1 // SPDX-License-Identifier: GPL-2.0
5 #include "util/header.h"
6 #include <linux/ctype.h>
7 #include <linux/zalloc.h>
10 #include <sys/utsname.h>
11 #include <bpf/libbpf.h>
15 struct perf_env perf_env;
17 void perf_env__insert_bpf_prog_info(struct perf_env *env,
18 struct bpf_prog_info_node *info_node)
20 __u32 prog_id = info_node->info_linear->info.id;
21 struct bpf_prog_info_node *node;
22 struct rb_node *parent = NULL;
25 down_write(&env->bpf_progs.lock);
26 p = &env->bpf_progs.infos.rb_node;
30 node = rb_entry(parent, struct bpf_prog_info_node, rb_node);
31 if (prog_id < node->info_linear->info.id) {
33 } else if (prog_id > node->info_linear->info.id) {
36 pr_debug("duplicated bpf prog info %u\n", prog_id);
41 rb_link_node(&info_node->rb_node, parent, p);
42 rb_insert_color(&info_node->rb_node, &env->bpf_progs.infos);
43 env->bpf_progs.infos_cnt++;
45 up_write(&env->bpf_progs.lock);
48 struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
51 struct bpf_prog_info_node *node = NULL;
54 down_read(&env->bpf_progs.lock);
55 n = env->bpf_progs.infos.rb_node;
58 node = rb_entry(n, struct bpf_prog_info_node, rb_node);
59 if (prog_id < node->info_linear->info.id)
61 else if (prog_id > node->info_linear->info.id)
69 up_read(&env->bpf_progs.lock);
73 void perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node)
75 struct rb_node *parent = NULL;
76 __u32 btf_id = btf_node->id;
77 struct btf_node *node;
80 down_write(&env->bpf_progs.lock);
81 p = &env->bpf_progs.btfs.rb_node;
85 node = rb_entry(parent, struct btf_node, rb_node);
86 if (btf_id < node->id) {
88 } else if (btf_id > node->id) {
91 pr_debug("duplicated btf %u\n", btf_id);
96 rb_link_node(&btf_node->rb_node, parent, p);
97 rb_insert_color(&btf_node->rb_node, &env->bpf_progs.btfs);
98 env->bpf_progs.btfs_cnt++;
100 up_write(&env->bpf_progs.lock);
103 struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id)
105 struct btf_node *node = NULL;
108 down_read(&env->bpf_progs.lock);
109 n = env->bpf_progs.btfs.rb_node;
112 node = rb_entry(n, struct btf_node, rb_node);
113 if (btf_id < node->id)
115 else if (btf_id > node->id)
123 up_read(&env->bpf_progs.lock);
127 /* purge data in bpf_progs.infos tree */
128 static void perf_env__purge_bpf(struct perf_env *env)
130 struct rb_root *root;
131 struct rb_node *next;
133 down_write(&env->bpf_progs.lock);
135 root = &env->bpf_progs.infos;
136 next = rb_first(root);
139 struct bpf_prog_info_node *node;
141 node = rb_entry(next, struct bpf_prog_info_node, rb_node);
142 next = rb_next(&node->rb_node);
143 rb_erase(&node->rb_node, root);
147 env->bpf_progs.infos_cnt = 0;
149 root = &env->bpf_progs.btfs;
150 next = rb_first(root);
153 struct btf_node *node;
155 node = rb_entry(next, struct btf_node, rb_node);
156 next = rb_next(&node->rb_node);
157 rb_erase(&node->rb_node, root);
161 env->bpf_progs.btfs_cnt = 0;
163 up_write(&env->bpf_progs.lock);
166 void perf_env__exit(struct perf_env *env)
170 perf_env__purge_bpf(env);
171 zfree(&env->hostname);
172 zfree(&env->os_release);
173 zfree(&env->version);
175 zfree(&env->cpu_desc);
177 zfree(&env->cmdline);
178 zfree(&env->cmdline_argv);
179 zfree(&env->sibling_cores);
180 zfree(&env->sibling_threads);
181 zfree(&env->pmu_mappings);
184 for (i = 0; i < env->nr_numa_nodes; i++)
185 perf_cpu_map__put(env->numa_nodes[i].map);
186 zfree(&env->numa_nodes);
188 for (i = 0; i < env->caches_cnt; i++)
189 cpu_cache_level__free(&env->caches[i]);
192 for (i = 0; i < env->nr_memory_nodes; i++)
193 zfree(&env->memory_nodes[i].set);
194 zfree(&env->memory_nodes);
197 void perf_env__init(struct perf_env *env)
199 env->bpf_progs.infos = RB_ROOT;
200 env->bpf_progs.btfs = RB_ROOT;
201 init_rwsem(&env->bpf_progs.lock);
204 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
208 /* do not include NULL termination */
209 env->cmdline_argv = calloc(argc, sizeof(char *));
210 if (env->cmdline_argv == NULL)
214 * Must copy argv contents because it gets moved around during option
217 for (i = 0; i < argc ; i++) {
218 env->cmdline_argv[i] = argv[i];
219 if (env->cmdline_argv[i] == NULL)
223 env->nr_cmdline = argc;
227 zfree(&env->cmdline_argv);
232 int perf_env__read_cpu_topology_map(struct perf_env *env)
236 if (env->cpu != NULL)
239 if (env->nr_cpus_avail == 0)
240 env->nr_cpus_avail = cpu__max_present_cpu();
242 nr_cpus = env->nr_cpus_avail;
246 env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
247 if (env->cpu == NULL)
250 for (cpu = 0; cpu < nr_cpus; ++cpu) {
251 env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
252 env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
253 env->cpu[cpu].die_id = cpu_map__get_die_id(cpu);
256 env->nr_cpus_avail = nr_cpus;
260 int perf_env__read_cpuid(struct perf_env *env)
263 int err = get_cpuid(cpuid, sizeof(cpuid));
269 env->cpuid = strdup(cpuid);
270 if (env->cpuid == NULL)
275 static int perf_env__read_arch(struct perf_env *env)
283 env->arch = strdup(uts.machine);
285 return env->arch ? 0 : -ENOMEM;
288 static int perf_env__read_nr_cpus_avail(struct perf_env *env)
290 if (env->nr_cpus_avail == 0)
291 env->nr_cpus_avail = cpu__max_present_cpu();
293 return env->nr_cpus_avail ? 0 : -ENOENT;
296 const char *perf_env__raw_arch(struct perf_env *env)
298 return env && !perf_env__read_arch(env) ? env->arch : "unknown";
301 int perf_env__nr_cpus_avail(struct perf_env *env)
303 return env && !perf_env__read_nr_cpus_avail(env) ? env->nr_cpus_avail : 0;
306 void cpu_cache_level__free(struct cpu_cache_level *cache)
314 * Return architecture name in a normalized form.
315 * The conversion logic comes from the Makefile.
317 static const char *normalize_arch(char *arch)
319 if (!strcmp(arch, "x86_64"))
321 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
323 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
325 if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
327 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
329 if (!strncmp(arch, "s390", 4))
331 if (!strncmp(arch, "parisc", 6))
333 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
335 if (!strncmp(arch, "mips", 4))
337 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
343 const char *perf_env__arch(struct perf_env *env)
348 if (!env || !env->arch) { /* Assume local operation */
351 arch_name = uts.machine;
353 arch_name = env->arch;
355 return normalize_arch(arch_name);