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-rw-r--r--tools/perf/util/env.c319
1 files changed, 282 insertions, 37 deletions
diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 5b8cf6a421a4..f1626d2032cd 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -3,31 +3,46 @@
#include "debug.h"
#include "env.h"
#include "util/header.h"
+#include "util/rwsem.h"
+#include <linux/compiler.h>
#include <linux/ctype.h>
+#include <linux/rbtree.h>
+#include <linux/string.h>
#include <linux/zalloc.h>
#include "cgroup.h"
#include <errno.h>
#include <sys/utsname.h>
#include <stdlib.h>
#include <string.h>
+#include "pmu.h"
+#include "pmus.h"
#include "strbuf.h"
-
-struct perf_env perf_env;
+#include "trace/beauty/beauty.h"
#ifdef HAVE_LIBBPF_SUPPORT
#include "bpf-event.h"
#include "bpf-utils.h"
#include <bpf/libbpf.h>
-void perf_env__insert_bpf_prog_info(struct perf_env *env,
+bool perf_env__insert_bpf_prog_info(struct perf_env *env,
struct bpf_prog_info_node *info_node)
{
+ bool ret;
+
+ down_write(&env->bpf_progs.lock);
+ ret = __perf_env__insert_bpf_prog_info(env, info_node);
+ up_write(&env->bpf_progs.lock);
+
+ return ret;
+}
+
+bool __perf_env__insert_bpf_prog_info(struct perf_env *env, struct bpf_prog_info_node *info_node)
+{
__u32 prog_id = info_node->info_linear->info.id;
struct bpf_prog_info_node *node;
struct rb_node *parent = NULL;
struct rb_node **p;
- down_write(&env->bpf_progs.lock);
p = &env->bpf_progs.infos.rb_node;
while (*p != NULL) {
@@ -39,15 +54,14 @@ void perf_env__insert_bpf_prog_info(struct perf_env *env,
p = &(*p)->rb_right;
} else {
pr_debug("duplicated bpf prog info %u\n", prog_id);
- goto out;
+ return false;
}
}
rb_link_node(&info_node->rb_node, parent, p);
rb_insert_color(&info_node->rb_node, &env->bpf_progs.infos);
env->bpf_progs.infos_cnt++;
-out:
- up_write(&env->bpf_progs.lock);
+ return true;
}
struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
@@ -75,15 +89,37 @@ out:
return node;
}
+void perf_env__iterate_bpf_prog_info(struct perf_env *env,
+ void (*cb)(struct bpf_prog_info_node *node,
+ void *data),
+ void *data)
+{
+ struct rb_node *first;
+
+ down_read(&env->bpf_progs.lock);
+ first = rb_first(&env->bpf_progs.infos);
+ for (struct rb_node *node = first; node != NULL; node = rb_next(node))
+ (*cb)(rb_entry(node, struct bpf_prog_info_node, rb_node), data);
+ up_read(&env->bpf_progs.lock);
+}
+
bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
{
+ bool ret;
+
+ down_write(&env->bpf_progs.lock);
+ ret = __perf_env__insert_btf(env, btf_node);
+ up_write(&env->bpf_progs.lock);
+ return ret;
+}
+
+bool __perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
+{
struct rb_node *parent = NULL;
__u32 btf_id = btf_node->id;
struct btf_node *node;
struct rb_node **p;
- bool ret = true;
- down_write(&env->bpf_progs.lock);
p = &env->bpf_progs.btfs.rb_node;
while (*p != NULL) {
@@ -95,25 +131,31 @@ bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
p = &(*p)->rb_right;
} else {
pr_debug("duplicated btf %u\n", btf_id);
- ret = false;
- goto out;
+ return false;
}
}
rb_link_node(&btf_node->rb_node, parent, p);
rb_insert_color(&btf_node->rb_node, &env->bpf_progs.btfs);
