From: Chris Wilson Date: Wed, 4 Aug 2010 14:18:12 +0000 (+0100) Subject: drm/i915: Unroll wrapping of the ringbuffer. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1741dd4aa7552055659bf74ab829a21579407f10;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git drm/i915: Unroll wrapping of the ringbuffer. The tail is quadword aligned, so we can add two MI_NOOP as a time. Signed-off-by: Chris Wilson Signed-off-by: Eric Anholt --- diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 26362f8495a..df8302a11eb 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -682,9 +682,11 @@ int intel_wrap_ring_buffer(struct drm_device *dev, } virt = (unsigned int *)(ring->virtual_start + ring->tail); - rem /= 4; - while (rem--) + rem /= 8; + while (rem--) { *virt++ = MI_NOOP; + *virt++ = MI_NOOP; + } ring->tail = 0; ring->space = ring->head - 8;