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PM / QoS: unconditionally build the feature 

The PM QoS feature originally didn't depend on CONFIG_PM, which was
mistakenly changed by commit e8db0be124

    PM QoS: Move and rename the implementation files

Later, commit d020283dc6

    PM / QoS: CPU C-state breakage with PM Qos change

partially fixed that by introducing a static inline definition of
pm_qos_request(), but that still didn't allow user space to use
the PM QoS interface if CONFIG_PM was unset (which had been possible
before).  For this reason, remove the dependency of PM QoS on
CONFIG_PM to make it work (as intended) with CONFIG_PM unset.

[rjw: Replaced the original changelog with a new one.]

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Reported-by: Venkatesh Pallipadi <venki@google.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Jean Pihet 2012-02-13 16:23:42 +01:00 committed by Rafael J. Wysocki
parent 654b0c9627
commit a9b542ee60
2 changed files with 3 additions and 41 deletions
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41
include/linux/pm_qos.h
View File

@ -67,7 +67,6 @@ 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,
@ -82,6 +81,7 @@ 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,
@ -99,45 +99,6 @@ 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)

3
kernel/power/Makefile
View File

@ -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