More updates for event lists in perf list

More updates for event lists in perf list

[Andi Kleen]

This adds support for the event topics that Ingo requested, and
replaces the earlier event group patch. JSON files now have a Topic
header that is used by perf list to group events.

This applies on top of Sukadev's patchkit. In addition
the Intel events also need to be pulled from 

git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git perf/intel-json-files-3

-Andi

[PATCH 1/3] perf, tools: Add override support for event list CPUID

[Andi Kleen]

From: Andi Kleen <ak@linux.intel.com>

Add a PERF_CPUID variable to override the CPUID of the current CPU.
This is useful for testing, so that all event lists can be tested on a single
system.

v2: Fix double free in earlier version.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/util/pmu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 578a537..5c30f89 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -474,7 +474,11 @@ static int pmu_add_cpu_aliases(void *data)
 	struct pmu_event *pe;
 	char *cpuid;
 
-	cpuid = get_cpuid_str();
+	cpuid = getenv("PERF_CPUID");
+	if (cpuid)
+		cpuid = strdup(cpuid);
+	if (!cpuid)
+		cpuid = get_cpuid_str();
 	if (!cpuid)
 		return 0;
 
-- 
2.4.1

[PATCH 2/3] perf, tools: Support long descriptions with perf list -v

[Andi Kleen]

From: Andi Kleen <ak@linux.intel.com>

Previously we were dropping the useful longer descriptions that some
events have in the event list completely. This patch makes them appear with
perf list.

Old perf list:

baclears:
  baclears.all
       [Counts the number of baclears]

vs new:

perf list -v:
...
baclears:
  baclears.all
       [The BACLEARS event counts the number of times the front end is resteered, mainly when
        the Branch Prediction Unit cannot provide a correct prediction and this is corrected
        by the Branch Address Calculator at the front end. The BACLEARS.ANY event counts the
        number of baclears for any type of branch]

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/builtin-list.c          |  9 ++++++---
 tools/perf/pmu-events/jevents.c    | 29 ++++++++++++++++++++---------
 tools/perf/pmu-events/jevents.h    |  2 +-
 tools/perf/pmu-events/pmu-events.h |  1 +
 tools/perf/util/parse-events.c     |  4 ++--
 tools/perf/util/parse-events.h     |  2 +-
 tools/perf/util/pmu.c              | 17 ++++++++++++-----
 tools/perf/util/pmu.h              |  4 +++-
 8 files changed, 46 insertions(+), 22 deletions(-)

diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 3f058f7..c912368 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -22,10 +22,13 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	int i;
 	bool raw_dump = false;
+	bool long_desc_flag = false;
 	struct option list_options[] = {
 		OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
 		OPT_BOOLEAN('d', "desc", &desc_flag,
 			    "Print extra event descriptions. --no-desc to not print."),
+		OPT_BOOLEAN('v', "long-desc", &long_desc_flag,
+			    "Print longer event descriptions."),
 		OPT_END()
 	};
 	const char * const list_usage[] = {
@@ -44,7 +47,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 		printf("\nList of pre-defined events (to be used in -e):\n\n");
 
 	if (argc == 0) {
-		print_events(NULL, raw_dump, !desc_flag);
+		print_events(NULL, raw_dump, !desc_flag, long_desc_flag);
 		return 0;
 	}
 
@@ -63,13 +66,13 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
 			 strcmp(argv[i], "hwcache") == 0)
 			print_hwcache_events(NULL, raw_dump);
 		else if (strcmp(argv[i], "pmu") == 0)
-			print_pmu_events(NULL, raw_dump, !desc_flag);
+			print_pmu_events(NULL, raw_dump, !desc_flag, long_desc_flag);
 		else {
 			char *sep = strchr(argv[i], ':'), *s;
 			int sep_idx;
 
 			if (sep == NULL) {
-				print_events(argv[i], raw_dump, !desc_flag);
+				print_events(argv[i], raw_dump, !desc_flag, long_desc_flag);
 				continue;
 			}
 			sep_idx = sep - argv[i];
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index 43651cc..da9408c 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -202,7 +202,7 @@ static void print_events_table_prefix(FILE *fp, const char *tblname)
 }
 
