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PM QoS: Add global notification mechanism for device constraints

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Add a global notification chain that gets called upon changes to the
aggregated constraint value for any device.
The notification callbacks are passing the full constraint request data
in order for the callees to have access to it. The current use is for the
platform low-level code to access the target device of the constraint.

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>
This commit is contained in:
Jean Pihet 2011-08-25 15:35:47 +02:00 • committed by Rafael J. Wysocki
parent 91ff4cb803
commit b66213cdb0
3 changed files with 87 additions and 15 deletions
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2
kernel/power/qos.c
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@ -140,7 +140,7 @@ static inline int pm_qos_get_value(struct pm_qos_constraints *c)
}
}
static inline s32 pm_qos_read_value(struct pm_qos_constraints *c)
s32 pm_qos_read_value(struct pm_qos_constraints *c)
{
return c->target_value;
}