582 lines
12 KiB
C
582 lines
12 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#include "cpumap.h"
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#include "debug.h"
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#include "env.h"
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#include "util/header.h"
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#include <linux/ctype.h>
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#include <linux/zalloc.h>
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#include "cgroup.h"
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#include <errno.h>
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#include <sys/utsname.h>
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#include <stdlib.h>
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#include <string.h>
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#include "strbuf.h"
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struct perf_env perf_env;
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#ifdef HAVE_LIBBPF_SUPPORT
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#include "bpf-event.h"
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#include "bpf-utils.h"
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#include <bpf/libbpf.h>
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void perf_env__insert_bpf_prog_info(struct perf_env *env,
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struct bpf_prog_info_node *info_node)
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{
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__u32 prog_id = info_node->info_linear->info.id;
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struct bpf_prog_info_node *node;
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struct rb_node *parent = NULL;
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struct rb_node **p;
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down_write(&env->bpf_progs.lock);
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p = &env->bpf_progs.infos.rb_node;
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while (*p != NULL) {
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parent = *p;
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node = rb_entry(parent, struct bpf_prog_info_node, rb_node);
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if (prog_id < node->info_linear->info.id) {
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p = &(*p)->rb_left;
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} else if (prog_id > node->info_linear->info.id) {
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p = &(*p)->rb_right;
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} else {
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pr_debug("duplicated bpf prog info %u\n", prog_id);
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goto out;
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}
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}
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rb_link_node(&info_node->rb_node, parent, p);
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rb_insert_color(&info_node->rb_node, &env->bpf_progs.infos);
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env->bpf_progs.infos_cnt++;
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out:
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up_write(&env->bpf_progs.lock);
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}
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struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
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__u32 prog_id)
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{
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struct bpf_prog_info_node *node = NULL;
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struct rb_node *n;
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down_read(&env->bpf_progs.lock);
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n = env->bpf_progs.infos.rb_node;
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while (n) {
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node = rb_entry(n, struct bpf_prog_info_node, rb_node);
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if (prog_id < node->info_linear->info.id)
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n = n->rb_left;
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else if (prog_id > node->info_linear->info.id)
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n = n->rb_right;
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else
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goto out;
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}
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node = NULL;
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out:
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up_read(&env->bpf_progs.lock);
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return node;
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}
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bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
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{
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struct rb_node *parent = NULL;
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__u32 btf_id = btf_node->id;
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struct btf_node *node;
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struct rb_node **p;
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bool ret = true;
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down_write(&env->bpf_progs.lock);
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p = &env->bpf_progs.btfs.rb_node;
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while (*p != NULL) {
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parent = *p;
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node = rb_entry(parent, struct btf_node, rb_node);
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if (btf_id < node->id) {
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p = &(*p)->rb_left;
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} else if (btf_id > node->id) {
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p = &(*p)->rb_right;
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} else {
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pr_debug("duplicated btf %u\n", btf_id);
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ret = false;
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goto out;
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}
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}
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rb_link_node(&btf_node->rb_node, parent, p);
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rb_insert_color(&btf_node->rb_node, &env->bpf_progs.btfs);
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env->bpf_progs.btfs_cnt++;
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out:
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up_write(&env->bpf_progs.lock);
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return ret;
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}
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struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
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{
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struct btf_node *node = NULL;
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struct rb_node *n;
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down_read(&env->bpf_progs.lock);
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n = env->bpf_progs.btfs.rb_node;
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while (n) {
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node = rb_entry(n, struct btf_node, rb_node);
