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

   1// SPDX-License-Identifier: GPL-2.0
   2#include "cpumap.h"
   3#include "env.h"
   4#include "util.h"
   5#include <errno.h>
   6
   7struct perf_env perf_env;
   8
   9void perf_env__exit(struct perf_env *env)
  10{
  11        int i;
  12
  13        zfree(&env->hostname);
  14        zfree(&env->os_release);
  15        zfree(&env->version);
  16        zfree(&env->arch);
  17        zfree(&env->cpu_desc);
  18        zfree(&env->cpuid);
  19        zfree(&env->cmdline);
  20        zfree(&env->cmdline_argv);
  21        zfree(&env->sibling_cores);
  22        zfree(&env->sibling_threads);
  23        zfree(&env->pmu_mappings);
  24        zfree(&env->cpu);
  25
  26        for (i = 0; i < env->nr_numa_nodes; i++)
  27                cpu_map__put(env->numa_nodes[i].map);
  28        zfree(&env->numa_nodes);
  29
  30        for (i = 0; i < env->caches_cnt; i++)
  31                cpu_cache_level__free(&env->caches[i]);
  32        zfree(&env->caches);
  33}
  34
  35int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
  36{
  37        int i;
  38
  39        /* do not include NULL termination */
  40        env->cmdline_argv = calloc(argc, sizeof(char *));
  41        if (env->cmdline_argv == NULL)
  42                goto out_enomem;
  43
  44        /*
  45         * Must copy argv contents because it gets moved around during option
  46         * parsing:
  47         */
  48        for (i = 0; i < argc ; i++) {
  49                env->cmdline_argv[i] = argv[i];
  50                if (env->cmdline_argv[i] == NULL)
  51                        goto out_free;
  52        }
  53
  54        env->nr_cmdline = argc;
  55
  56        return 0;
  57out_free:
  58        zfree(&env->cmdline_argv);
  59out_enomem:
  60        return -ENOMEM;
  61}
  62
  63int perf_env__read_cpu_topology_map(struct perf_env *env)
  64{
  65        int cpu, nr_cpus;
  66
  67        if (env->cpu != NULL)
  68                return 0;
  69
  70        if (env->nr_cpus_avail == 0)
  71                env->nr_cpus_avail = cpu__max_present_cpu();
  72
  73        nr_cpus = env->nr_cpus_avail;
  74        if (nr_cpus == -1)
  75                return -EINVAL;
  76
  77        env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
  78        if (env->cpu == NULL)
  79                return -ENOMEM;
  80
  81        for (cpu = 0; cpu < nr_cpus; ++cpu) {
  82                env->cpu[cpu].core_id   = cpu_map__get_core_id(cpu);
  83                env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
  84        }
  85
  86        env->nr_cpus_avail = nr_cpus;
  87        return 0;
  88}
  89
  90void cpu_cache_level__free(struct cpu_cache_level *cache)
  91{
  92        free(cache->type);
  93        free(cache->map);
  94        free(cache->size);
  95}
  96