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-rw-r--r--tools/perf/util/header.c94
-rw-r--r--tools/perf/util/header.h6
-rw-r--r--tools/perf/util/session.c1
3 files changed, 96 insertions, 5 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 41814547da15..8fd7b7de1acd 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -88,6 +88,9 @@ int write_padded(int fd, const void *bf, size_t count, size_t count_aligned)
return err;
}
+#define string_size(str) \
+ (PERF_ALIGN((strlen(str) + 1), NAME_ALIGN) + sizeof(u32))
+
static int do_write_string(int fd, const char *str)
{
u32 len, olen;
@@ -441,10 +444,13 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused,
"/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list"
struct cpu_topo {
+ u32 cpu_nr;
u32 core_sib;
u32 thread_sib;
char **core_siblings;
char **thread_siblings;
+ int *core_id;
+ int *phy_pkg_id;
};
static int build_cpu_topo(struct cpu_topo *tp, int cpu)
@@ -507,6 +513,9 @@ try_threads:
}
ret = 0;
done:
+ tp->core_id[cpu] = cpu_map__get_core_id(cpu);
+ tp->phy_pkg_id[cpu] = cpu_map__get_socket_id(cpu);
+
if(fp)
fclose(fp);
free(buf);
@@ -534,7 +543,7 @@ static struct cpu_topo *build_cpu_topology(void)
struct cpu_topo *tp;
void *addr;
u32 nr, i;
- size_t sz;
+ size_t sz, sz_id;
long ncpus;
int ret = -1;
@@ -545,17 +554,22 @@ static struct cpu_topo *build_cpu_topology(void)
nr = (u32)(ncpus & UINT_MAX);
sz = nr * sizeof(char *);
+ sz_id = nr * sizeof(int);
- addr = calloc(1, sizeof(*tp) + 2 * sz);
+ addr = calloc(1, sizeof(*tp) + 2 * sz + 2 * sz_id);
if (!addr)
return NULL;
tp = addr;
-
+ tp->cpu_nr = nr;
addr += sizeof(*tp);
tp->core_siblings = addr;
addr += sz;
tp->thread_siblings = addr;
+ addr += sz;
+ tp->core_id = addr;
+ addr += sz_id;
+ tp->phy_pkg_id = addr;
for (i = 0; i < nr; i++) {
ret = build_cpu_topo(tp, i);
@@ -598,6 +612,15 @@ static int write_cpu_topology(int fd, struct perf_header *h __maybe_unused,
if (ret < 0)
break;
}
+
+ for (i = 0; i < tp->cpu_nr; i++) {
+ ret = do_write(fd, &tp->core_id[i], sizeof(int));
+ if (ret < 0)
+ return ret;
+ ret = do_write(fd, &tp->phy_pkg_id[i], sizeof(int));
+ if (ret < 0)
+ return ret;
+ }
done:
free_cpu_topo(tp);
return ret;
@@ -938,6 +961,7 @@ static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused,
{
int nr, i;
char *str;
+ int cpu_nr = ph->env.nr_cpus_online;
nr = ph->env.nr_sibling_cores;
str = ph->env.sibling_cores;
@@ -954,6 +978,13 @@ static void print_cpu_topology(struct perf_header *ph, int fd __maybe_unused,
fprintf(fp, "# sibling threads : %s\n", str);
str += strlen(str) + 1;
}
+
+ if (ph->env.cpu != NULL) {
+ for (i = 0; i < cpu_nr; i++)
+ fprintf(fp, "# CPU %d: Core ID %d, Socket ID %d\n", i,
+ ph->env.cpu[i].core_id, ph->env.cpu[i].socket_id);
+ } else
+ fprintf(fp, "# Core ID and Socket ID information is not available\n");
}
static void free_event_desc(struct perf_evsel *events)
@@ -1582,7 +1613,7 @@ error:
return -1;
}
-static int process_cpu_topology(struct perf_file_section *section __maybe_unused,
+static int process_cpu_topology(struct perf_file_section *section,
struct perf_header *ph, int fd,
void *data __maybe_unused)
{
@@ -1590,15 +1621,22 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
u32 nr, i;
char *str;
struct strbuf sb;
+ int cpu_nr = ph->env.nr_cpus_online;
+ u64 size = 0;
+
+ ph->env.cpu = calloc(cpu_nr, sizeof(*ph->env.cpu));
+ if (!ph->env.cpu)
+ return -1;
ret = readn(fd, &nr, sizeof(nr));
if (ret != sizeof(nr))
- return -1;
+ goto free_cpu;
if (ph->needs_swap)
nr = bswap_32(nr);
ph->env.nr_sibling_cores = nr;
+ size += sizeof(u32);
strbuf_init(&sb, 128);
for (i = 0; i < nr; i++) {
@@ -1608,6 +1646,7 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
/* include a NULL character at the end */
strbuf_add(&sb, str, strlen(str) + 1);
+ size += string_size(str);
free(str);
}
ph->env.sibling_cores = strbuf_detach(&sb, NULL);
@@ -1620,6 +1659,7 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
nr = bswap_32(nr);
ph->env.nr_sibling_threads = nr;
+ size += sizeof(u32);
for (i = 0; i < nr; i++) {
str = do_read_string(fd, ph);
@@ -1628,13 +1668,57 @@ static int process_cpu_topology(struct perf_file_section *section __maybe_unused
/* include a NULL character at the end */
strbuf_add(&sb, str, strlen(str) + 1);
+ size += string_size(str);
free(str);
}
ph->env.sibling_threads = strbuf_detach(&sb, NULL);
+
+ /*
+ * The header may be from old perf,
+ * which doesn't include core id and socket id information.
+ */
+ if (section->size <= size) {
+ zfree(&ph->env.cpu);
+ return 0;
+ }
+
+ for (i = 0; i < (u32)cpu_nr; i++) {
+ ret = readn(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ goto free_cpu;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ if (nr > (u32)cpu_nr) {
+ pr_debug("core_id number is too big."
+ "You may need to upgrade the perf tool.\n");
+ goto free_cpu;
+ }
+ ph->env.cpu[i].core_id = nr;
+
+ ret = readn(fd, &nr, sizeof(nr));
+ if (ret != sizeof(nr))
+ goto free_cpu;
+
+ if (ph->needs_swap)
+ nr = bswap_32(nr);
+
+ if (nr > (u32)cpu_nr) {
+ pr_debug("socket_id number is too big."
+ "You may need to upgrade the perf tool.\n");
+ goto free_cpu;
+ }
+
+ ph->env.cpu[i].socket_id = nr;
+ }
+
return 0;
error:
strbuf_release(&sb);
+free_cpu:
+ zfree(&ph->env.cpu);
return -1;
}
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 396e4965f0c9..975d803f46c8 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -66,6 +66,11 @@ struct perf_header;
int perf_file_header__read(struct perf_file_header *header,
struct perf_header *ph, int fd);
+struct cpu_topology_map {
+ int socket_id;
+ int core_id;
+};
+
struct perf_env {
char *hostname;
char *os_release;
@@ -89,6 +94,7 @@ struct perf_env {
char *sibling_threads;
char *numa_nodes;
char *pmu_mappings;
+ struct cpu_topology_map *cpu;
};
struct perf_header {
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 8a4537ee9bc3..61669be15056 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -185,6 +185,7 @@ static void perf_session_env__exit(struct perf_env *env)
zfree(&env->sibling_threads);
zfree(&env->numa_nodes);
zfree(&env->pmu_mappings);
+ zfree(&env->cpu);
}
void perf_session__delete(struct perf_session *session)
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-10 19:21:50 +0300