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
   7 struct perf_env perf_env;
   8
   9 void 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
  35 int 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;
  57 out_free:
  58         zfree(&env->cmdline_argv);
  59 out_enomem:
  60         return -ENOMEM;
  61 }
  62
  63 int 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
  90 void cpu_cache_level__free(struct cpu_cache_level *cache)
  91 {
  92         free(cache->type);
  93         free(cache->map);
  94         free(cache->size);
  95 }