+ for_each_cpu_mask(i, online_throttling_cpus) {
+ t_state.cpu = i;
+ acpi_processor_throttling_notifier(THROTTLING_PRECHANGE,
+ &t_state);
+ }
+ /*
+ * The function of acpi_processor_set_throttling will be called
+ * to switch T-state. If the coordination type is SW_ALL or HW_ALL,
+ * it is necessary to call it for every affected cpu. Otherwise
+ * it can be called only for the cpu pointed by pr.
+ */
+ if (p_throttling->shared_type == DOMAIN_COORD_TYPE_SW_ANY) {
+ set_cpus_allowed(current, cpumask_of_cpu(pr->id));
+ ret = p_throttling->acpi_processor_set_throttling(pr,
+ t_state.target_state);
+ } else {
+ /*
+ * When the T-state coordination is SW_ALL or HW_ALL,
+ * it is necessary to set T-state for every affected
+ * cpus.
+ */
+ for_each_cpu_mask(i, online_throttling_cpus) {
+ match_pr = processors[i];
+ /*
+ * If the pointer is invalid, we will report the
+ * error message and continue.
+ */
+ if (!match_pr) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Invalid Pointer for CPU %d\n", i));
+ continue;
+ }
+ /*
+ * If the throttling control is unsupported on CPU i,
+ * we will report the error message and continue.
+ */
+ if (!match_pr->flags.throttling) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Throttling Controll is unsupported "
+ "on CPU %d\n", i));
+ continue;
+ }
+ t_state.cpu = i;
+ set_cpus_allowed(current, cpumask_of_cpu(i));
+ ret = match_pr->throttling.
+ acpi_processor_set_throttling(
+ match_pr, t_state.target_state);
+ }
+ }
+ /*
+ * After the set_throttling is called, the
+ * throttling notifier is called for every
+ * affected cpu to update the T-states.
+ * The notifier event is THROTTLING_POSTCHANGE
+ */
+ for_each_cpu_mask(i, online_throttling_cpus) {
+ t_state.cpu = i;
+ acpi_processor_throttling_notifier(THROTTLING_POSTCHANGE,
+ &t_state);
+ }