env->bpf_progs.btfs_cnt++;
-out:
- up_write(&env->bpf_progs.lock);
- return ret;
+ return true;
}
struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
{
+ struct btf_node *res;
+
+ down_read(&env->bpf_progs.lock);
+ res = __perf_env__find_btf(env, btf_id);
+ up_read(&env->bpf_progs.lock);
+ return res;
+}
+
+struct btf_node *__perf_env__find_btf(struct perf_env *env, __u32 btf_id)
+{
struct btf_node *node = NULL;
struct rb_node *n;
- down_read(&env->bpf_progs.lock);
n = env->bpf_progs.btfs.rb_node;
while (n) {
@@ -123,13 +165,9 @@ struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
else if (btf_id > node->id)
n = n->rb_right;
else
- goto out;
+ return node;
}
- node = NULL;
-
-out:
- up_read(&env->bpf_progs.lock);
- return node;
+ return NULL;
}
/* purge data in bpf_progs.infos tree */
@@ -149,7 +187,8 @@ static void perf_env__purge_bpf(struct perf_env *env)
node = rb_entry(next, struct bpf_prog_info_node, rb_node);
next = rb_next(&node->rb_node);
rb_erase(&node->rb_node, root);
- free(node->info_linear);
+ zfree(&node->info_linear);
+ bpf_metadata_free(node->metadata);
free(node);
}
@@ -230,6 +269,7 @@ void perf_env__exit(struct perf_env *env)
void perf_env__init(struct perf_env *env)
{
+ memset(env, 0, sizeof(*env));
#ifdef HAVE_LIBBPF_SUPPORT
env->bpf_progs.infos = RB_ROOT;
env->bpf_progs.btfs = RB_ROOT;
@@ -307,10 +347,13 @@ int perf_env__read_cpu_topology_map(struct perf_env *env)
for (idx = 0; idx < nr_cpus; ++idx) {
struct perf_cpu cpu = { .cpu = idx };
+ int core_id = cpu__get_core_id(cpu);
+ int socket_id = cpu__get_socket_id(cpu);
+ int die_id = cpu__get_die_id(cpu);
- env->cpu[idx].core_id = cpu__get_core_id(cpu);
- env->cpu[idx].socket_id = cpu__get_socket_id(cpu);
- env->cpu[idx].die_id = cpu__get_die_id(cpu);
+ env->cpu[idx].core_id = core_id >= 0 ? core_id : -1;
+ env->cpu[idx].socket_id = socket_id >= 0 ? socket_id : -1;
+ env->cpu[idx].die_id = die_id >= 0 ? die_id : -1;
}
env->nr_cpus_avail = nr_cpus;
@@ -323,11 +366,9 @@ int perf_env__read_pmu_mappings(struct perf_env *env)
u32 pmu_num = 0;
struct strbuf sb;
- while ((pmu = perf_pmu__scan(pmu))) {
- if (!pmu->name)
- continue;
+ while ((pmu = perf_pmus__scan(pmu)))
pmu_num++;
- }
+
if (!pmu_num) {
pr_debug("pmu mappings not available\n");
return -ENOENT;
@@ -337,9 +378,7 @@ int perf_env__read_pmu_mappings(struct perf_env *env)
if (strbuf_init(&sb, 128 * pmu_num) < 0)
return -ENOMEM;
- while ((pmu = perf_pmu__scan(pmu))) {
- if (!pmu->name)
- continue;
+ while ((pmu = perf_pmus__scan(pmu))) {
if (strbuf_addf(&sb, "%u:%s", pmu->type, pmu->name) < 0)
goto error;
/* include a NULL character at the end */
@@ -359,7 +398,8 @@ error:
int perf_env__read_cpuid(struct perf_env *env)
{
char cpuid[128];
- int err = get_cpuid(cpuid, sizeof(cpuid));
+ struct perf_cpu cpu = {-1};
+ int err = get_cpuid(cpuid, sizeof(cpuid), cpu);
if (err)
return err;
@@ -392,6 +432,116 @@ static int perf_env__read_nr_cpus_avail(struct perf_env *env)
return env->nr_cpus_avail ? 0 : -ENOENT;
}
+static int __perf_env__read_core_pmu_caps(const struct perf_pmu *pmu,
+ int *nr_caps, char ***caps,
+ unsigned int *max_branches,
