diff options
author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 15:34:12 +0200 |
---|---|---|
committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 15:34:12 +0200 |
commit | 4605ab653c1f9d7cc2dda8033de215c9cee325f4 (patch) | |
tree | 8f55aa3137973ce2a3ef0ed49c44304e148d50fe /include | |
parent | PM: Reference counting of power.subsys_data (diff) | |
download | linux-4605ab653c1f9d7cc2dda8033de215c9cee325f4.tar.xz linux-4605ab653c1f9d7cc2dda8033de215c9cee325f4.zip |
PM / Domains: Use power.sybsys_data to reduce overhead
Currently pm_genpd_runtime_resume() has to walk the list of devices
from the device's PM domain to find the corresponding device list
object containing the need_restore field to check if the driver's
.runtime_resume() callback should be executed for the device.
This is suboptimal and can be simplified by using power.sybsys_data
to store device information used by the generic PM domains code.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/pm.h | 9 | ||||
-rw-r--r-- | include/linux/pm_domain.h | 6 | ||||
-rw-r--r-- | include/linux/pm_runtime.h | 10 |
3 files changed, 19 insertions, 6 deletions
diff --git a/include/linux/pm.h b/include/linux/pm.h index c6b5a0a41ab3..ed10f24d5259 100644 --- a/include/linux/pm.h +++ b/include/linux/pm.h @@ -421,12 +421,21 @@ enum rpm_request { struct wakeup_source; +struct pm_domain_data { + struct list_head list_node; + struct device *dev; + bool need_restore; +}; + struct pm_subsys_data { spinlock_t lock; unsigned int refcount; #ifdef CONFIG_PM_CLK struct list_head clock_list; #endif +#ifdef CONFIG_PM_GENERIC_DOMAINS + struct pm_domain_data domain_data; +#endif }; struct dev_pm_info { diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index bf679f59f9a8..5cce46c2d926 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -61,12 +61,6 @@ struct gpd_link { struct list_head slave_node; }; -struct dev_list_entry { - struct list_head node; - struct device *dev; - bool need_restore; -}; - #ifdef CONFIG_PM_GENERIC_DOMAINS extern int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev); diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 6b90630e3c98..a5a41a850efb 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -258,6 +258,12 @@ struct pm_clk_notifier_block { }; #ifdef CONFIG_PM_CLK +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return dev && dev->power.subsys_data + && list_empty(&dev->power.subsys_data->clock_list); +} + extern void pm_clk_init(struct device *dev); extern int pm_clk_create(struct device *dev); extern void pm_clk_destroy(struct device *dev); @@ -266,6 +272,10 @@ extern void pm_clk_remove(struct device *dev, const char *con_id); extern int pm_clk_suspend(struct device *dev); extern int pm_clk_resume(struct device *dev); #else +static inline bool pm_clk_no_clocks(struct device *dev) +{ + return true; +} static inline void pm_clk_init(struct device *dev) { } |