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if (btf_id < node->id)
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n = n->rb_left;
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else if (btf_id > node->id)
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n = n->rb_right;
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else
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goto out;
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}
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node = NULL;
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out:
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up_read(&env->bpf_progs.lock);
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return node;
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}
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/* purge data in bpf_progs.infos tree */
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static void perf_env__purge_bpf(struct perf_env *env)
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{
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struct rb_root *root;
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struct rb_node *next;
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down_write(&env->bpf_progs.lock);
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root = &env->bpf_progs.infos;
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next = rb_first(root);
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while (next) {
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struct bpf_prog_info_node *node;
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node = rb_entry(next, struct bpf_prog_info_node, rb_node);
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next = rb_next(&node->rb_node);
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rb_erase(&node->rb_node, root);
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free(node->info_linear);
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free(node);
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}
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env->bpf_progs.infos_cnt = 0;
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root = &env->bpf_progs.btfs;
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next = rb_first(root);
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while (next) {
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struct btf_node *node;
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node = rb_entry(next, struct btf_node, rb_node);
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next = rb_next(&node->rb_node);
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rb_erase(&node->rb_node, root);
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free(node);
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}
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env->bpf_progs.btfs_cnt = 0;
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up_write(&env->bpf_progs.lock);
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}
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#else // HAVE_LIBBPF_SUPPORT
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static void perf_env__purge_bpf(struct perf_env *env __maybe_unused)
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{
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}
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#endif // HAVE_LIBBPF_SUPPORT
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void perf_env__exit(struct perf_env *env)
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{
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int i, j;
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perf_env__purge_bpf(env);
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perf_env__purge_cgroups(env);
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zfree(&env->hostname);
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zfree(&env->os_release);
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zfree(&env->version);
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zfree(&env->arch);
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zfree(&env->cpu_desc);
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zfree(&env->cpuid);
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zfree(&env->cmdline);
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zfree(&env->cmdline_argv);
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zfree(&env->sibling_dies);
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zfree(&env->sibling_cores);
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zfree(&env->sibling_threads);
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zfree(&env->pmu_mappings);
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zfree(&env->cpu);
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for (i = 0; i < env->nr_cpu_pmu_caps; i++)
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zfree(&env->cpu_pmu_caps[i]);
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zfree(&env->cpu_pmu_caps);
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zfree(&env->numa_map);
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for (i = 0; i < env->nr_numa_nodes; i++)
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perf_cpu_map__put(env->numa_nodes[i].map);
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zfree(&env->numa_nodes);
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for (i = 0; i < env->caches_cnt; i++)
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cpu_cache_level__free(&env->caches[i]);
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zfree(&env->caches);
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for (i = 0; i < env->nr_memory_nodes; i++)
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zfree(&env->memory_nodes[i].set);
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zfree(&env->memory_nodes);
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for (i = 0; i < env->nr_hybrid_nodes; i++) {
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zfree(&env->hybrid_nodes[i].pmu_name);
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zfree(&env->hybrid_nodes[i].cpus);
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}
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zfree(&env->hybrid_nodes);
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for (i = 0; i < env->nr_pmus_with_caps; i++) {
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for (j = 0; j < env->pmu_caps[i].nr_caps; j++)
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zfree(&env->pmu_caps[i].caps[j]);
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zfree(&env->pmu_caps[i].caps);
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zfree(&env->pmu_caps[i].pmu_name);
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}
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zfree(&env->pmu_caps);
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}
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void perf_env__init(struct perf_env *env)
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{
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#ifdef HAVE_LIBBPF_SUPPORT
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env->bpf_progs.infos = RB_ROOT;
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env->bpf_progs.btfs = RB_ROOT;
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init_rwsem(&env->bpf_progs.lock);
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#endif
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env->kernel_is_64_bit = -1;
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}
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static void perf_env__init_kernel_mode(struct perf_env *env)
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{
