Messages in this thread Patch in this message | | | From | Javi Merino <> | Subject | [PATCH 3/3] thermal: power_allocator: exit early if there are no cooling devices | Date | Mon, 10 Aug 2015 17:04:52 +0100 |
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Don't waste cycles in the power allocator governor's throttle function if there are no cooling devices and exit early.
This commit doesn't change any functionality, but should provide better performance for the odd case of a thermal zone with trip points but without cooling devices. --- drivers/thermal/power_allocator.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c index cb3183ec364f..58128ce11ec9 100644 --- a/drivers/thermal/power_allocator.c +++ b/drivers/thermal/power_allocator.c @@ -287,6 +287,11 @@ static int allocate_power(struct thermal_zone_device *tz, } } + if (!num_actors) { + ret = -ENODEV; + goto unlock; + } + /* * We need to allocate three arrays of the same size: * req_power, max_power and granted_power. They are going to -- 1.9.1
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