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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 17:34:12 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 17:34:12 +0400 |
| commit | 4605ab653c1f9d7cc2dda8033de215c9cee325f4 (patch) | |
| tree | 8f55aa3137973ce2a3ef0ed49c44304e148d50fe /include/linux/pm_runtime.h | |
| parent | ef27bed1870dbd5fd363ff5ec51eebd5a695e277 (diff) | |
| download | linux-4605ab653c1f9d7cc2dda8033de215c9cee325f4.tar.xz | |
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/linux/pm_runtime.h')
| -rw-r--r-- | include/linux/pm_runtime.h | 10 |
1 files changed, 10 insertions, 0 deletions
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) { } |