 static int print_events_table_entry(void *data, char *name, char *event,
-				    char *desc)
+				    char *desc, char *long_desc)
 {
 	FILE *outfp = data;
 	/*
@@ -214,7 +214,8 @@ static int print_events_table_entry(void *data, char *name, char *event,
 	fprintf(outfp, "\t.name = \"%s\",\n", name);
 	fprintf(outfp, "\t.event = \"%s\",\n", event);
 	fprintf(outfp, "\t.desc = \"%s\",\n", desc);
-
+	if (long_desc && long_desc[0])
+		fprintf(outfp, "\t.long_desc = \"%s\"", long_desc);
 	fprintf(outfp, "},\n");
 
 	return 0;
@@ -234,7 +235,7 @@ static void print_events_table_suffix(FILE *outfp)
 
 /* Call func with each event in the json file */
 int json_events(const char *fn,
-	  int (*func)(void *data, char *name, char *event, char *desc),
+	  int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
 	  void *data)
 {
 	int err = -EIO;
@@ -252,7 +253,8 @@ int json_events(const char *fn,
 	EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array");
 	tok = tokens + 1;
 	for (i = 0; i < tokens->size; i++) {
-		char *event = NULL, *desc = NULL, *name = NULL;
+		char *event = NULL, *desc = NULL, *name = NULL, *long_desc = NULL;
+		char *extra_desc = NULL;
 		struct msrmap *msr = NULL;
 		jsmntok_t *msrval = NULL;
 		jsmntok_t *precise = NULL;
@@ -278,6 +280,9 @@ int json_events(const char *fn,
 			} else if (json_streq(map, field, "BriefDescription")) {
 				addfield(map, &desc, "", "", val);
 				fixdesc(desc);
+			} else if (json_streq(map, field, "PublicDescription")) {
+				addfield(map, &long_desc, "", "", val);
+				fixdesc(long_desc);
 			} else if (json_streq(map, field, "PEBS") && nz) {
 				precise = val;
 			} else if (json_streq(map, field, "MSRIndex") && nz) {
@@ -286,10 +291,10 @@ int json_events(const char *fn,
 				msrval = val;
 			} else if (json_streq(map, field, "Errata") &&
 				   !json_streq(map, val, "null")) {
-				addfield(map, &desc, ". ",
+				addfield(map, &extra_desc, ". ",
 					" Spec update: ", val);
 			} else if (json_streq(map, field, "Data_LA") && nz) {
-				addfield(map, &desc, ". ",
+				addfield(map, &extra_desc, ". ",
 					" Supports address when precise",
 					NULL);
 			}
@@ -297,19 +302,25 @@ int json_events(const char *fn,
 		}
 		if (precise && !strstr(desc, "(Precise Event)")) {
 			if (json_streq(map, precise, "2"))
-				addfield(map, &desc, " ", "(Must be precise)",
+				addfield(map, &extra_desc, " ", "(Must be precise)",
 						NULL);
 			else
-				addfield(map, &desc, " ",
+				addfield(map, &extra_desc, " ",
 						"(Precise event)", NULL);
 		}
+		if (desc && extra_desc)
+			addfield(map, &desc, " ", extra_desc, NULL);
+		if (long_desc && extra_desc)
+			addfield(map, &long_desc, " ", extra_desc, NULL);
 		if (msr != NULL)
 			addfield(map, &event, ",", msr->pname, msrval);
 		fixname(name);
-		err = func(data, name, event, desc);
+		err = func(data, name, event, desc, long_desc);
 		free(event);
 		free(desc);
 		free(name);
+		free(extra_desc);
+		free(long_desc);
 		if (err)
 			break;
 		tok += j;
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
index 996601f..2168ad4 100644
--- a/tools/perf/pmu-events/jevents.h
+++ b/tools/perf/pmu-events/jevents.h
@@ -2,7 +2,7 @@
 #define JEVENTS_H 1
 
 int json_events(const char *fn,
-		int (*func)(void *data, char *name, char *event, char *desc),
+		int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
 		void *data);
 char *get_cpu_str(void);
 
