cpuidle take2: Hookup ACPI C-states driver with cpuidle

PATCH In review Venkatesh Pallipadi 1 participant 1 message Feb 22, 2007

Subsystems (2)

ACPI ACPI component architecture (acpica)

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Venkatesh Pallipadi

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2007-02-22 21:54 UTC #0 lore raw

PATCH 2/3 cpuidle take2: Hookup ACPI C-states driver with cpuidle

Hookup ACPI C-states onto generic cpuidle infrastructure.

drivers/acpi/procesor_idle.c is now a ACPI C-states driver that registers as a driver in cpuidle infrastructure and the policy part is removed from drivers/acpi/processor_idle.c. We use governor in cpuidle instead.

Signed-off-by Shaohua Li <[email protected]>

Signed-off-by Venkatesh Pallipadi <[email protected]>

Signed-off-by Adam Belay <[email protected]>

drivers/acpi/processor_core.c +3 -0

Index: linux-2.6.21-rc-mm/drivers/acpi/processor_core.c
===================================================================
@@ -44,6 +44,7 @@
 #include <linux/seq_file.h>
 #include <linux/dmi.h>
 #include <linux/moduleparam.h>
+#include <linux/cpuidle.h>
 
 #include <asm/io.h>
 #include <asm/system.h>

@@ -1024,11 +1025,13 @@ static int __init acpi_processor_init(vo
 
 	acpi_processor_ppc_init();
 
+	cpuidle_register_driver(&acpi_idle_driver);
 	return 0;
 }
 
 static void __exit acpi_processor_exit(void)
 {
+	cpuidle_unregister_driver(&acpi_idle_driver);
 
 	acpi_processor_ppc_exit();

drivers/acpi/processor_idle.c +332 ~~-536~~

961 lines not on this page · raw message

include/acpi/processor.h +2 -0

Index: linux-2.6.21-rc-mm/include/acpi/processor.h
===================================================================
@@ -161,6 +161,7 @@ struct acpi_processor_flags {
 	u8 bm_check:1;
 	u8 has_cst:1;
 	u8 power_setup_done:1;
+	u8 bm_rld_set:1;
 };
 
 struct acpi_processor {

@@ -275,6 +276,7 @@ int acpi_processor_power_init(struct acp
 int acpi_processor_cst_has_changed(struct acpi_processor *pr);
 int acpi_processor_power_exit(struct acpi_processor *pr,
 			      struct acpi_device *device);
+extern struct cpuidle_driver acpi_idle_driver;
 
 /* in processor_thermal.c */
 int acpi_processor_get_limit_info(struct acpi_processor *pr);