perf stat: Switch to cpu version of cpu_map__get()

Avoid possible bugs where the wrong index is passed with the cpu_map.

Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Vineet Singh <vineet.singh@intel.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: zhengjun.xing@intel.com
Link: https://lore.kernel.org/r/20220105061351.120843-6-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-stat.c

@@ -1323,69 +1323,63 @@ static struct option stat_options[] = {
 };
 
 static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused,
-				 struct perf_cpu_map *map, int cpu)
+						int cpu)
 {
-	return cpu_map__get_socket(map, cpu, NULL);
+	return cpu_map__get_socket_aggr_by_cpu(cpu, /*data=*/NULL);
 }
 
 static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused,
-			      struct perf_cpu_map *map, int cpu)
+					     int cpu)
 {
-	return cpu_map__get_die(map, cpu, NULL);
+	return cpu_map__get_die_aggr_by_cpu(cpu, /*data=*/NULL);
 }
 
 static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused,
-			       struct perf_cpu_map *map, int cpu)
+					      int cpu)
 {
-	return cpu_map__get_core(map, cpu, NULL);
+	return cpu_map__get_core_aggr_by_cpu(cpu, /*data=*/NULL);
 }
 
 static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused,
-			       struct perf_cpu_map *map, int cpu)
+					      int cpu)
 {
-	return cpu_map__get_node(map, cpu, NULL);
+	return cpu_map__get_node_aggr_by_cpu(cpu, /*data=*/NULL);
 }
 
 static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config,
-			       aggr_get_id_t get_id, struct perf_cpu_map *map, int idx)
+					      aggr_get_id_t get_id, int cpu)
 {
-	int cpu;
 	struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
 
-	if (idx >= map->nr)
-		return id;
-
-	cpu = map->map[idx];
-
 	if (cpu_map__aggr_cpu_id_is_empty(config->cpus_aggr_map->map[cpu]))
-		config->cpus_aggr_map->map[cpu] = get_id(config, map, idx);
+		config->cpus_aggr_map->map[cpu] = get_id(config, cpu);
 
 	id = config->cpus_aggr_map->map[cpu];
 	return id;
 }
 
 static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config,
-					struct perf_cpu_map *map, int idx)
+						       int cpu)
 {
-	return perf_stat__get_aggr(config, perf_stat__get_socket, map, idx);
+	return perf_stat__get_aggr(config, perf_stat__get_socket, cpu);
 }
 
 static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config,
-					struct perf_cpu_map *map, int idx)
+						    int cpu)
 {
-	return perf_stat__get_aggr(config, perf_stat__get_die, map, idx);
+	return perf_stat__get_aggr(config, perf_stat__get_die, cpu);
 }
 
 static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config,
-				      struct perf_cpu_map *map, int idx)
+						     int cpu)
 {
-	return perf_stat__get_aggr(config, perf_stat__get_core, map, idx);
+	return perf_stat__get_aggr(config, perf_stat__get_core, cpu);
 }
 
 static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config,
-				      struct perf_cpu_map *map, int idx)
+						     int cpu)
 {
-	return perf_stat__get_aggr(config, perf_stat__get_node, map, idx);
+	return perf_stat__get_aggr(config, perf_stat__get_node, cpu);
 }
 
 static bool term_percore_set(void)
@@ -1483,8 +1477,9 @@ static void perf_stat__exit_aggr_mode(void)
 	stat_config.cpus_aggr_map = NULL;
 }
 
-static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *map, int idx)
+static inline int perf_env__get_cpu(void *data, struct perf_cpu_map *map, int idx)
 {
+	struct perf_env *env = data;
 	int cpu;
 
 	if (idx > map->nr)
@@ -1498,10 +1493,9 @@ static inline int perf_env__get_cpu(struct perf_env *env, struct perf_cpu_map *m
 	return cpu;
 }
 
-static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data)
+static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(int cpu, void *data)
 {
 	struct perf_env *env = data;
-	int cpu = perf_env__get_cpu(env, map, idx);
 	struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
 
 	if (cpu != -1)
@@ -1510,11 +1504,15 @@ static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx
 	return id;
 }
 
-static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, void *data)
+static struct aggr_cpu_id perf_env__get_socket(struct perf_cpu_map *map, int idx, void *data)
+{
+	return perf_env__get_socket_aggr_by_cpu(perf_env__get_cpu(data, map, idx), data);
+}
+
+static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(int cpu, void *data)
 {
 	struct perf_env *env = data;
 	struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
-	int cpu = perf_env__get_cpu(env, map, idx);
 
 	if (cpu != -1) {
 		/*
@@ -1529,11 +1527,15 @@ static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, v
 	return id;
 }
 
