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Commit 97584d18 authored by Javi Merino's avatar Javi Merino Committed by Zhang Rui
Browse files

thermal: power_allocator: exit early if there are no cooling devices 



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.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Reviewed-by: default avatarDaniel Kurtz <djkurtz@chromium.org>
Signed-off-by: default avatarJavi Merino <javi.merino@arm.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent f5cbb182

drivers/thermal/power_allocator.c

+5 −0
Original line number Diff line number Diff line
@@ -346,6 +346,11 @@ static int allocate_power(struct thermal_zone_device *tz, 
		}

	}



	if (!num_actors) {

		ret = -ENODEV;

		goto unlock;

	}



	/*

	 * We need to allocate five arrays of the same size:

	 * req_power, max_power, granted_power, extra_actor_power and