blob: d18fc47ba3e6731ce2f11dd9f7ec154d1fd0c88c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
From fb3f62235a9efdf800bbaba55ae93e8fc0b34b26 Mon Sep 17 00:00:00 2001
From: Pixel Ding <Pixel.Ding@amd.com>
Date: Wed, 8 Nov 2017 10:20:01 +0800
Subject: [PATCH 2155/4131] drm/amdgpu: bypass lru touch for KIQ ring
submission
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
KIQ ring submission is used for register accessing on SRIOV
VF that could happen both in irq enabled and irq disabled cases.
Inversion lock could happen on adev->ring_lru_list_lock, while
this operation is useless and just adds overhead in this use
case.
Signed-off-by: Pixel Ding <Pixel.Ding@amd.com>
Reviewed-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index e5ece1f..a98fbbb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -136,7 +136,8 @@ void amdgpu_ring_commit(struct amdgpu_ring *ring)
if (ring->funcs->end_use)
ring->funcs->end_use(ring);
- amdgpu_ring_lru_touch(ring->adev, ring);
+ if (ring->funcs->type != AMDGPU_RING_TYPE_KIQ)
+ amdgpu_ring_lru_touch(ring->adev, ring);
}
/**
--
2.7.4
|
