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