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| author | Jean Pihet | 2011-08-25 15:35:41 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki | 2011-08-25 15:35:41 +0200 |
| commit | 91ff4cb803df6de9114351b9f2f0f39f397ee03e (patch) | |
| tree | eb24c7df28d0f93557ac1d9e7d72a79fc3556b97 /kernel/power/qos.c | |
| parent | PM QoS: Generalize and export constraints management code (diff) | |
| download | kernel-qcow2-linux-91ff4cb803df6de9114351b9f2f0f39f397ee03e.tar.gz kernel-qcow2-linux-91ff4cb803df6de9114351b9f2f0f39f397ee03e.tar.xz kernel-qcow2-linux-91ff4cb803df6de9114351b9f2f0f39f397ee03e.zip | |
PM QoS: Implement per-device PM QoS constraints
Implement the per-device PM QoS constraints by creating a device
PM QoS API, which calls the PM QoS constraints management core code.
The per-device latency constraints data strctures are stored
in the device dev_pm_info struct.
The device PM code calls the init and destroy of the per-device constraints
data struct in order to support the dynamic insertion and removal of the
devices in the system.
To minimize the data usage by the per-device constraints, the data struct
is only allocated at the first call to dev_pm_qos_add_request.
The data is later free'd when the device is removed from the system.
A global mutex protects the constraints users from the data being
allocated and free'd.
Signed-off-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/qos.c')
0 files changed, 0 insertions, 0 deletions