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const char *arch = perf_env__raw_arch(env);
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if (!strncmp(arch, "x86_64", 6) || !strncmp(arch, "aarch64", 7) ||
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!strncmp(arch, "arm64", 5) || !strncmp(arch, "mips64", 6) ||
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!strncmp(arch, "parisc64", 8) || !strncmp(arch, "riscv64", 7) ||
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!strncmp(arch, "s390x", 5) || !strncmp(arch, "sparc64", 7))
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env->kernel_is_64_bit = 1;
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else
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env->kernel_is_64_bit = 0;
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}
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int perf_env__kernel_is_64_bit(struct perf_env *env)
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{
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if (env->kernel_is_64_bit == -1)
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perf_env__init_kernel_mode(env);
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return env->kernel_is_64_bit;
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}
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int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
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{
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int i;
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/* do not include NULL termination */
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env->cmdline_argv = calloc(argc, sizeof(char *));
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if (env->cmdline_argv == NULL)
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goto out_enomem;
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/*
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* Must copy argv contents because it gets moved around during option
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* parsing:
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*/
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for (i = 0; i < argc ; i++) {
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env->cmdline_argv[i] = argv[i];
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if (env->cmdline_argv[i] == NULL)
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goto out_free;
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}
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env->nr_cmdline = argc;
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return 0;
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out_free:
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zfree(&env->cmdline_argv);
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out_enomem:
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return -ENOMEM;
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}
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int perf_env__read_cpu_topology_map(struct perf_env *env)
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{
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int idx, nr_cpus;
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if (env->cpu != NULL)
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return 0;
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if (env->nr_cpus_avail == 0)
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env->nr_cpus_avail = cpu__max_present_cpu().cpu;
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|
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||
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nr_cpus = env->nr_cpus_avail;
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if (nr_cpus == -1)
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return -EINVAL;
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|
|
|
||
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env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
|
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|
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if (env->cpu == NULL)
|
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return -ENOMEM;
|
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|
|
|
||
|
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for (idx = 0; idx < nr_cpus; ++idx) {
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struct perf_cpu cpu = { .cpu = idx };
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||
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env->cpu[idx].core_id = cpu__get_core_id(cpu);
|
||
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env->cpu[idx].socket_id = cpu__get_socket_id(cpu);
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||
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env->cpu[idx].die_id = cpu__get_die_id(cpu);
|
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}
|
||
|
|
|
||
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env->nr_cpus_avail = nr_cpus;
|
||
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return 0;
|
||
|
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}
|
||
|
|
|
||
|
|
int perf_env__read_pmu_mappings(struct perf_env *env)
|
||
|
|
{
|
||
|
|
struct perf_pmu *pmu = NULL;
|
||
|
|
u32 pmu_num = 0;
|
||
|
|
struct strbuf sb;
|
||
|
|
|
||
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while ((pmu = perf_pmu__scan(pmu))) {
|
||
|
|
if (!pmu->name)
|
||
|
|
continue;
|
||
|
|
pmu_num++;
|
||
|
|
}
|
||
|
|
if (!pmu_num) {
|
||
|
|
pr_debug("pmu mappings not available\n");
|
||
|
|
return -ENOENT;
|
||
|
|
}
|
||
|
|
env->nr_pmu_mappings = pmu_num;
|
||
|
|
|
||
|
|
if (strbuf_init(&sb, 128 * pmu_num) < 0)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
while ((pmu = perf_pmu__scan(pmu))) {
|
||
|
|
if (!pmu->name)
|
||
|
|
continue;
|
||
|
|
if (strbuf_addf(&sb, "%u:%s", pmu->type, pmu->name) < 0)
|
||
|
|
goto error;
|
||
|
|
/* include a NULL character at the end */
|
||
|
|
if (strbuf_add(&sb, "", 1) < 0)
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
env->pmu_mappings = strbuf_detach(&sb, NULL);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error:
|
||
|
|
strbuf_release(&sb);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_env__read_cpuid(struct perf_env *env)
|
||
|
|
{
|
||
|
|
char cpuid[128];
|
||
|
|
int err = get_cpuid(cpuid, sizeof(cpuid));
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
free(env->cpuid);
|
||
|
|
env->cpuid = strdup(cpuid);
|
||
|
|
if (env->cpuid == NULL)
|
||
|
|
return ENOMEM;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_env__read_arch(struct perf_env *env)
|
||
|
|
{
|
||
|
|
struct utsname uts;
|
||
|
|
|
||
|
|
if (env->arch)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
if (!uname(&uts))
|
||
|
|
env->arch = strdup(uts.machine);
|
||
|
|
|
||
|
|
return env->arch ? 0 : -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int perf_env__read_nr_cpus_avail(struct perf_env *env)
|
||
|
|
{
|
||
|
|
if (env->nr_cpus_avail == 0)
|
||
|
|
env->nr_cpus_avail = cpu__max_present_cpu().cpu;
|
||
|
|
|
||
|
|
return env->nr_cpus_avail ? 0 : -ENOENT;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *perf_env__raw_arch(struct perf_env *env)
|
||
|
|
{
|
||
|
|
return env && !perf_env__read_arch(env) ? env->arch : "unknown";
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_env__nr_cpus_avail(struct perf_env *env)
|
||
|
|
{
|
||
|
|
return env && !perf_env__read_nr_cpus_avail(env) ? env->nr_cpus_avail : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void cpu_cache_level__free(struct cpu_cache_level *cache)
|
||
|
|
{
|
||
|
|
zfree(&cache->type);
|
||
|
|
zfree(&cache->map);
|
||
|
|
zfree(&cache->size);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Return architecture name in a normalized form.
|
||
|
|
* The conversion logic comes from the Makefile.
