diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0197-drm-amdgpu-add-CE-preamble-flag-v3.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0197-drm-amdgpu-add-CE-preamble-flag-v3.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0197-drm-amdgpu-add-CE-preamble-flag-v3.patch b/common/recipes-kernel/linux/files/0197-drm-amdgpu-add-CE-preamble-flag-v3.patch new file mode 100644 index 00000000..0875998b --- /dev/null +++ b/common/recipes-kernel/linux/files/0197-drm-amdgpu-add-CE-preamble-flag-v3.patch @@ -0,0 +1,59 @@ +From aa2bdb2476206c7de4473850039daa705230c27b Mon Sep 17 00:00:00 2001 +From: Jammy Zhou <Jammy.Zhou@amd.com> +Date: Mon, 11 May 2015 23:49:34 +0800 +Subject: [PATCH 0197/1050] drm/amdgpu: add CE preamble flag v3 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The CE preamble IB can be dropped for the same context + +v2: use the flags directly +v3: remove 'CE' for potential preamble usage by other rings + +Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com> +Reviewed-by: Christian König <christian.koenig@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 7 +++++++ + drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 7 +++++++ + 2 files changed, 14 insertions(+) + +diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +index 7428c43..cec46eb 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +@@ -2518,6 +2518,13 @@ static void gfx_v7_0_ring_emit_ib(struct amdgpu_ring *ring, + { + u32 header, control = 0; + u32 next_rptr = ring->wptr + 5; ++ ++ /* drop the CE preamble IB for the same context */ ++ if ((ring->type == AMDGPU_RING_TYPE_GFX) && ++ (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) && ++ !ring->need_ctx_switch) ++ return; ++ + if (ring->type == AMDGPU_RING_TYPE_COMPUTE) + control |= INDIRECT_BUFFER_VALID; + +diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +index 48de920..fc8c462 100644 +--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c ++++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +@@ -3647,6 +3647,13 @@ static void gfx_v8_0_ring_emit_ib(struct amdgpu_ring *ring, + { + u32 header, control = 0; + u32 next_rptr = ring->wptr + 5; ++ ++ /* drop the CE preamble IB for the same context */ ++ if ((ring->type == AMDGPU_RING_TYPE_GFX) && ++ (ib->flags & AMDGPU_IB_FLAG_PREAMBLE) && ++ !ring->need_ctx_switch) ++ return; ++ + if (ring->type == AMDGPU_RING_TYPE_COMPUTE) + control |= INDIRECT_BUFFER_VALID; + +-- +1.9.1 + |