Hi Rafael,
2012/2/13 Rafael J. Wysocki <rjw@xxxxxxx>:
> On Monday, February 13, 2012, Jean Pihet wrote:
>> The PM QoS feature depends on CONFIG_PM which depends on
>> PM_SLEEP || PM_RUNTIME. This breaks CPU C-states with kernels
>> not having these CONFIGs.
>>
>> This patch allows the feature in all cases.
>>
>> Signed-off-by: Jean Pihet <j-pihet@xxxxxx>
>> Reported-by: Venkatesh Pallipadi <venki@xxxxxxxxxx>
>> Cc: Rafael J. Wysocki <rjw@xxxxxxx>
>> Cc: Mark Gross <markgross@xxxxxxxxxxx>
>
> Applied, but I modified the changelog (please have a look at the
> linux-pm/pm-qos branch for details).
Ok thanks! Will look at it as soon as the changes are propagated to linux-pm.
>
> Thanks,
> Rafael
>
Jean
>
>> ---
>> include/linux/pm_qos.h | 41 +----------------------------------------
>> kernel/power/Makefile | 3 ++-
>> 2 files changed, 3 insertions(+), 41 deletions(-)
>>
>> diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
>> index 4d99e4e..105be69 100644
>> --- a/include/linux/pm_qos.h
>> +++ b/include/linux/pm_qos.h
>> @@ -63,7 +63,6 @@ static inline int dev_pm_qos_request_active(struct dev_pm_qos_request *req)
>> return req->dev != 0;
>> }
>>
>> -#ifdef CONFIG_PM
>> int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,
>> enum pm_qos_req_action action, int value);
>> void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class,
>> @@ -78,6 +77,7 @@ int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
>> int pm_qos_request_active(struct pm_qos_request *req);
>> s32 pm_qos_read_value(struct pm_qos_constraints *c);
>>
>> +#ifdef CONFIG_PM
>> s32 __dev_pm_qos_read_value(struct device *dev);
>> s32 dev_pm_qos_read_value(struct device *dev);
>> int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
>> @@ -95,45 +95,6 @@ void dev_pm_qos_constraints_destroy(struct device *dev);
>> int dev_pm_qos_add_ancestor_request(struct device *dev,
>> struct dev_pm_qos_request *req, s32 value);
>> #else
>> -static inline int pm_qos_update_target(struct pm_qos_constraints *c,
>> - struct plist_node *node,
>> - enum pm_qos_req_action action,
>> - int value)
>> - { return 0; }
>> -static inline void pm_qos_add_request(struct pm_qos_request *req,
>> - int pm_qos_class, s32 value)
>> - { return; }
>> -static inline void pm_qos_update_request(struct pm_qos_request *req,
>> - s32 new_value)
>> - { return; }
>> -static inline void pm_qos_remove_request(struct pm_qos_request *req)
>> - { return; }
>> -
>> -static inline int pm_qos_request(int pm_qos_class)
>> -{
>> - switch (pm_qos_class) {
>> - case PM_QOS_CPU_DMA_LATENCY:
>> - return PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
>> - case PM_QOS_NETWORK_LATENCY:
>> - return PM_QOS_NETWORK_LAT_DEFAULT_VALUE;
>> - case PM_QOS_NETWORK_THROUGHPUT:
>> - return PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE;
>> - default:
>> - return PM_QOS_DEFAULT_VALUE;
>> - }
>> -}
>> -
>> -static inline int pm_qos_add_notifier(int pm_qos_class,
>> - struct notifier_block *notifier)
>> - { return 0; }
>> -static inline int pm_qos_remove_notifier(int pm_qos_class,
>> - struct notifier_block *notifier)
>> - { return 0; }
>> -static inline int pm_qos_request_active(struct pm_qos_request *req)
>> - { return 0; }
>> -static inline s32 pm_qos_read_value(struct pm_qos_constraints *c)
>> - { return 0; }
>> -
>> static inline s32 __dev_pm_qos_read_value(struct device *dev)
>> { return 0; }
>> static inline s32 dev_pm_qos_read_value(struct device *dev)
>> diff --git a/kernel/power/Makefile b/kernel/power/Makefile
>> index 07e0e28..66d808e 100644
>> --- a/kernel/power/Makefile
>> +++ b/kernel/power/Makefile
>> @@ -1,7 +1,8 @@
>>
>> ccflags-$(CONFIG_PM_DEBUG) := -DDEBUG
>>
>> -obj-$(CONFIG_PM) += main.o qos.o
>> +obj-y += qos.o
>> +obj-$(CONFIG_PM) += main.o
>> obj-$(CONFIG_VT_CONSOLE_SLEEP) += console.o
>> obj-$(CONFIG_FREEZER) += process.o
>> obj-$(CONFIG_SUSPEND) += suspend.o
>>
>
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