perf stat aggregation: Add separate core member

Add core as a separate member so that it doesn't have to be packed into
the int value.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-12-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -1402,15 +1402,12 @@ static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx,
 	if (cpu != -1) {
 		/*
 		 * core_id is relative to socket and die,
-		 * we need a global id. So we combine
-		 * socket + die id + core id
+		 * we need a global id. So we set
+		 * socket, die id and core id
 		 */
-		if (WARN_ONCE(env->cpu[cpu].core_id >> 16, "The core id number is too big.\n"))
-			return cpu_map__empty_aggr_cpu_id();
-
 		id.socket = env->cpu[cpu].socket_id;
 		id.die = env->cpu[cpu].die_id;
-		id.id = env->cpu[cpu].core_id & 0xffff;
+		id.core = env->cpu[cpu].core_id;
 	}
 
 	return id;

tools/perf/tests/topology.c

@@ -111,14 +111,15 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
 	for (i = 0; i < map->nr; i++) {
 		id = cpu_map__get_core(map, i, NULL);
 		TEST_ASSERT_VAL("Core map - Core ID doesn't match",
-			session->header.env.cpu[map->map[i]].core_id == cpu_map__id_to_cpu(id.id));
+			session->header.env.cpu[map->map[i]].core_id == id.core);
 
 		TEST_ASSERT_VAL("Core map - Socket ID doesn't match",
 			session->header.env.cpu[map->map[i]].socket_id == id.socket);
 
 		TEST_ASSERT_VAL("Core map - Die ID doesn't match",
 			session->header.env.cpu[map->map[i]].die_id == id.die);
 		TEST_ASSERT_VAL("Core map - Node ID is set", id.node == -1);
+		TEST_ASSERT_VAL("Core map - ID is set", id.id == -1);
 	}
 
 	// Test that die ID contains socket and die
@@ -132,6 +133,7 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
 
 		TEST_ASSERT_VAL("Die map - Node ID is set", id.node == -1);
 		TEST_ASSERT_VAL("Die map - ID is set", id.id == -1);
+		TEST_ASSERT_VAL("Die map - Core is set", id.core == -1);
 	}
 
 	// Test that socket ID contains only socket
@@ -143,6 +145,7 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
 		TEST_ASSERT_VAL("Socket map - Node ID is set", id.node == -1);
 		TEST_ASSERT_VAL("Socket map - Die ID is set", id.die == -1);
 		TEST_ASSERT_VAL("Socket map - ID is set", id.id == -1);
+		TEST_ASSERT_VAL("Socket map - Core is set", id.core == -1);
 	}
 
 	// Test that node ID contains only node
@@ -153,6 +156,7 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
 		TEST_ASSERT_VAL("Node map - ID is set", id.id == -1);
 		TEST_ASSERT_VAL("Node map - Socket is set", id.socket == -1);
 		TEST_ASSERT_VAL("Node map - Die ID is set", id.die == -1);
+		TEST_ASSERT_VAL("Node map - Core is set", id.core == -1);
 	}
 	perf_session__delete(session);
 

tools/perf/util/cpumap.c

@@ -154,8 +154,10 @@ static int cmp_aggr_cpu_id(const void *a_pointer, const void *b_pointer)
 		return a->node - b->node;
 	else if (a->socket != b->socket)
 		return a->socket - b->socket;
-	else
+	else if (a->die != b->die)
 		return a->die - b->die;
+	else
+		return a->core - b->core;
 }
 
 int cpu_map__build_map(struct perf_cpu_map *cpus, struct cpu_aggr_map **res,
@@ -258,10 +260,7 @@ struct aggr_cpu_id cpu_map__get_core(struct perf_cpu_map *map, int idx, void *da
 	 * core_id is relative to socket and die, we need a global id.
 	 * So we combine the result from cpu_map__get_die with the core id
 	 */
-	if (WARN_ONCE(cpu >> 16, "The core id number is too big.\n"))
-		return cpu_map__empty_aggr_cpu_id();
-
-	id.id = (cpu & 0xffff);
+	id.core = cpu;
 	return id;
 }
 
