static int __init cstate_init(void)
{
int err;
cpuhp_setup_state(CPUHP_AP_PERF_X86_CSTATE_STARTING,
"perf/x86/cstate:starting", cstate_cpu_init, NULL);
cpuhp_setup_state(CPUHP_AP_PERF_X86_CSTATE_ONLINE,
"perf/x86/cstate:online", NULL, cstate_cpu_exit);
if (has_cstate_core) {
err = perf_pmu_register(&cstate_core_pmu, cstate_core_pmu.name, -1);
if (err) {
has_cstate_core = false;
pr_info("Failed to register cstate core pmu\n");
cstate_cleanup();
return err;
}
}
if (has_cstate_pkg) {
err = perf_pmu_register(&cstate_pkg_pmu, cstate_pkg_pmu.name, -1);
if (err) {
has_cstate_pkg = false;
pr_info("Failed to register cstate pkg pmu\n");
cstate_cleanup();
return err;
}
}
return 0;
}
static void __exit cstate_pmu_exit(void)
{
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_ONLINE);
cpuhp_remove_state_nocalls(CPUHP_AP_PERF_X86_CSTATE_STARTING);
cstate_cleanup();
}
static void __exit cstate_pmu_exit(void)
{
cstate_cleanup();
}
