ -807,7 +799,7 @@ void print_pmu_events(const char *event_glob, bool name_only)
 	int len, j;
 	struct pair *aliases;
 	int numdesc = 0;
-	int columns = get_columns();
+	int columns = pager_get_columns();
 
 	pmu = NULL;
 	len = 0;

index 8714f9a..397e400 100644
@@ -869,3 +869,21 @@ bool pmu_have_event(const char *pname, const char *name)
 	}
 	return false;
 }
+
+int pmu_iterate_events(int (*func)(const char *pmu, const char *name))
+{
+	int ret = 0;
+	struct perf_pmu *pmu;
+	struct perf_pmu_alias *alias;
+
+	perf_pmu__find("cpu"); /* Load PMUs */
+	pmu = NULL;
+	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+		list_for_each_entry(alias, &pmu->aliases, list) {
+			ret = func(pmu->name, alias->name);
+			if (ret != 0)
+				break;
+		}
+	}
+	return ret;
+}

index 583d21e..87a1da4 100644
@@ -47,5 +47,7 @@ bool pmu_have_event(const char *pname, const char *name);
 
 int perf_pmu__test(void);
 
+int pmu_iterate_events(int (*func)(const char *, const char *name));
+
 extern const char *json_file;
 #endif /* __PMU_H */

index 6f8b01b..bb37ac2 100644
@@ -154,6 +154,10 @@ static struct test {
 		.func = test__hists_cumulate,
 	},
 	{
+		.desc = "Test parsing JSON aliases",
+		.func = test__aliases,
+	},
+	{
 		.func = NULL,
 	},
 };

index ed64790..ab92ad9 100644
@@ -48,6 +48,7 @@ int test__mmap_thread_lookup(void);
 int test__thread_mg_share(void);
 int test__hists_output(void);
 int test__hists_cumulate(void);
+int test__aliases(void);
 
 #if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT

58 lines not on this page · raw message

index 6f8b01b..bb37ac2 100644
@@ -154,6 +154,10 @@ static struct test {
 		.func = test__hists_cumulate,
 	},
 	{
+		.desc = "Test parsing JSON aliases",
+		.func = test__aliases,
+	},
+	{
 		.func = NULL,
 	},
 };

index ed64790..ab92ad9 100644
@@ -48,6 +48,7 @@ int test__mmap_thread_lookup(void);
 int test__thread_mg_share(void);
 int test__hists_output(void);
 int test__hists_cumulate(void);
+int test__aliases(void);
 
 #if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT

index 08a5f01..f315fbc 100644
@@ -25,7 +25,7 @@ static int test__event(const char *pmu, const char *name)
 		 * We only print on failure because common perf setups
 		 * have events that cannot be parsed.
 		 */
-		fprintf(stderr, "invalid or unsupported event: '%s'\n", name);
+		pr_err("invalid or unsupported event: '%s'\n", name);
 		ret = 0;
 		failed++;
 	} else

@@ -42,7 +42,7 @@ int test__aliases(void)
 	/* For now user must manually download */
 	if (0 && system("perf download > /dev/null") < 0) {
 		/* Don't error out for this for now */
-		fprintf(stderr, "perf download failed\n");
+		pr_err("perf download failed\n");
 	}
 
 	evlist = perf_evlist__new();

@@ -50,9 +50,9 @@ int test__aliases(void)
 		return -ENOMEM;
 
 	err = pmu_iterate_events(test__event);
-	fprintf(stderr, " Parsed %d events :", num_events);
+	pr_debug(" Parsed %d events :", num_events);
 	if (failed > 0)
-		pr_debug(" %d events failed", failed);
+		pr_err(" %d events failed", failed);
 	perf_evlist__delete(evlist);
 	return err;
 }

index 086c96f..68752a1 100644
@@ -16,16 +16,20 @@
 #include "util/pmu.h"
 #include "util/parse-options.h"
 
+static bool desc_flag = true;
+
 int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	int i;
 	const struct option list_options[] = {
 		OPT_STRING(0, "events-file", &json_file, "json file",
 			   "Read event json file"),
+		OPT_BOOLEAN('d', "desc", &desc_flag,
+			    "Print extra event descriptions. --no-desc to not print."),
 		OPT_END()
 	};
 	const char * const list_usage[] = {
-		"perf list [hw|sw|cache|tracepoint|pmu|event_glob]",
+		"perf list [--events-file FILE] [--no-desc] [hw|sw|cache|tracepoint|pmu|event_glob]",
 		NULL
 	};
 

@@ -35,7 +39,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 	setup_pager();
 
 	if (argc == 0) {
-		print_events(NULL, false);
+		print_events(NULL, false, !desc_flag);
 		return 0;
 	}
 

@@ -54,15 +58,15 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 			 strcmp(argv[i], "hwcache") == 0)
 			print_hwcache_events(NULL, false);
 		else if (strcmp(argv[i], "pmu") == 0)
-			print_pmu_events(NULL, false);
+			print_pmu_events(NULL, false, !desc_flag);
 		else if (strcmp(argv[i], "--raw-dump") == 0)
-			print_events(NULL, true);
+			print_events(NULL, true, !desc_flag);
 		else {
 			char *sep = strchr(argv[i], ':'), *s;
 			int sep_idx;
 
 			if (sep == NULL) {
-				print_events(argv[i], false);
+				print_events(argv[i], false, !desc_flag);
 				continue;
 			}
 			sep_idx = sep - argv[i];

index 1e15df1..e2badf3 100644
@@ -1231,7 +1231,7 @@ static void print_symbol_events(const char *event_glob, unsigned type,
 /*
  * Print the help text for the event symbols:
  */
-void print_events(const char *event_glob, bool name_only)
+void print_events(const char *event_glob, bool name_only, bool quiet)
 {
 	if (!name_only) {
 		printf("\n");

@@ -1246,7 +1246,7 @@ void print_events(const char *event_glob, bool name_only)
 
 	print_hwcache_events(event_glob, name_only);
 
-	print_pmu_events(event_glob, name_only);
+	print_pmu_events(event_glob, name_only, quiet);
 
 	if (event_glob != NULL)
 		return;

index df094b4..f3ef0dc 100644
@@ -100,7 +100,7 @@ void parse_events_update_lists(struct list_head *list_event,
 			       struct list_head *list_all);
 void parse_events_error(void *data, void *scanner, char const *msg);
 
-void print_events(const char *event_glob, bool name_only);
+void print_events(const char *event_glob, bool name_only, bool quiet);
 void print_events_type(u8 type);
 void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
 			     bool name_only);

index 397e400..b103932 100644
@@ -790,7 +790,7 @@ static void wordwrap(char *s, int start, int max, int corr)
 	}
 }
 
-void print_pmu_events(const char *event_glob, bool name_only)
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag)
 {
 	struct perf_pmu *pmu;
 	struct perf_pmu_alias *alias;

@@ -838,7 +838,7 @@ void print_pmu_events(const char *event_glob, bool name_only)
 			printf("%s ", aliases[j].name);
 			continue;
 		}
-		if (aliases[j].desc) {
+		if (aliases[j].desc && !quiet_flag) {
 			if (numdesc++ == 0 && printed)
 				printf("\n");
 			printf("  %-50s [", aliases[j].name);

index 87a1da4..9b22d0f 100644
@@ -42,7 +42,7 @@ int perf_pmu__format_parse(char *dir, struct list_head *head);
 
 struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
 
-void print_pmu_events(const char *event_glob, bool name_only);
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet);
 bool pmu_have_event(const char *pname, const char *name);
 
 int perf_pmu__test(void);