+ unsigned int *br_cntr_nr,
+ unsigned int *br_cntr_width)
+{
+ struct perf_pmu_caps *pcaps = NULL;
+ char *ptr, **tmp;
+ int ret = 0;
+
+ *nr_caps = 0;
+ *caps = NULL;
+
+ if (!pmu->nr_caps)
+ return 0;
+
+ *caps = calloc(pmu->nr_caps, sizeof(char *));
+ if (!*caps)
+ return -ENOMEM;
+
+ tmp = *caps;
+ list_for_each_entry(pcaps, &pmu->caps, list) {
+ if (asprintf(&ptr, "%s=%s", pcaps->name, pcaps->value) < 0) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ *tmp++ = ptr;
+
+ if (!strcmp(pcaps->name, "branches"))
+ *max_branches = atoi(pcaps->value);
+ else if (!strcmp(pcaps->name, "branch_counter_nr"))
+ *br_cntr_nr = atoi(pcaps->value);
+ else if (!strcmp(pcaps->name, "branch_counter_width"))
+ *br_cntr_width = atoi(pcaps->value);
+ }
+ *nr_caps = pmu->nr_caps;
+ return 0;
+error:
+ while (tmp-- != *caps)
+ zfree(tmp);
+ zfree(caps);
+ *nr_caps = 0;
+ return ret;
+}
+
+int perf_env__read_core_pmu_caps(struct perf_env *env)
+{
+ struct pmu_caps *pmu_caps;
+ struct perf_pmu *pmu = NULL;
+ int nr_pmu, i = 0, j;
+ int ret;
+
+ nr_pmu = perf_pmus__num_core_pmus();
+
+ if (!nr_pmu)
+ return -ENODEV;
+
+ if (nr_pmu == 1) {
+ pmu = perf_pmus__find_core_pmu();
+ if (!pmu)
+ return -ENODEV;
+ ret = perf_pmu__caps_parse(pmu);
+ if (ret < 0)
+ return ret;
+ return __perf_env__read_core_pmu_caps(pmu, &env->nr_cpu_pmu_caps,
+ &env->cpu_pmu_caps,
+ &env->max_branches,
+ &env->br_cntr_nr,
+ &env->br_cntr_width);
+ }
+
+ pmu_caps = calloc(nr_pmu, sizeof(*pmu_caps));
+ if (!pmu_caps)
+ return -ENOMEM;
+
+ while ((pmu = perf_pmus__scan_core(pmu)) != NULL) {
+ if (perf_pmu__caps_parse(pmu) <= 0)
+ continue;
+ ret = __perf_env__read_core_pmu_caps(pmu, &pmu_caps[i].nr_caps,
+ &pmu_caps[i].caps,
+ &pmu_caps[i].max_branches,
+ &pmu_caps[i].br_cntr_nr,
+ &pmu_caps[i].br_cntr_width);
+ if (ret)
+ goto error;
+
+ pmu_caps[i].pmu_name = strdup(pmu->name);
+ if (!pmu_caps[i].pmu_name) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ i++;
+ }
+
+ env->nr_pmus_with_caps = nr_pmu;
+ env->pmu_caps = pmu_caps;
+
+ return 0;
+error:
+ for (i = 0; i < nr_pmu; i++) {
+ for (j = 0; j < pmu_caps[i].nr_caps; j++)
+ zfree(&pmu_caps[i].caps[j]);
+ zfree(&pmu_caps[i].caps);
+ zfree(&pmu_caps[i].pmu_name);
+ }
+ zfree(&pmu_caps);
+ return ret;
+}
+
const char *perf_env__raw_arch(struct perf_env *env)
{
return env && !perf_env__read_arch(env) ? env->arch : "unknown";
@@ -435,6 +585,8 @@ static const char *normalize_arch(char *arch)
return "mips";
if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
return "sh";
+ if (!strncmp(arch, "loongarch", 9))
+ return "loongarch";
return arch;
}
@@ -454,11 +606,27 @@ const char *perf_env__arch(struct perf_env *env)
return normalize_arch(arch_name);
}
+#if defined(HAVE_LIBTRACEEVENT)
+#include "trace/beauty/arch_errno_names.c"
+#endif
+
+const char *perf_env__arch_strerrno(struct perf_env *env __maybe_unused, int err __maybe_unused)
+{
+#if defined(HAVE_LIBTRACEEVENT)
+ if (env->arch_strerrno == NULL)
+ env->arch_strerrno = arch_syscalls__strerrno_function(perf_env__arch(env));
+
+ return env->arch_strerrno ? env->arch_strerrno(err) : "no arch specific strerrno function";