-static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx, void *data)
+static struct aggr_cpu_id perf_env__get_die(struct perf_cpu_map *map, int idx, void *data)
+{
+	return perf_env__get_die_aggr_by_cpu(perf_env__get_cpu(data, map, idx), data);
+}
+
+static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(int cpu, void *data)
 {
 	struct perf_env *env = data;
 	struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
-	int cpu = perf_env__get_cpu(env, map, idx);
 
 	if (cpu != -1) {
 		/*
@@ -1549,15 +1551,24 @@ static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx,
 	return id;
 }
 
-static struct aggr_cpu_id perf_env__get_node(struct perf_cpu_map *map, int idx, void *data)
+static struct aggr_cpu_id perf_env__get_core(struct perf_cpu_map *map, int idx, void *data)
+{
+	return perf_env__get_core_aggr_by_cpu(perf_env__get_cpu(data, map, idx), data);
+}
+
+static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(int cpu, void *data)
 {
-	int cpu = perf_env__get_cpu(data, map, idx);
 	struct aggr_cpu_id id = cpu_map__empty_aggr_cpu_id();
 
 	id.node = perf_env__numa_node(data, cpu);
 	return id;
 }
 
+static struct aggr_cpu_id perf_env__get_node(struct perf_cpu_map *map, int idx, void *data)
+{
+	return perf_env__get_node_aggr_by_cpu(perf_env__get_cpu(data, map, idx), data);
+}
+
 static int perf_env__build_socket_map(struct perf_env *env, struct perf_cpu_map *cpus,
 				      struct cpu_aggr_map **sockp)
 {
@@ -1583,26 +1594,26 @@ static int perf_env__build_node_map(struct perf_env *env, struct perf_cpu_map *c
 }
 
 static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused,
-				      struct perf_cpu_map *map, int idx)
+						     int cpu)
 {
-	return perf_env__get_socket(map, idx, &perf_stat.session->header.env);
+	return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env);
 }
 static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused,
-				   struct perf_cpu_map *map, int idx)
+						  int cpu)
 {
-	return perf_env__get_die(map, idx, &perf_stat.session->header.env);
+	return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env);
 }
 
 static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused,
-				    struct perf_cpu_map *map, int idx)
+						   int cpu)
 {
-	return perf_env__get_core(map, idx, &perf_stat.session->header.env);
+	return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env);
 }
 
 static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused,
-				    struct perf_cpu_map *map, int idx)
+						   int cpu)
 {
-	return perf_env__get_node(map, idx, &perf_stat.session->header.env);
+	return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env);
 }
 
 static int perf_stat_init_aggr_mode_file(struct perf_stat *st)

tools/perf/util/stat-display.c

@@ -341,8 +341,7 @@ static int first_shadow_cpu(struct perf_stat_config *config,
 
 	cpus = evsel__cpus(evsel);
 	perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
-		if (cpu_map__compare_aggr_cpu_id(config->aggr_get_id(config, cpus, idx),
+		if (cpu_map__compare_aggr_cpu_id(config->aggr_get_id(config, cpu), id))
-						 id))
 			return cpu;
 	}
 	return 0;
@@ -525,8 +524,7 @@ static void aggr_update_shadow(struct perf_stat_config *config,
 			cpus = evsel__cpus(counter);
 			val = 0;
 			perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
-				(void)cpu;
+				s2 = config->aggr_get_id(config, cpu);
-				s2 = config->aggr_get_id(config, cpus, idx);
 				if (!cpu_map__compare_aggr_cpu_id(s2, id))
 					continue;
 				val += perf_counts(counter->counts, idx, 0)->val;
@@ -642,8 +640,7 @@ static void aggr_cb(struct perf_stat_config *config,
 	perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
 		struct perf_counts_values *counts;
 
-		(void)cpu;
+		s2 = config->aggr_get_id(config, cpu);
-		s2 = config->aggr_get_id(config, cpus, idx);
 		if (!cpu_map__compare_aggr_cpu_id(s2, ad->id))
 			continue;
 		if (first)
@@ -1217,7 +1214,7 @@ static void print_percore_thread(struct perf_stat_config *config,
 
 	cpus = evsel__cpus(counter);
 	perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
-		s2 = config->aggr_get_id(config, cpus, idx);
+		s2 = config->aggr_get_id(config, cpu);
 		for (s = 0; s < config->aggr_map->nr; s++) {
 			id = config->aggr_map->map[s];
 			if (cpu_map__compare_aggr_cpu_id(s2, id))

tools/perf/util/stat.h

@@ -108,8 +108,7 @@ struct runtime_stat {
 	struct rblist value_list;
 };
 
-typedef struct aggr_cpu_id (*aggr_get_id_t)(struct perf_stat_config *config,
+typedef struct aggr_cpu_id (*aggr_get_id_t)(struct perf_stat_config *config, int cpu);
-			     struct perf_cpu_map *m, int cpu);
 
 struct perf_stat_config {
 	enum aggr_mode		 aggr_mode;