diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2155-drm-amdgpu-bypass-lru-touch-for-KIQ-ring-submission.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2155-drm-amdgpu-bypass-lru-touch-for-KIQ-ring-submission.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2155-drm-amdgpu-bypass-lru-touch-for-KIQ-ring-submission.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2155-drm-amdgpu-bypass-lru-touch-for-KIQ-ring-submission.patch new file mode 100644 index 00000000..d18fc47b --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2155-drm-amdgpu-bypass-lru-touch-for-KIQ-ring-submission.patch @@ -0,0 +1,39 @@ +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 + |