+#else
+ return "!HAVE_LIBTRACEEVENT";
+#endif
+}
+
const char *perf_env__cpuid(struct perf_env *env)
{
int status;
- if (!env || !env->cpuid) { /* Assume local operation */
+ if (!env->cpuid) { /* Assume local operation */
status = perf_env__read_cpuid(env);
if (status)
return NULL;
@@ -471,7 +639,7 @@ int perf_env__nr_pmu_mappings(struct perf_env *env)
{
int status;
- if (!env || !env->nr_pmu_mappings) { /* Assume local operation */
+ if (!env->nr_pmu_mappings) { /* Assume local operation */
status = perf_env__read_pmu_mappings(env);
if (status)
return 0;
@@ -484,7 +652,7 @@ const char *perf_env__pmu_mappings(struct perf_env *env)
{
int status;
- if (!env || !env->pmu_mappings) { /* Assume local operation */
+ if (!env->pmu_mappings) { /* Assume local operation */
status = perf_env__read_pmu_mappings(env);
if (status)
return NULL;
@@ -501,7 +669,7 @@ int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu)
for (i = 0; i < env->nr_numa_nodes; i++) {
nn = &env->numa_nodes[i];
- nr = max(nr, perf_cpu_map__max(nn->map).cpu);
+ nr = max(nr, (int)perf_cpu_map__max(nn->map).cpu);
}
nr++;
@@ -532,6 +700,24 @@ int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu)
return cpu.cpu >= 0 && cpu.cpu < env->nr_numa_map ? env->numa_map[cpu.cpu] : -1;
}
+bool perf_env__has_pmu_mapping(struct perf_env *env, const char *pmu_name)
+{
+ char *pmu_mapping = env->pmu_mappings, *colon;
+
+ for (int i = 0; i < env->nr_pmu_mappings; ++i) {
+ if (strtoul(pmu_mapping, &colon, 0) == ULONG_MAX || *colon != ':')
+ goto out_error;
+
+ pmu_mapping = colon + 1;
+ if (strcmp(pmu_mapping, pmu_name) == 0)
+ return true;
+
+ pmu_mapping += strlen(pmu_mapping) + 1;
+ }
+out_error:
+ return false;
+}
+
char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
const char *cap)
{
@@ -579,3 +765,62 @@ out:
free(cap_eq);
return NULL;
}
+
+void perf_env__find_br_cntr_info(struct perf_env *env,
+ unsigned int *nr,
+ unsigned int *width)
+{
+ if (nr) {
+ *nr = env->cpu_pmu_caps ? env->br_cntr_nr :
+ env->pmu_caps->br_cntr_nr;
+ }
+
+ if (width) {
+ *width = env->cpu_pmu_caps ? env->br_cntr_width :
+ env->pmu_caps->br_cntr_width;
+ }
+}
+
+bool perf_env__is_x86_amd_cpu(struct perf_env *env)
+{
+ static int is_amd; /* 0: Uninitialized, 1: Yes, -1: No */
+
+ if (is_amd == 0)
+ is_amd = env->cpuid && strstarts(env->cpuid, "AuthenticAMD") ? 1 : -1;
+
+ return is_amd >= 1 ? true : false;
+}
+
+bool x86__is_amd_cpu(void)
+{
+ struct perf_env env = { .total_mem = 0, };
+ bool is_amd;
+
+ perf_env__cpuid(&env);
+ is_amd = perf_env__is_x86_amd_cpu(&env);
+ perf_env__exit(&env);
+
+ return is_amd;
+}
+
+bool perf_env__is_x86_intel_cpu(struct perf_env *env)
+{
+ static int is_intel; /* 0: Uninitialized, 1: Yes, -1: No */
+
+ if (is_intel == 0)
+ is_intel = env->cpuid && strstarts(env->cpuid, "GenuineIntel") ? 1 : -1;
+
+ return is_intel >= 1 ? true : false;
+}
+
+bool x86__is_intel_cpu(void)
+{
+ struct perf_env env = { .total_mem = 0, };
+ bool is_intel;
+
+ perf_env__cpuid(&env);
+ is_intel = perf_env__is_x86_intel_cpu(&env);
+ perf_env__exit(&env);
+
+ return is_intel;
+}
generated by cgit (git 2.34.1) at 2025-12-21 18:55:58 +0000