EXPORT_SYMBOL(acpi_processor_notify_smm);
-static int acpi_processor_get_psd(struct acpi_processor *pr)
+int acpi_processor_get_psd(acpi_handle handle, struct acpi_psd_package *pdomain)
{
int result = 0;
acpi_status status = AE_OK;
struct acpi_buffer format = {sizeof("NNNNN"), "NNNNN"};
struct acpi_buffer state = {0, NULL};
union acpi_object *psd = NULL;
- struct acpi_psd_package *pdomain;
- status = acpi_evaluate_object(pr->handle, "_PSD", NULL, &buffer);
+ status = acpi_evaluate_object(handle, "_PSD", NULL, &buffer);
if (ACPI_FAILURE(status)) {
return -ENODEV;
}
goto end;
}
- pdomain = &(pr->performance->domain_info);
-
state.length = sizeof(struct acpi_psd_package);
state.pointer = pdomain;
kfree(buffer.pointer);
return result;
}
+EXPORT_SYMBOL(acpi_processor_get_psd);
int acpi_processor_preregister_performance(
struct acpi_processor_performance __percpu *performance)
pr->performance = per_cpu_ptr(performance, i);
cpumask_set_cpu(i, pr->performance->shared_cpu_map);
- if (acpi_processor_get_psd(pr)) {
+ pdomain = &(pr->performance->domain_info);
+ if (acpi_processor_get_psd(pr->handle, pdomain)) {
retval = -EINVAL;
continue;
}
static unsigned long *acpi_id_present;
/* And if there is an _CST definition (or a PBLK) for the ACPI IDs */
static unsigned long *acpi_id_cst_present;
+/* Which ACPI P-State dependencies for a enumerated processor */
+static struct acpi_psd_package *acpi_psd;
static int push_cxx_to_hypervisor(struct acpi_processor *_pr)
{
pr_debug("ACPI CPU%u w/ PBLK:0x%lx\n", acpi_id, (unsigned long)pblk);
+ /* It has P-state dependencies */
+ if (!acpi_processor_get_psd(handle, &acpi_psd[acpi_id])) {
+ pr_debug("ACPI CPU%u w/ PST:coord_type = %llu domain = %llu\n",
+ acpi_id, acpi_psd[acpi_id].coord_type,
+ acpi_psd[acpi_id].domain);
+ }
+
status = acpi_evaluate_object(handle, "_CST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
if (!pblk)
return -ENOMEM;
}
+ acpi_psd = kcalloc(nr_acpi_bits, sizeof(struct acpi_psd_package),
+ GFP_KERNEL);
+ if (!acpi_psd) {
+ kfree(acpi_id_present);
+ kfree(acpi_id_cst_present);
+ return -ENOMEM;
+ }
+
acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
ACPI_UINT32_MAX,
read_acpi_id, NULL, NULL, NULL);
pr_backup->acpi_id = i;
/* Mask out C-states if there are no _CST or PBLK */
pr_backup->flags.power = test_bit(i, acpi_id_cst_present);
+ /* num_entries is non-zero if we evaluated _PSD */
+ if (acpi_psd[i].num_entries) {
+ memcpy(&pr_backup->performance->domain_info,
+ &acpi_psd[i],
+ sizeof(struct acpi_psd_package));
+ }
(void)upload_pm_data(pr_backup);
}
}
kfree(acpi_ids_done);
kfree(acpi_id_present);
kfree(acpi_id_cst_present);
+ kfree(acpi_psd);
for_each_possible_cpu(i)
acpi_processor_unregister_performance(i);
/* note: this locks both the calling module and the processor module
if a _PPC object exists, rmmod is disallowed then */
int acpi_processor_notify_smm(struct module *calling_module);
+int acpi_processor_get_psd(acpi_handle handle,
+ struct acpi_psd_package *pdomain);
/* parsing the _P* objects. */
extern int acpi_processor_get_performance_info(struct acpi_processor *pr);