1 files changed, 86 insertions, 0 deletions
diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
new file mode 100644
index 000000000000..6af4f7c36820
--- /dev/null
+++ b/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;
+}