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 39fec04..711f049 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -8,6 +8,7 @@ struct pmu_event {
 	const char *name;
 	const char *event;
 	const char *desc;
+	const char *long_desc;
 };
 
 /*
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index c660061..a6bf781 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1419,7 +1419,7 @@ out_enomem:
 /*
  * Print the help text for the event symbols:
  */
-void print_events(const char *event_glob, bool name_only, bool quiet_flag)
+void print_events(const char *event_glob, bool name_only, bool quiet_flag, bool long_desc)
 {
 	print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
 			    event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
@@ -1429,7 +1429,7 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag)
 
 	print_hwcache_events(event_glob, name_only);
 
-	print_pmu_events(event_glob, name_only, quiet_flag);
+	print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
 
 	if (event_glob != NULL)
 		return;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index cdb100e..698cf45 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -115,7 +115,7 @@ 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, bool quiet);
+void print_events(const char *event_glob, bool name_only, bool quiet, bool long_desc);
 
 struct event_symbol {
 	const char	*symbol;
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 5c30f89..a85eade 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -201,7 +201,8 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
 	return 0;
 }
 
-static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir, char *desc __maybe_unused, char *val)
+static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir, char *desc __maybe_unused, char *val,
+				 char *long_desc)
 {
 	struct perf_pmu_alias *alias;
 	int ret;
@@ -234,6 +235,9 @@ static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir,
 	}
 
 	alias->desc = desc ? strdup(desc) : NULL;
+	alias->long_desc = long_desc ?
+			strdup(long_desc) :
+			desc ? strdup(desc) : NULL;
 
 	list_add_tail(&alias->list, list);
 
@@ -250,7 +254,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
 		return -EINVAL;
 	buf[ret] = 0;
 
-	return __perf_pmu__new_alias(list, name, dir, NULL, buf);
+	return __perf_pmu__new_alias(list, name, dir, NULL, buf, NULL);
 }
 
 static inline bool pmu_alias_info_file(char *name)
@@ -503,7 +507,8 @@ static int pmu_add_cpu_aliases(void *data)
 
 		/* need type casts to override 'const' */
 		__perf_pmu__new_alias(head, (char *)pe->name, NULL,
-				(char *)pe->desc, (char *)pe->event);
+				(char *)pe->desc, (char *)pe->event,
+				(char *)pe->long_desc);
 	}
 
 	free(cpuid);
@@ -976,7 +981,8 @@ static void wordwrap(char *s, int start, int max, int corr)
 	}
 }
 
-void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag)
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
+		      bool long_desc)
 {
 	struct perf_pmu *pmu;
 	struct perf_pmu_alias *alias;
@@ -1021,7 +1027,8 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag)
 								  pmu, alias);
 			aliases[j].name = strdup(aliases[j].name);
 			/* failure harmless */
-			aliases[j].desc = alias->desc;
+			aliases[j].desc = long_desc ? alias->long_desc :
+						      alias->desc;
 			j++;
 		}
 		if (pmu->selectable) {
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 3ca632b..e0f7ed3 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -38,6 +38,7 @@ struct perf_pmu_info {
 struct perf_pmu_alias {
 	char *name;
 	char *desc;
+	char *long_desc;
 	struct list_head terms; /* HEAD struct parse_events_term -> list */
 	struct list_head list;  /* ELEM */
 	char unit[UNIT_MAX_LEN+1];
@@ -67,7 +68,8 @@ 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, bool quiet);
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet,
+			bool long_desc);
 bool pmu_have_event(const char *pname, const char *name);
 
 int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
-- 
2.4.1

[PATCH 3/3] perf, tools: Add support for event list topics

[Andi Kleen]

From: Andi Kleen <ak@linux.intel.com>

Add support to group the output of perf list by the Topic field
in the JSON file.

