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Diffstat (limited to 'drivers/acpi/processor_core.c')
-rw-r--r--drivers/acpi/processor_core.c47
1 files changed, 28 insertions, 19 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 7c50a4c6c657..4d91b32423a9 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -19,24 +19,6 @@
19#define _COMPONENT ACPI_PROCESSOR_COMPONENT 19#define _COMPONENT ACPI_PROCESSOR_COMPONENT
20ACPI_MODULE_NAME("processor_core"); 20ACPI_MODULE_NAME("processor_core");
21 21
22static int __init set_no_mwait(const struct dmi_system_id *id)
23{
24 printk(KERN_NOTICE PREFIX "%s detected - "
25 "disabling mwait for CPU C-states\n", id->ident);
26 boot_option_idle_override = IDLE_NOMWAIT;
27 return 0;
28}
29
30static struct dmi_system_id processor_idle_dmi_table[] __initdata = {
31 {
32 set_no_mwait, "Extensa 5220", {
33 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
34 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
35 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
36 DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
37 {},
38};
39
40static int map_lapic_id(struct acpi_subtable_header *entry, 22static int map_lapic_id(struct acpi_subtable_header *entry,
41 u32 acpi_id, int *apic_id) 23 u32 acpi_id, int *apic_id)
42{ 24{
@@ -379,13 +361,40 @@ early_init_pdc(acpi_handle handle, u32 lvl, void *context, void **rv)
379 return AE_OK; 361 return AE_OK;
380} 362}
381 363
382void __init acpi_early_processor_set_pdc(void) 364#if defined(CONFIG_X86) || defined(CONFIG_IA64)
365static int __init set_no_mwait(const struct dmi_system_id *id)
366{
367 pr_notice(PREFIX "%s detected - disabling mwait for CPU C-states\n",
368 id->ident);
369 boot_option_idle_override = IDLE_NOMWAIT;
370 return 0;
371}
372
373static struct dmi_system_id processor_idle_dmi_table[] __initdata = {
374 {
375 set_no_mwait, "Extensa 5220", {
376 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"),
377 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
378 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
379 DMI_MATCH(DMI_BOARD_NAME, "Columbia") }, NULL},
380 {},
381};
382
383static void __init processor_dmi_check(void)
383{ 384{
384 /* 385 /*
385 * Check whether the system is DMI table. If yes, OSPM 386 * Check whether the system is DMI table. If yes, OSPM
386 * should not use mwait for CPU-states. 387 * should not use mwait for CPU-states.
387 */ 388 */
388 dmi_check_system(processor_idle_dmi_table); 389 dmi_check_system(processor_idle_dmi_table);
390}
391#else
392static inline void processor_dmi_check(void) {}
393#endif
394
395void __init acpi_early_processor_set_pdc(void)
396{
397 processor_dmi_check();
389 398
390 acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, 399 acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT,
391 ACPI_UINT32_MAX, 400 ACPI_UINT32_MAX,