@@ -620,15 +619,17 @@ bool cpu_map__compare_aggr_cpu_id(struct aggr_cpu_id a, struct aggr_cpu_id b)
 	return a.id == b.id &&
 		a.node == b.node &&
 		a.socket == b.socket &&
-		a.die == b.die;
+		a.die == b.die &&
+		a.core == b.core;
 }
 
 bool cpu_map__aggr_cpu_id_is_empty(struct aggr_cpu_id a)
 {
 	return a.id == -1 &&
 		a.node == -1 &&
 		a.socket == -1 &&
-		a.die == -1;
+		a.die == -1 &&
+		a.core == -1;
 }
 
 struct aggr_cpu_id cpu_map__empty_aggr_cpu_id(void)
@@ -637,7 +638,8 @@ struct aggr_cpu_id cpu_map__empty_aggr_cpu_id(void)
 		.id = -1,
 		.node = -1,
 		.socket = -1,
-		.die = -1
+		.die = -1,
+		.core = -1
 	};
 	return ret;
 }

tools/perf/util/cpumap.h

@@ -12,6 +12,7 @@ struct aggr_cpu_id {
 	int node;
 	int socket;
 	int die;
+	int core;
 };
 
 struct cpu_aggr_map {
@@ -50,11 +51,6 @@ static inline int cpu_map__socket(struct perf_cpu_map *sock, int s)
 	return sock->map[s];
 }
 
-static inline int cpu_map__id_to_cpu(int id)
-{
-	return id & 0xffff;
-}
-
 int cpu__setup_cpunode_map(void);
 
 int cpu__max_node(void);

tools/perf/util/stat-display.c

@@ -76,7 +76,7 @@ static void aggr_printout(struct perf_stat_config *config,
 			id.socket,
 			id.die,
 			config->csv_output ? 0 : -8,
-			cpu_map__id_to_cpu(id.id),
+			id.core,
 			config->csv_sep,
 			config->csv_output ? 0 : 4,
 			nr,
@@ -116,11 +116,11 @@ static void aggr_printout(struct perf_stat_config *config,
 				id.socket,
 				id.die,
 				config->csv_output ? 0 : -3,
-				cpu_map__id_to_cpu(id.id), config->csv_sep);
-		} else if (id.id > -1) {
+				id.core, config->csv_sep);
+		} else if (id.core > -1) {
 			fprintf(config->output, "CPU%*d%s",
 				config->csv_output ? 0 : -7,
-				evsel__cpus(evsel)->map[id.id],
+				evsel__cpus(evsel)->map[id.core],
 				config->csv_sep);
 		}
 		break;
@@ -326,7 +326,7 @@ static int first_shadow_cpu(struct perf_stat_config *config,
 	int i;
 
 	if (config->aggr_mode == AGGR_NONE)
-		return id.id;
+		return id.core;
 
 	if (!config->aggr_get_id)
 		return 0;
@@ -658,7 +658,7 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
 	uval = val * counter->scale;
 	if (cpu != -1) {
 		id = cpu_map__empty_aggr_cpu_id();
-		id.id = cpu;
+		id.core = cpu;
 	}
 	printout(config, id, nr, counter, uval,
 		 prefix, run, ena, 1.0, &rt_stat);
@@ -871,7 +871,7 @@ static void print_counter(struct perf_stat_config *config,
 
 		uval = val * counter->scale;
 		id = cpu_map__empty_aggr_cpu_id();
-		id.id = cpu;
+		id.core = cpu;
 		printout(config, id, 0, counter, uval, prefix,
 			 run, ena, 1.0, &rt_stat);
 
@@ -898,7 +898,7 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
 			fputs(prefix, config->output);
 		evlist__for_each_entry(evlist, counter) {
 			id = cpu_map__empty_aggr_cpu_id();
-			id.id = cpu;
+			id.core = cpu;
 			if (first) {
 				aggr_printout(config, counter, id, 0);
 				first = false;