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From a410d1c0ee27df87307d1a97637ab504feb8ac4d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Wed, 30 Jan 2019 14:09:29 +0100
Subject: [PATCH 1195/2940] drm/amdgpu: cleanup VM dw estimation a bit
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
No functional change.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 5346c2ef4eb9..7da1fc2d8eca 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1777,13 +1777,12 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
/*
* reserve space for two commands every (1 << BLOCK_SIZE)
* entries or 2k dwords (whatever is smaller)
- *
- * The second command is for the shadow pagetables.
*/
+ ncmds = ((nptes >> min(adev->vm_manager.block_size, 11u)) + 1);
+
+ /* The second command is for the shadow pagetables. */
if (vm->root.base.bo->shadow)
- ncmds = ((nptes >> min(adev->vm_manager.block_size, 11u)) + 1) * 2;
- else
- ncmds = ((nptes >> min(adev->vm_manager.block_size, 11u)) + 1);
+ ncmds *= 2;
/* padding, etc. */
ndw = 64;
@@ -1802,10 +1801,11 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
ndw += ncmds * 10;
/* extra commands for begin/end fragments */
+ ncmds = 2 * adev->vm_manager.fragment_size;
if (vm->root.base.bo->shadow)
- ndw += 2 * 10 * adev->vm_manager.fragment_size * 2;
- else
- ndw += 2 * 10 * adev->vm_manager.fragment_size;
+ ncmds *= 2;
+
+ ndw += 10 * ncmds;
params.func = amdgpu_vm_do_set_ptes;
}
--
2.17.1
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