Example output:

% perf list
...
Cache:
  l1d.replacement
       [L1D data line replacements]
  l1d_pend_miss.pending
       [L1D miss oustandings duration in cycles]
  l1d_pend_miss.pending_cycles
       [Cycles with L1D load Misses outstanding]
  l2_l1d_wb_rqsts.all
       [Not rejected writebacks from L1D to L2 cache lines in any state]
  l2_l1d_wb_rqsts.hit_e
       [Not rejected writebacks from L1D to L2 cache lines in E state]
  l2_l1d_wb_rqsts.hit_m
       [Not rejected writebacks from L1D to L2 cache lines in M state]

...
Pipeline:
  arith.fpu_div
       [Divide operations executed]
  arith.fpu_div_active
       [Cycles when divider is busy executing divide operations]
  baclears.any
       [Counts the total number when the front end is resteered, mainly when the BPU cannot provide a correct prediction and this is corrected by
        other branch handling mechanisms at the front end]
  br_inst_exec.all_branches
       [Speculative and retired branches]
  br_inst_exec.all_conditional
       [Speculative and retired macro-conditional branches]
  br_inst_exec.all_direct_jmp
       [Speculative and retired macro-unconditional branches excluding calls and indirects]
  br_inst_exec.all_direct_near_call
       [Speculative and retired direct near calls]
  br_inst_exec.all_indirect_jump_non_call_ret

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
 tools/perf/pmu-events/jevents.c    | 16 +++++++++++-----
 tools/perf/pmu-events/jevents.h    |  3 ++-
 tools/perf/pmu-events/pmu-events.h |  1 +
 tools/perf/util/pmu.c              | 34 ++++++++++++++++++++++++----------
 tools/perf/util/pmu.h              |  1 +
 5 files changed, 39 insertions(+), 16 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index da9408c..1d959a3 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -202,7 +202,7 @@ static void print_events_table_prefix(FILE *fp, const char *tblname)
 }
 
 static int print_events_table_entry(void *data, char *name, char *event,
-				    char *desc, char *long_desc)
+				    char *desc, char *long_desc, char *topic)
 {
 	FILE *outfp = data;
 	/*
@@ -215,7 +215,9 @@ static int print_events_table_entry(void *data, char *name, char *event,
 	fprintf(outfp, "\t.event = \"%s\",\n", event);
 	fprintf(outfp, "\t.desc = \"%s\",\n", desc);
 	if (long_desc && long_desc[0])
-		fprintf(outfp, "\t.long_desc = \"%s\"", long_desc);
+		fprintf(outfp, "\t.long_desc = \"%s\",\n", long_desc);
+	if (topic)
+		fprintf(outfp, "\t.topic = \"%s\",\n", topic);
 	fprintf(outfp, "},\n");
 
 	return 0;
@@ -235,7 +237,8 @@ static void print_events_table_suffix(FILE *outfp)
 
 /* Call func with each event in the json file */
 int json_events(const char *fn,
-	  int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
+	  int (*func)(void *data, char *name, char *event, char *desc,
+		      char *long_desc, char *topic),
 	  void *data)
 {
 	int err = -EIO;
@@ -254,7 +257,7 @@ int json_events(const char *fn,
 	tok = tokens + 1;
 	for (i = 0; i < tokens->size; i++) {
 		char *event = NULL, *desc = NULL, *name = NULL, *long_desc = NULL;
-		char *extra_desc = NULL;
+		char *extra_desc = NULL, *topic = NULL;
 		struct msrmap *msr = NULL;
 		jsmntok_t *msrval = NULL;
 		jsmntok_t *precise = NULL;
@@ -293,6 +296,8 @@ int json_events(const char *fn,
 				   !json_streq(map, val, "null")) {
 				addfield(map, &extra_desc, ". ",
 					" Spec update: ", val);
+			} else if (json_streq(map, field, "Topic")) {
+				addfield(map, &topic, "", "", val);
 			} else if (json_streq(map, field, "Data_LA") && nz) {
 				addfield(map, &extra_desc, ". ",
 					" Supports address when precise",
@@ -315,12 +320,13 @@ int json_events(const char *fn,
 		if (msr != NULL)
 			addfield(map, &event, ",", msr->pname, msrval);
 		fixname(name);
-		err = func(data, name, event, desc, long_desc);
+		err = func(data, name, event, desc, long_desc, topic);
 		free(event);
 		free(desc);
 		free(name);
 		free(extra_desc);
 		free(long_desc);
+		free(topic);
 		if (err)
 			break;
 		tok += j;
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
index 2168ad4..a556ab1 100644
--- a/tools/perf/pmu-events/jevents.h
+++ b/tools/perf/pmu-events/jevents.h
@@ -2,7 +2,8 @@
 #define JEVENTS_H 1
 
