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->pmu_mappings);
  22        zfree(&env->cpu);
  23
  24        for (i = 0; i < env->nr_numa_nodes; i++)
  25                cpu_map__put(env->numa_nodes[i].map);
  26        zfree(&env->numa_nodes);
  27
  28        for (i = 0; i < env->caches_cnt; i++)
  29                cpu_cache_level__free(&env->caches[i]);
  30        zfree(&env->caches);
  31}
  32
  33int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
  34{
  35        int i;
  36
  37        /* do not include NULL termination */
  38        env->cmdline_argv = calloc(argc, sizeof(char *));
  39        if (env->cmdline_argv == NULL)
  40                goto out_enomem;
  41
  42        /*
  43         * Must copy argv contents because it gets moved around during option
  44         * parsing:
  45         */
  46        for (i = 0; i < argc ; i++) {
  47                env->cmdline_argv[i] = argv[i];
  48                if (env->cmdline_argv[i] == NULL)
  49                        goto out_free;
  50        }
  51
  52        env->nr_cmdline = argc;
  53
  54        return 0;
  55out_free:
  56        zfree(&env->cmdline_argv);
  57out_enomem:
  58        return -ENOMEM;
  59}
  60
  61int perf_env__read_cpu_topology_map(struct perf_env *env)
  62{
  63        int cpu, nr_cpus;
  64
  65        if (env->cpu != NULL)
  66                return 0;
  67
  68        if (env->nr_cpus_avail == 0)
  69                env->nr_cpus_avail = sysconf(_SC_NPROCESSORS_CONF);
  70
  71        nr_cpus = env->nr_cpus_avail;
  72        if (nr_cpus == -1)
  73                return -EINVAL;
  74
  75        env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
  76        if (env->cpu == NULL)
  77                return -ENOMEM;
  78
  79        for (cpu = 0; cpu < nr_cpus; ++cpu) {
  80                env->cpu[cpu].core_id   = cpu_map__get_core_id(cpu);
  81                env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
  82        }
  83
  84        env->nr_cpus_avail = nr_cpus;
  85        return 0;
  86}
  87
  88void cpu_cache_level__free(struct cpu_cache_level *cache)
  89{
  90        free(cache->type);
  91        free(cache->map);
  92        free(cache->size);
  93}
  94