[PATCH 3/4] drm/amdgpu: report preemption fence via amdgpu_fence_info

[Pixel Ding]

From: pding <Pixel.Ding at amd.com>

Only report fence for GFX ring. This can help checking MCBP feature.

Signed-off-by: pding <Pixel.Ding at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 09d5a5c..2044758 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -645,6 +645,13 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
 			   atomic_read(&ring->fence_drv.last_seq));
 		seq_printf(m, "Last emitted        0x%08x\n",
 			   ring->fence_drv.sync_seq);
+
+		if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)
+			break;
+
+		seq_printf(m, "Last preempted      0x%08x\n",
+			   le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));
+
 	}
 	return 0;
 }
-- 
2.9.5