With no aggregration, such as 'perf stat -A', the aggr_cpu_id lacks a
way to describe per CPU aggregation and the core is set to the CPU in
places like print_counter_aggrdata in stat-display.c. Setting the core
to the CPU is undesirable as the CPU will exceed valid core values and
lead to confusion. Add a CPU variable to address this.
Signed-off-by: Ian Rogers <irogers at google.com>
---
tools/perf/tests/topology.c | 19 +++++++++++++++++++
tools/perf/util/cpumap.c | 23 ++++++++++++++++++++---
tools/perf/util/cpumap.h | 8 ++++++++
3 files changed, 47 insertions(+), 3 deletions(-)
diff --git a/tools/perf/tests/topology.c b/tools/perf/tests/topology.c
index cb29ea7ec409..33e4cb81265c 100644
--- a/tools/perf/tests/topology.c
+++ b/tools/perf/tests/topology.c
@@ -119,6 +119,22 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
session->header.env.cpu[i].socket_id);
}
+ // Test that CPU ID contains socket, die, core and CPU
+ for (i = 0; i < map->nr; i++) {
+ id = aggr_cpu_id__cpu(perf_cpu_map__cpu(map, i), NULL);
+ TEST_ASSERT_VAL("Cpu map - CPU ID doesn't match", map->map[i] == id.cpu);
+
+ TEST_ASSERT_VAL("Cpu map - Core ID doesn't match",
+ session->header.env.cpu[map->map[i]].core_id == id.core);
+ TEST_ASSERT_VAL("Cpu map - Socket ID doesn't match",
+ session->header.env.cpu[map->map[i]].socket_id == id.socket);
+
+ TEST_ASSERT_VAL("Cpu map - Die ID doesn't match",
+ session->header.env.cpu[map->map[i]].die_id == id.die);
+ TEST_ASSERT_VAL("Cpu map - Node ID is set", id.node == -1);
+ TEST_ASSERT_VAL("Cpu map - Thread is set", id.thread == -1);
+ }
+
// Test that core ID contains socket, die and core
for (i = 0; i < map->nr; i++) {
id = aggr_cpu_id__core(perf_cpu_map__cpu(map, i), NULL);
@@ -145,6 +161,7 @@ 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 - Core is set", id.core == -1);
+ TEST_ASSERT_VAL("Die map - CPU is set", id.cpu == -1);
TEST_ASSERT_VAL("Die map - Thread is set", id.thread == -1);
}
@@ -157,6 +174,7 @@ 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 - Core is set", id.core == -1);
+ TEST_ASSERT_VAL("Socket map - CPU is set", id.cpu == -1);
TEST_ASSERT_VAL("Socket map - Thread is set", id.thread == -1);
}
@@ -168,6 +186,7 @@ static int check_cpu_topology(char *path, struct perf_cpu_map *map)
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);
+ TEST_ASSERT_VAL("Node map - CPU is set", id.cpu == -1);
TEST_ASSERT_VAL("Node map - Thread is set", id.thread == -1);
}
perf_session__delete(session);
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
index 985c87f1f1ca..a535fd360d46 100644
--- a/tools/perf/util/cpumap.c
+++ b/tools/perf/util/cpumap.c
@@ -253,6 +253,20 @@ struct aggr_cpu_id aggr_cpu_id__core(int cpu, void *data)
}
+struct aggr_cpu_id aggr_cpu_id__cpu(int cpu, void *data)
+{
+ struct aggr_cpu_id id;
+
+ /* aggr_cpu_id__die returns a struct with socket and die set*/
+ id = aggr_cpu_id__core(cpu, data);
+ if (aggr_cpu_id__is_empty(&id))
+ return id;
+
+ id.cpu = cpu;
+ return id;
+
+}
+
struct aggr_cpu_id aggr_cpu_id__node(int cpu, void *data __maybe_unused)
{
struct aggr_cpu_id id = aggr_cpu_id__empty();
@@ -576,7 +590,8 @@ bool aggr_cpu_id__equal(const struct aggr_cpu_id *a, const struct aggr_cpu_id *b
a->node == b->node &&
a->socket == b->socket &&
a->die == b->die &&
- a->core == b->core;
+ a->core == b->core &&
+ a->cpu == b->cpu;
}
bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a)
@@ -585,7 +600,8 @@ bool aggr_cpu_id__is_empty(const struct aggr_cpu_id *a)
a->node == -1 &&
a->socket == -1 &&
a->die == -1 &&
- a->core == -1;
+ a->core == -1 &&
+ a->cpu == -1;
}
struct aggr_cpu_id aggr_cpu_id__empty(void)
@@ -595,7 +611,8 @@ struct aggr_cpu_id aggr_cpu_id__empty(void)
.node = -1,
.socket = -1,
.die = -1,
- .core = -1
+ .core = -1,
+ .cpu = -1
};
return ret;
}
diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
index 8acef8ff8753..651c6417d3c3 100644
--- a/tools/perf/util/cpumap.h
+++ b/tools/perf/util/cpumap.h
@@ -22,6 +22,8 @@ struct aggr_cpu_id {
int die;
/** The core id as read from /sys/devices/system/cpu/cpuX/topology/core_id. */
int core;
+ /** CPU aggregation, note there is one CPU for each SMT thread. */
+ int cpu;
};
/** A collection of aggr_cpu_id values, the "built" version is sorted and uniqued. */
@@ -109,6 +111,12 @@ struct aggr_cpu_id aggr_cpu_id__die(int cpu, void *data);
* compatible with aggr_cpu_id_get_t.
*/
struct aggr_cpu_id aggr_cpu_id__core(int cpu, void *data);
+/**
+ * aggr_cpu_id__core - Create an aggr_cpu_id with the cpu, core, die and socket
+ * populated with the cpu, core, die and socket for cpu. The function signature
+ * is compatible with aggr_cpu_id_get_t.
+ */
+struct aggr_cpu_id aggr_cpu_id__cpu(int cpu, void *data);
/**
* aggr_cpu_id__node - Create an aggr_cpu_id with the numa node populated for
* cpu. The function signature is compatible with aggr_cpu_id_get_t.
--
2.34.1.307.g9b7440fafd-goog