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PM / Domains: Use power.sybsys_data to reduce overhead

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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>
This commit is contained in:
Rafael J. Wysocki
2011-08-25 15:34:12 +02:00
parent ef27bed187
commit 4605ab653c
5 changed files with 51 additions and 67 deletions
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9
include/linux/pm.h
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@@ -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 {