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From 8b19f64b4d037227ff39c3f5aa0476f533adb8aa Mon Sep 17 00:00:00 2001
From: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Date: Wed, 3 Oct 2018 20:45:11 +0530
Subject: [PATCH 0477/2940] drm/amdgpu: skip IB tests for KIQ in general
[Why]
1. We never submit IBs to KIQ.
2. Ring test pass without KIQ's ring also.
3. By skipping we see an improvement of around 500ms
in the amdgpu's resume time.
[How]
skip IB tests for KIQ ring type.
Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 29ce4264c1ea..f92bb432e17d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -362,6 +362,14 @@ int amdgpu_ib_ring_tests(struct amdgpu_device *adev)
if (!ring || !ring->ready)
continue;
+ /* skip IB tests for KIQ in general for the below reasons:
+ * 1. We never submit IBs to the KIQ
+ * 2. KIQ doesn't use the EOP interrupts,
+ * we use some other CP interrupt.
+ */
+ if (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
+ continue;
+
/* MM engine need more time */
if (ring->funcs->type == AMDGPU_RING_TYPE_UVD ||
ring->funcs->type == AMDGPU_RING_TYPE_VCE ||
--
2.17.1
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