[RFC PATCH 2/2] drm/amdgpu: enable gfx wave limiting for high priority compute jobs

[Nirmoy Das]

Enable gfx wave limiting for gfx jobs before pushing high priority
compute jobs so that high priority compute jobs gets more resources
to finish early.

Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 024d0a563a65..ee48989dfb4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -195,6 +195,10 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 	if ((ib->flags & AMDGPU_IB_FLAG_EMIT_MEM_SYNC) && ring->funcs->emit_mem_sync)
 		ring->funcs->emit_mem_sync(ring);

+	if (ring->funcs->emit_wave_limit && job &&
+	    job->base.s_priority >= DRM_SCHED_PRIORITY_HIGH)
+		ring->funcs->emit_wave_limit(ring, true);
+
 	if (ring->funcs->insert_start)
 		ring->funcs->insert_start(ring);

@@ -295,6 +299,11 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
 	ring->current_ctx = fence_ctx;
 	if (vm && ring->funcs->emit_switch_buffer)
 		amdgpu_ring_emit_switch_buffer(ring);
+
+	if (ring->funcs->emit_wave_limit && job &&
+	    job->base.s_priority >= DRM_SCHED_PRIORITY_HIGH)
+		ring->funcs->emit_wave_limit(ring, false);
+
 	amdgpu_ring_commit(ring);
 	return 0;
 }
--
2.30.0