 int json_events(const char *fn,
-		int (*func)(void *data, char *name, char *event, char *desc, char *long_desc),
+		int (*func)(void *data, char *name, char *event, char *desc,
+			    char *long_desc, char *topic),
 		void *data);
 char *get_cpu_str(void);
 
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 711f049..6b69f4b 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -9,6 +9,7 @@ struct pmu_event {
 	const char *event;
 	const char *desc;
 	const char *long_desc;
+	const char *topic;
 };
 
 /*
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index a85eade..7af39a3 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -202,7 +202,7 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
 }
 
 static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir, char *desc __maybe_unused, char *val,
-				 char *long_desc)
+				 char *long_desc, char *topic)
 {
 	struct perf_pmu_alias *alias;
 	int ret;
@@ -238,6 +238,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir,
 	alias->long_desc = long_desc ?
 			strdup(long_desc) :
 			desc ? strdup(desc) : NULL;
+	alias->topic = topic ? strdup(topic) : NULL;
 
 	list_add_tail(&alias->list, list);
 
@@ -254,7 +255,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
 		return -EINVAL;
 	buf[ret] = 0;
 
-	return __perf_pmu__new_alias(list, name, dir, NULL, buf, NULL);
+	return __perf_pmu__new_alias(list, name, dir, NULL, buf, NULL, NULL);
 }
 
 static inline bool pmu_alias_info_file(char *name)
@@ -508,7 +509,8 @@ static int pmu_add_cpu_aliases(void *data)
 		/* need type casts to override 'const' */
 		__perf_pmu__new_alias(head, (char *)pe->name, NULL,
 				(char *)pe->desc, (char *)pe->event,
-				(char *)pe->long_desc);
+				(char *)pe->long_desc,
+				(char *)pe->topic);
 	}
 
 	free(cpuid);
@@ -943,19 +945,25 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
 	return buf;
 }
 
-struct pair {
+struct sevent {
 	char *name;
 	char *desc;
+	char *topic;
 };
 
-static int cmp_pair(const void *a, const void *b)
+static int cmp_sevent(const void *a, const void *b)
 {
-	const struct pair *as = a;
-	const struct pair *bs = b;
+	const struct sevent *as = a;
+	const struct sevent *bs = b;
 
 	/* Put extra events last */
 	if (!!as->desc != !!bs->desc)
 		return !!as->desc - !!bs->desc;
+	if (as->topic && bs->topic) {
+		int n = strcmp(as->topic, bs->topic);
+		if (n)
+			return n;
+	}
 	return strcmp(as->name, bs->name);
 }
 
@@ -989,9 +997,10 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
 	char buf[1024];
 	int printed = 0;
 	int len, j;
-	struct pair *aliases;
+	struct sevent *aliases;
 	int numdesc = 0;
 	int columns = pager_get_columns();
+	char *topic = NULL;
 
