LXR linux/tools/perf/util/env.c

   1#include "cpumap.h"
   2#include "env.h"
   3#include "util.h"
   4
   5struct perf_env perf_env;
   6
   7void 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
  30int 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;
  52out_free:
  53        zfree(&env->cmdline_argv);
  54out_enomem:
  55        return -ENOMEM;
  56}
  57
  58int 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
  85void cpu_cache_level__free(struct cpu_cache_level *cache)
  86{
  87        free(cache->type);
  88        free(cache->map);
  89        free(cache->size);
  90}
  91