|
||
|
|
*/
|
||
|
|
static const char *normalize_arch(char *arch)
|
||
|
|
{
|
||
|
|
if (!strcmp(arch, "x86_64"))
|
||
|
|
return "x86";
|
||
|
|
if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
|
||
|
|
return "x86";
|
||
|
|
if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
|
||
|
|
return "sparc";
|
||
|
|
if (!strncmp(arch, "aarch64", 7) || !strncmp(arch, "arm64", 5))
|
||
|
|
return "arm64";
|
||
|
|
if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
|
||
|
|
return "arm";
|
||
|
|
if (!strncmp(arch, "s390", 4))
|
||
|
|
return "s390";
|
||
|
|
if (!strncmp(arch, "parisc", 6))
|
||
|
|
return "parisc";
|
||
|
|
if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
|
||
|
|
return "powerpc";
|
||
|
|
if (!strncmp(arch, "mips", 4))
|
||
|
|
return "mips";
|
||
|
|
if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
|
||
|
|
return "sh";
|
||
|
|
|
||
|
|
return arch;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *perf_env__arch(struct perf_env *env)
|
||
|
|
{
|
||
|
|
char *arch_name;
|
||
|
|
|
||
|
|
if (!env || !env->arch) { /* Assume local operation */
|
||
|
|
static struct utsname uts = { .machine[0] = '\0', };
|
||
|
|
if (uts.machine[0] == '\0' && uname(&uts) < 0)
|
||
|
|
return NULL;
|
||
|
|
arch_name = uts.machine;
|
||
|
|
} else
|
||
|
|
arch_name = env->arch;
|
||
|
|
|
||
|
|
return normalize_arch(arch_name);
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *perf_env__cpuid(struct perf_env *env)
|
||
|
|
{
|
||
|
|
int status;
|
||
|
|
|
||
|
|
if (!env || !env->cpuid) { /* Assume local operation */
|
||
|
|
status = perf_env__read_cpuid(env);
|
||
|
|
if (status)
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return env->cpuid;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_env__nr_pmu_mappings(struct perf_env *env)
|
||
|
|
{
|
||
|
|
int status;
|
||
|
|
|
||
|
|
if (!env || !env->nr_pmu_mappings) { /* Assume local operation */
|
||
|
|
status = perf_env__read_pmu_mappings(env);
|
||
|
|
if (status)
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return env->nr_pmu_mappings;
|
||
|
|
}
|
||
|
|
|
||
|
|
const char *perf_env__pmu_mappings(struct perf_env *env)
|
||
|
|
{
|
||
|
|
int status;
|
||
|
|
|
||
|
|
if (!env || !env->pmu_mappings) { /* Assume local operation */
|
||
|
|
status = perf_env__read_pmu_mappings(env);
|
||
|
|
if (status)
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return env->pmu_mappings;
|
||
|
|
}
|
||
|
|
|
||
|
|
int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu)
|
||
|
|
{
|
||
|
|
if (!env->nr_numa_map) {
|
||
|
|
struct numa_node *nn;
|
||
|
|
int i, nr = 0;
|
||
|
|
|
||
|
|
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++;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We initialize the numa_map array to prepare
|
||
|
|
* it for missing cpus, which return node -1
|
||
|
|
*/
|
||
|
|
env->numa_map = malloc(nr * sizeof(int));
|
||
|
|
if (!env->numa_map)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
for (i = 0; i < nr; i++)
|
||
|
|
env->numa_map[i] = -1;
|
||
|
|
|
||
|
|
env->nr_numa_map = nr;
|
||
|
|
|
||
|
|
for (i = 0; i < env->nr_numa_nodes; i++) {
|
||
|
|
struct perf_cpu tmp;
|
||
|
|
int j;
|
||
|
|
|
||
|
|
nn = &env->numa_nodes[i];
|
||
|
|
perf_cpu_map__for_each_cpu(tmp, j, nn->map)
|
||
|
|
env->numa_map[tmp.cpu] = i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return cpu.cpu >= 0 && cpu.cpu < env->nr_numa_map ? env->numa_map[cpu.cpu] : -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
|
||
|
|
const char *cap)
|
||
|
|
{
|
||
|
|
char *cap_eq;
|
||
|
|
int cap_size;
|
||
|
|
char **ptr;
|
||
|
|
int i, j;
|
||
|
|
|
||
|
|
if (!pmu_name || !cap)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
cap_size = strlen(cap);
|
||
|
|
cap_eq = zalloc(cap_size + 2);
|
||
|
|
if (!cap_eq)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
memcpy(cap_eq, cap, cap_size);
|
||
|
|
cap_eq[cap_size] = '=';
|
||
|
|
|
||
|
|
if (!strcmp(pmu_name, "cpu")) {
|
||
|
|
for (i = 0; i < env->nr_cpu_pmu_caps; i++) {
|
||
|
|
if (!strncmp(env->cpu_pmu_caps[i], cap_eq, cap_size + 1)) {
|
||
|
|
free(cap_eq);
|
||
|
|
return &env->cpu_pmu_caps[i][cap_size + 1];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (i = 0; i < env->nr_pmus_with_caps; i++) {
|
||
|
|
if (strcmp(env->pmu_caps[i].pmu_name, pmu_name))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
ptr = env->pmu_caps[i].caps;
|
||
|
|
|
||
|
|
for (j = 0; j < env->pmu_caps[i].nr_caps; j++) {
|
||
|
|
if (!strncmp(ptr[j], cap_eq, cap_size + 1)) {
|
||
|
|
free(cap_eq);
|
||
|
|
return &ptr[j][cap_size + 1];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
free(cap_eq);
|
||
|
|
return NULL;
|
||
|
|
}
|