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-rw-r--r--kernel/tools/perf/util/env.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/kernel/tools/perf/util/env.c b/kernel/tools/perf/util/env.c
new file mode 100644
index 000000000..6af4f7c36
--- /dev/null
+++ b/kernel/tools/perf/util/env.c
@@ -0,0 +1,86 @@
+#include "cpumap.h"
+#include "env.h"
+#include "util.h"
+
+struct perf_env perf_env;
+
+void perf_env__exit(struct perf_env *env)
+{
+ zfree(&env->hostname);
+ zfree(&env->os_release);
+ zfree(&env->version);
+ zfree(&env->arch);
+ zfree(&env->cpu_desc);
+ zfree(&env->cpuid);
+ zfree(&env->cmdline);
+ zfree(&env->cmdline_argv);
+ zfree(&env->sibling_cores);
+ zfree(&env->sibling_threads);
+ zfree(&env->numa_nodes);
+ zfree(&env->pmu_mappings);
+ zfree(&env->cpu);
+}
+
+int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[])
+{
+ int i;
+
+ /*
+ * If env->cmdline_argv has already been set, do not override it. This allows
+ * a command to set the cmdline, parse args and then call another
+ * builtin function that implements a command -- e.g, cmd_kvm calling
+ * cmd_record.
+ */
+ if (env->cmdline_argv != NULL)
+ return 0;
+
+ /* do not include NULL termination */
+ env->cmdline_argv = calloc(argc, sizeof(char *));
+ if (env->cmdline_argv == NULL)
+ goto out_enomem;
+
+ /*
+ * Must copy argv contents because it gets moved around during option
+ * parsing:
+ */
+ for (i = 0; i < argc ; i++) {
+ env->cmdline_argv[i] = argv[i];
+ if (env->cmdline_argv[i] == NULL)
+ goto out_free;
+ }
+
+ env->nr_cmdline = argc;
+
+ return 0;
+out_free:
+ zfree(&env->cmdline_argv);
+out_enomem:
+ return -ENOMEM;
+}
+
+int perf_env__read_cpu_topology_map(struct perf_env *env)
+{
+ int cpu, nr_cpus;
+
+ if (env->cpu != NULL)
+ return 0;
+
+ if (env->nr_cpus_avail == 0)
+ env->nr_cpus_avail = sysconf(_SC_NPROCESSORS_CONF);
+
+ nr_cpus = env->nr_cpus_avail;
+ if (nr_cpus == -1)
+ return -EINVAL;
+
+ env->cpu = calloc(nr_cpus, sizeof(env->cpu[0]));
+ if (env->cpu == NULL)
+ return -ENOMEM;
+
+ for (cpu = 0; cpu < nr_cpus; ++cpu) {
+ env->cpu[cpu].core_id = cpu_map__get_core_id(cpu);
+ env->cpu[cpu].socket_id = cpu_map__get_socket_id(cpu);
+ }
+
+ env->nr_cpus_avail = nr_cpus;
+ return 0;
+}