/*
* 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;
}
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;
}