1 // SPDX-License-Identifier: GPL-2.0
4 #include "sane_ctype.h"
7 #include <sys/utsname.h>
9 struct perf_env perf_env;
11 void perf_env__exit(struct perf_env *env)
15 zfree(&env->hostname);
16 zfree(&env->os_release);
19 zfree(&env->cpu_desc);
22 zfree(&env->cmdline_argv);
23 zfree(&env->sibling_cores);
24 zfree(&env->sibling_threads);
25 zfree(&env->pmu_mappings);
28 for (i = 0; i < env->nr_numa_nodes; i++)
29 cpu_map__put(env->numa_nodes[i].map);
30 zfree(&env->numa_nodes);
32 for (i = 0; i < env->caches_cnt; i++)
33 cpu_cache_level__free(&env->caches[i]);
36 for (i = 0; i < env->nr_memory_nodes; i++)
37 free(env->memory_nodes[i].set);
38 zfree(&env->memory_nodes);
41 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
45 /* do not include NULL termination */
46 env->cmdline_argv = calloc(argc, sizeof(char *));
47 if (env->cmdline_argv == NULL)
51 * Must copy argv contents because it gets moved around during option
54 for (i = 0; i < argc ; i++) {
55 env->cmdline_argv[i] = argv[i];
56 if (env->cmdline_argv[i] == NULL)
60 env->nr_cmdline = argc;
64 zfree(&env->cmdline_argv);
69 int perf_env__read_cpu_topology_map(struct perf_env *env)
76 if (env->nr_cpus_avail == 0)
77 env->nr_cpus_avail = cpu__max_present_cpu();
79 nr_cpus = env->nr_cpus_avail;
83 env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
87 for (cpu = 0; cpu < nr_cpus; ++cpu) {
88 env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
89 env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
92 env->nr_cpus_avail = nr_cpus;
96 static int perf_env__read_arch(struct perf_env *env)
104 env->arch = strdup(uts.machine);
106 return env->arch ? 0 : -ENOMEM;
109 static int perf_env__read_nr_cpus_avail(struct perf_env *env)
111 if (env->nr_cpus_avail == 0)
112 env->nr_cpus_avail = cpu__max_present_cpu();
114 return env->nr_cpus_avail ? 0 : -ENOENT;
117 const char *perf_env__raw_arch(struct perf_env *env)
119 return env && !perf_env__read_arch(env) ? env->arch : "unknown";
122 int perf_env__nr_cpus_avail(struct perf_env *env)
124 return env && !perf_env__read_nr_cpus_avail(env) ? env->nr_cpus_avail : 0;
127 void cpu_cache_level__free(struct cpu_cache_level *cache)
135 * Return architecture name in a normalized form.
136 * The conversion logic comes from the Makefile.
138 static const char *normalize_arch(char *arch)
140 if (!strcmp(arch, "x86_64"))
142 if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
144 if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
146 if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
148 if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
150 if (!strncmp(arch, "s390", 4))
152 if (!strncmp(arch, "parisc", 6))
154 if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
156 if (!strncmp(arch, "mips", 4))
158 if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
164 const char *perf_env__arch(struct perf_env *env)
169 if (!env || !env->arch) { /* Assume local operation */
172 arch_name = uts.machine;
174 arch_name = env->arch;
176 return normalize_arch(arch_name);