Exemple #1
0
/*
 * Returns amount of cpus, negative on error, cpu_top must be
 * passed to cpu_topology_release to free resources
 *
 * Array is sorted after ->pkg, ->core, then ->cpu
 */
int get_cpu_topology(struct cpupower_topology *cpu_top)
{
	int cpu, cpus = sysconf(_SC_NPROCESSORS_CONF);

	cpu_top->core_info = malloc(sizeof(struct cpupower_topology) * cpus);
	if (cpu_top->core_info == NULL)
		return -ENOMEM;
	cpu_top->pkgs = cpu_top->cores = 0;
	for (cpu = 0; cpu < cpus; cpu++) {
		cpu_top->core_info[cpu].cpu = cpu;
		cpu_top->core_info[cpu].is_online = sysfs_is_cpu_online(cpu);
		cpu_top->core_info[cpu].pkg =
			sysfs_topology_read_file(cpu, "physical_package_id");
		if ((int)cpu_top->core_info[cpu].pkg != -1 &&
		    cpu_top->core_info[cpu].pkg > cpu_top->pkgs)
			cpu_top->pkgs = cpu_top->core_info[cpu].pkg;
		cpu_top->core_info[cpu].core =
			sysfs_topology_read_file(cpu, "core_id");
	}
	cpu_top->pkgs++;

	qsort(cpu_top->core_info, cpus, sizeof(struct cpuid_core_info),
	      __compare);

	/* Intel's cores count is not consecutively numbered, there may
	 * be a core_id of 3, but none of 2. Assume there always is 0
	 * Get amount of cores by counting duplicates in a package
	for (cpu = 0; cpu_top->core_info[cpu].pkg = 0 && cpu < cpus; cpu++) {
		if (cpu_top->core_info[cpu].core == 0)
	cpu_top->cores++;
	*/
	return cpus;
}
Exemple #2
0
int cmd_idle_info(int argc, char **argv)
{
	extern char *optarg;
	extern int optind, opterr, optopt;
	int ret = 0, cont = 1, output_param = 0, verbose = 1;
	unsigned int cpu = 0;

	do {
		ret = getopt_long(argc, argv, "os", info_opts, NULL);
		if (ret == -1)
			break;
		switch (ret) {
		case '?':
			output_param = '?';
			cont = 0;
			break;
		case 's':
			verbose = 0;
			break;
		case -1:
			cont = 0;
			break;
		case 'o':
			if (output_param) {
				output_param = -1;
				cont = 0;
				break;
			}
			output_param = ret;
			break;
		}
	} while (cont);

	switch (output_param) {
	case -1:
		printf(_("You can't specify more than one "
			 "output-specific argument\n"));
		cpuidle_exit(EXIT_FAILURE);
	case '?':
		printf(_("invalid or unknown argument\n"));
		cpuidle_exit(EXIT_FAILURE);
	}

	/* Default is: show output of CPU 0 only */
	if (bitmask_isallclear(cpus_chosen))
		bitmask_setbit(cpus_chosen, 0);

	if (output_param == 0)
		cpuidle_general_output();

	for (cpu = bitmask_first(cpus_chosen);
	     cpu <= bitmask_last(cpus_chosen); cpu++) {

		if (!bitmask_isbitset(cpus_chosen, cpu))
			continue;

		printf(_("analyzing CPU %d:\n"), cpu);

		if (sysfs_is_cpu_online(cpu) != 1) {
			printf(_(" *is offline\n"));
			printf("\n");
			continue;
		}

		switch (output_param) {

		case 'o':
			proc_cpuidle_cpu_output(cpu);
			break;
		case 0:
			printf("\n");
			cpuidle_cpu_output(cpu, verbose);
			break;
		}
		printf("\n");
	}
	return EXIT_SUCCESS;
}