1 // SPDX-License-Identifier: GPL-2.0
4 #include "sane_ctype.h"
8 #include <sys/utsname.h>
9 #include <bpf/libbpf.h>
11 struct perf_env perf_env;
13 void perf_env__insert_bpf_prog_info(struct perf_env *env,
14 struct bpf_prog_info_node *info_node)
16 __u32 prog_id = info_node->info_linear->info.id;
17 struct bpf_prog_info_node *node;
18 struct rb_node *parent = NULL;
21 down_write(&env->bpf_progs.lock);
22 p = &env->bpf_progs.infos.rb_node;
26 node = rb_entry(parent, struct bpf_prog_info_node, rb_node);
27 if (prog_id < node->info_linear->info.id) {
29 } else if (prog_id > node->info_linear->info.id) {
32 pr_debug("duplicated bpf prog info %u\n", prog_id);
37 rb_link_node(&info_node->rb_node, parent, p);
38 rb_insert_color(&info_node->rb_node, &env->bpf_progs.infos);
39 env->bpf_progs.infos_cnt++;
41 up_write(&env->bpf_progs.lock);
44 struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
47 struct bpf_prog_info_node *node = NULL;
50 down_read(&env->bpf_progs.lock);
51 n = env->bpf_progs.infos.rb_node;
54 node = rb_entry(n, struct bpf_prog_info_node, rb_node);
55 if (prog_id < node->info_linear->info.id)
57 else if (prog_id > node->info_linear->info.id)
63 up_read(&env->bpf_progs.lock);
67 void perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
69 struct rb_node *parent = NULL;
70 __u32 btf_id = btf_node->id;
71 struct btf_node *node;
74 down_write(&env->bpf_progs.lock);
75 p = &env->bpf_progs.btfs.rb_node;
79 node = rb_entry(parent, struct btf_node, rb_node);
80 if (btf_id < node->id) {
82 } else if (btf_id > node->id) {
85 pr_debug("duplicated btf %u\n", btf_id);
90 rb_link_node(&btf_node->rb_node, parent, p);
91 rb_insert_color(&btf_node->rb_node, &env->bpf_progs.btfs);
92 env->bpf_progs.btfs_cnt++;
94 up_write(&env->bpf_progs.lock);
97 struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
99 struct btf_node *node = NULL;
102 down_read(&env->bpf_progs.lock);
103 n = env->bpf_progs.btfs.rb_node;
106 node = rb_entry(n, struct btf_node, rb_node);
107 if (btf_id < node->id)
109 else if (btf_id > node->id)
115 up_read(&env->bpf_progs.lock);
119 /* purge data in bpf_progs.infos tree */
120 static void perf_env__purge_bpf(struct perf_env *env)
122 struct rb_root *root;
123 struct rb_node *next;
125 down_write(&env->bpf_progs.lock);
127 root = &env->bpf_progs.infos;
128 next = rb_first(root);
131 struct bpf_prog_info_node *node;
133 node = rb_entry(next, struct bpf_prog_info_node, rb_node);
134 next = rb_next(&node->rb_node);
135 rb_erase(&node->rb_node, root);
139 env->bpf_progs.infos_cnt = 0;
141 root = &env->bpf_progs.btfs;
142 next = rb_first(root);
145 struct btf_node *node;
147 node = rb_entry(next, struct btf_node, rb_node);
148 next = rb_next(&node->rb_node);
149 rb_erase(&node->rb_node, root);
153 env->bpf_progs.btfs_cnt = 0;
155 up_write(&env->bpf_progs.lock);
158 void perf_env__exit(struct perf_env *env)
162 perf_env__purge_bpf(env);
163 zfree(&env->hostname);
164 zfree(&env->os_release);
165 zfree(&env->version);
167 zfree(&env->cpu_desc);
169 zfree(&env->cmdline);
170 zfree(&env->cmdline_argv);
171 zfree(&env->sibling_cores);
172 zfree(&env->sibling_threads);
173 zfree(&env->pmu_mappings);
176 for (i = 0; i < env->nr_numa_nodes; i++)
177 cpu_map__put(env->numa_nodes[i].map);
178 zfree(&env->numa_nodes);
180 for (i = 0; i < env->caches_cnt; i++)
181 cpu_cache_level__free(&env->caches[i]);
184 for (i = 0; i < env->nr_memory_nodes; i++)
185 free(env->memory_nodes[i].set);
186 zfree(&env->memory_nodes);
189 void perf_env__init(struct perf_env *env)
191 env->bpf_progs.infos = RB_ROOT;
192 env->bpf_progs.btfs = RB_ROOT;
193 init_rwsem(&env->bpf_progs.lock);
196 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
200 /* do not include NULL termination */
201 env->cmdline_argv = calloc(argc, sizeof(char *));
202 if (env->cmdline_argv == NULL)
206 * Must copy argv contents because it gets moved around during option
209 for (i = 0; i < argc ; i++) {
210 env->cmdline_argv[i] = argv[i];
211 if (env->cmdline_argv[i] == NULL)
215 env->nr_cmdline = argc;
219 zfree(&env->cmdline_argv);
224 int perf_env__read_cpu_topology_map(struct perf_env *env)
228 if (env->cpu != NULL)
231 if (env->nr_cpus_avail == 0)
232 env->nr_cpus_avail = cpu__max_present_cpu();
234 nr_cpus = env->nr_cpus_avail;
238 env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
239 if (env->cpu == NULL)
242 for (cpu = 0; cpu < nr_cpus; ++cpu) {
243 env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
244 env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
247 env->nr_cpus_avail = nr_cpus;
251 static int perf_env__read_arch(struct perf_env *env)
259 env->arch = strdup(uts.machine);
261 return env->arch ? 0 : -ENOMEM;
264 static int perf_env__read_nr_cpus_avail(struct perf_env *env)
266 if (env->nr_cpus_avail == 0)
267 env->nr_cpus_avail = cpu__max_present_cpu();
269 return env->nr_cpus_avail ? 0 : -ENOENT;
272 const char *perf_env__raw_arch(struct perf_env *env)
274 return env && !perf_env__read_arch(env) ? env->arch : "unknown";
277 int perf_env__nr_cpus_avail(struct perf_env *env)
279 return env && !perf_env__read_nr_cpus_avail(env) ? env->nr_cpus_avail : 0;
282 void cpu_cache_level__free(struct cpu_cache_level *cache)
290 * Return architecture name in a normalized form.
291 * The conversion logic comes from the Makefile.
293 static const char *normalize_arch(char *arch)
295 if (!strcmp(arch, "x86_64"))
297 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
299 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
301 if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
303 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
305 if (!strncmp(arch, "s390", 4))
307 if (!strncmp(arch, "parisc", 6))
309 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
311 if (!strncmp(arch, "mips", 4))
313 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
319 const char *perf_env__arch(struct perf_env *env)
324 if (!env || !env->arch) { /* Assume local operation */
327 arch_name = uts.machine;
329 arch_name = env->arch;
331 return normalize_arch(arch_name);