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| author |   MyungJoo Ham <myungjoo.ham@samsung.com> | 2012-03-28 23:31:24 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rjw@sisk.pl> | 2012-03-28 23:31:24 +0200 |
| commit | c4772d192c70b61d52262b0db76f7abd8aeb51c6 (patch) | |
| tree | 843ed935b04ed2e2ea8abbafa04f65132f47ba5a /include/linux/pm_qos.h | |
| parent | firmware_class: Move request_firmware_nowait() to workqueues (diff) | |
| download | wireguard-linux-c4772d192c70b61d52262b0db76f7abd8aeb51c6.tar.xz wireguard-linux-c4772d192c70b61d52262b0db76f7abd8aeb51c6.zip | |
PM / QoS: add pm_qos_update_request_timeout() API
The new API, pm_qos_update_request_timeout() is to provide a timeout
with pm_qos_update_request.
For example, pm_qos_update_request_timeout(req, 100, 1000), means that
QoS request on req with value 100 will be active for 1000 microseconds.
After 1000 microseconds, the QoS request thru req is reset. If there
were another pm_qos_update_request(req, x) during the 1000 us, this
new request with value x will override as this is another request on the
same req handle. A new request on the same req handle will always
override the previous request whether it is the conventional request or
it is the new timeout request.
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Gross <markgross@thegnar.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/pm_qos.h')
| -rw-r--r-- | include/linux/pm_qos.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 2e9191a712f3..233149cb19f4 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -8,6 +8,7 @@ #include <linux/notifier.h> #include <linux/miscdevice.h> #include <linux/device.h> +#include <linux/workqueue.h> enum { PM_QOS_RESERVED = 0, @@ -29,6 +30,7 @@ enum { struct pm_qos_request { struct plist_node node; int pm_qos_class; + struct delayed_work work; /* for pm_qos_update_request_timeout */ }; struct dev_pm_qos_request { @@ -73,6 +75,8 @@ void pm_qos_add_request(struct pm_qos_request *req, int pm_qos_class, s32 value); void pm_qos_update_request(struct pm_qos_request *req, s32 new_value); +void pm_qos_update_request_timeout(struct pm_qos_request *req, + s32 new_value, unsigned long timeout_us); void pm_qos_remove_request(struct pm_qos_request *req); int pm_qos_request(int pm_qos_class); |