[PATCH 61/87] no-write-flush
Chris Wilson
chris at chris-wilson.co.uk
Sat Mar 24 11:41:37 UTC 2018
---
drivers/gpu/drm/i915/intel_ringbuffer.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 90bf4195b08d..8965267651de 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -75,6 +75,8 @@ gen2_render_ring_flush(struct i915_request *rq, u32 mode)
if (mode & EMIT_INVALIDATE)
cmd |= MI_READ_FLUSH;
+ if (!(mode & EMIT_FLUSH))
+ cmd |= MI_NO_WRITE_FLUSH;
cs = intel_ring_begin(rq, 2);
if (IS_ERR(cs))
@@ -126,6 +128,8 @@ gen4_render_ring_flush(struct i915_request *rq, u32 mode)
if (IS_G4X(rq->i915) || IS_GEN5(rq->i915))
cmd |= MI_INVALIDATE_ISP;
}
+ if (!(mode & EMIT_FLUSH))
+ cmd |= MI_NO_WRITE_FLUSH;
cs = intel_ring_begin(rq, 2);
if (IS_ERR(cs))
--
2.16.3
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