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Commit e3fef09d authored by Jean Delvare's avatar Jean Delvare Committed by Daniel Vetter
Browse files

drm/i915: Optimize DIV_ROUND_CLOSEST call 



DIV_ROUND_CLOSEST is faster if the compiler knows it will only be
dealing with unsigned dividends. This optimization rips 32 bytes of
binary code on x86_64.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent bf6f0368

drivers/gpu/drm/i915/intel_pm.c

+2 −1
Original line number Diff line number Diff line
@@ -2552,7 +2552,8 @@ static void gen6_update_ring_freq(struct drm_device *dev) 
{

	struct drm_i915_private *dev_priv = dev->dev_private;

	int min_freq = 15;

	int gpu_freq, ia_freq, max_ia_freq;

	int gpu_freq;

	unsigned int ia_freq, max_ia_freq;

	int scaling_factor = 180;



	WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));