 	pmu = NULL;
 	len = 0;
@@ -1001,7 +1010,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
 		if (pmu->selectable)
 			len++;
 	}
-	aliases = zalloc(sizeof(struct pair) * len);
+	aliases = zalloc(sizeof(struct sevent) * len);
 	if (!aliases)
 		goto out_enomem;
 	pmu = NULL;
@@ -1029,6 +1038,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
 			/* failure harmless */
 			aliases[j].desc = long_desc ? alias->long_desc :
 						      alias->desc;
+			aliases[j].topic = alias->topic;
 			j++;
 		}
 		if (pmu->selectable) {
@@ -1040,7 +1050,7 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
 		}
 	}
 	len = j;
-	qsort(aliases, len, sizeof(struct pair), cmp_pair);
+	qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
 	for (j = 0; j < len; j++) {
 		if (name_only) {
 			printf("%s ", aliases[j].name);
@@ -1049,6 +1059,10 @@ void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
 		if (aliases[j].desc && !quiet_flag) {
 			if (numdesc++ == 0)
 				printf("\n");
+			if (aliases[j].topic && (!topic || strcmp(topic, aliases[j].topic))) {
+				printf("%s%s:\n", topic ? "\n" : "", aliases[j].topic);
+				topic = aliases[j].topic;
+			}
 			printf("  %-50s\n", aliases[j].name);
 			printf("%*s", 8, "[");
 			wordwrap(aliases[j].desc, 8, columns, 0);
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index e0f7ed3..baaee6e 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -39,6 +39,7 @@ struct perf_pmu_alias {
 	char *name;
 	char *desc;
 	char *long_desc;
+	char *topic;
 	struct list_head terms; /* HEAD struct parse_events_term -> list */
 	struct list_head list;  /* ELEM */
 	char unit[UNIT_MAX_LEN+1];
-- 
2.4.1

Re: More updates for event lists in perf list

[Sukadev Bhattiprolu]

Andi Kleen [andi@firstfloor.org] wrote:
| This adds support for the event topics that Ingo requested, and
| replaces the earlier event group patch. JSON files now have a Topic
| header that is used by perf list to group events.
| 
| This applies on top of Sukadev's patchkit. In addition
| the Intel events also need to be pulled from 
| 
| git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git perf/intel-json-files-3

I addressed comments, rebased to Arnaldo's tree and pushed all patches to:

	https://github.com/sukadev/linux.git

Branches:

	json-v12		(code only)
	json-files-3		(x86 and powerpc data files only)

Please let me know if they work for you. I will email the patches for
the code in a day or so. 

Sukadev

Re: More updates for event lists in perf list

[Jiri Olsa]

On Sun, May 31, 2015 at 08:33:10PM -0700, Sukadev Bhattiprolu wrote:
> Andi Kleen [andi@firstfloor.org] wrote:
> | This adds support for the event topics that Ingo requested, and
> | replaces the earlier event group patch. JSON files now have a Topic
> | header that is used by perf list to group events.
> | 
> | This applies on top of Sukadev's patchkit. In addition
> | the Intel events also need to be pulled from 
> | 
> | git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git perf/intel-json-files-3
> 
> I addressed comments, rebased to Arnaldo's tree and pushed all patches to:
> 
> 	https://github.com/sukadev/linux.git
> 
> Branches:
> 
> 	json-v12		(code only)
> 	json-files-3		(x86 and powerpc data files only)

please make also one merged branch and advertise
it in the patchset.. so people can do just single
checkout and try the code with data files

thanks,
jirka

Re: [PATCH 1/3] perf, tools: Add override support for event list CPUID

[Jiri Olsa]

On Sun, May 31, 2015 at 09:11:34AM -0700, Andi Kleen wrote:
> From: Andi Kleen <ak@linux.intel.com>
> 
> Add a PERF_CPUID variable to override the CPUID of the current CPU.
> This is useful for testing, so that all event lists 

.. within a current architecture (x86, powerpc) ..

> can be tested on a single
> system.
> 
> v2: Fix double free in earlier version.
> Signed-off-by: Andi Kleen <ak@linux.intel.com>
> ---
>  tools/perf/util/pmu.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
> index 578a537..5c30f89 100644
> --- a/tools/perf/util/pmu.c
> +++ b/tools/perf/util/pmu.c
> @@ -474,7 +474,11 @@ static int pmu_add_cpu_aliases(void *data)
>  	struct pmu_event *pe;
>  	char *cpuid;
>  
> -	cpuid = get_cpuid_str();
> +	cpuid = getenv("PERF_CPUID");
> +	if (cpuid)
> +		cpuid = strdup(cpuid);
> +	if (!cpuid)
> +		cpuid = get_cpuid_str();
>  	if (!cpuid)
>  		return 0;

I tried and it's hard to actually say you're looking on another
CPU events. Could we advertise the CPUID in perf list? Or at least
some pr_debug print.

thanks,
jirka