tools/perf/util/env.c

   1 #include "cpumap.h"
   2 #include "env.h"
   3 #include "util.h"
   4
   5 struct perf_env perf_env;
   6
   7 void perf_env__exit(struct perf_env *env)
   8 {
   9         int i;
  10
  11         zfree(&env->hostname);
  12         zfree(&env->os_release);
  13         zfree(&env->version);
  14         zfree(&env->arch);
  15         zfree(&env->cpu_desc);
  16         zfree(&env->cpuid);
  17         zfree(&env->cmdline);
  18         zfree(&env->cmdline_argv);
  19         zfree(&env->sibling_cores);
  20         zfree(&env->sibling_threads);
  21         zfree(&env->numa_nodes);
  22         zfree(&env->pmu_mappings);
  23         zfree(&env->cpu);
  24
  25         for (i = 0; i < env->caches_cnt; i++)
  26                 cpu_cache_level__free(&env->caches[i]);
  27         zfree(&env->caches);
  28 }
  29
  30 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
  31 {
  32         int i;
  33
  34         /* do not include NULL termination */
  35         env->cmdline_argv = calloc(argc, sizeof(char *));
  36         if (env->cmdline_argv == NULL)
  37                 goto out_enomem;
  38
  39         /*
  40          * Must copy argv contents because it gets moved around during option
  41          * parsing:
  42          */
  43         for (i = 0; i < argc ; i++) {
  44                 env->cmdline_argv[i] = argv[i];
  45                 if (env->cmdline_argv[i] == NULL)
  46                         goto out_free;
  47         }
  48
  49         env->nr_cmdline = argc;
  50
  51         return 0;
  52 out_free:
  53         zfree(&env->cmdline_argv);
  54 out_enomem:
  55         return -ENOMEM;
  56 }
  57
  58 int perf_env__read_cpu_topology_map(struct perf_env *env)
  59 {
  60         int cpu, nr_cpus;
  61
  62         if (env->cpu != NULL)
  63                 return 0;
  64
  65         if (env->nr_cpus_avail == 0)
  66                 env->nr_cpus_avail = sysconf(_SC_NPROCESSORS_CONF);
  67
  68         nr_cpus = env->nr_cpus_avail;
  69         if (nr_cpus == -1)
  70                 return -EINVAL;
  71
  72         env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
  73         if (env->cpu == NULL)
  74                 return -ENOMEM;
  75
  76         for (cpu = 0; cpu < nr_cpus; ++cpu) {
  77                 env->cpu[cpu].core_id   = cpu_map__get_core_id(cpu);
  78                 env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
  79         }
  80
  81         env->nr_cpus_avail = nr_cpus;
  82         return 0;
  83 }
  84
  85 void cpu_cache_level__free(struct cpu_cache_level *cache)
  86 {
  87         free(cache->type);
  88         free(cache->map);
  89         free(cache->size);
  90 }