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| author | Chunming Zhou <david1.zhou@amd.com> | 2018-02-09 10:44:10 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-13 13:35:14 -0500 |
| commit | 1bc3d3cce8c3b44c2b5ac6cee98c830bb40e6b0f (patch) | |
| tree | 007968d3f7aeda3b5be83ced24ce407023728802 /drivers/gpu/drm/radeon/radeon_ttm.c | |
| parent | fd5fd480dd8fe4910546e7b080b3ae345e57fe9f (diff) | |
| download | talos-obmc-linux-1bc3d3cce8c3b44c2b5ac6cee98c830bb40e6b0f.tar.gz talos-obmc-linux-1bc3d3cce8c3b44c2b5ac6cee98c830bb40e6b0f.zip | |
drm/radeon: only enable swiotlb path when need v2
swiotlb expands our card accessing range, but its path always is slower
than ttm pool allocation.
So add condition to use it.
v2: move a bit later
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180209024410.1469-3-david1.zhou@amd.com
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index a0a839bc39bf..c1e3862a48a4 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -756,7 +756,7 @@ static int radeon_ttm_tt_populate(struct ttm_tt *ttm, #endif #ifdef CONFIG_SWIOTLB - if (swiotlb_nr_tbl()) { + if (rdev->need_swiotlb && swiotlb_nr_tbl()) { return ttm_dma_populate(>t->ttm, rdev->dev, ctx); } #endif @@ -788,7 +788,7 @@ static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm) #endif #ifdef CONFIG_SWIOTLB - if (swiotlb_nr_tbl()) { + if (rdev->need_swiotlb && swiotlb_nr_tbl()) { ttm_dma_unpopulate(>t->ttm, rdev->dev); return; } @@ -1155,7 +1155,7 @@ static int radeon_ttm_debugfs_init(struct radeon_device *rdev) count = ARRAY_SIZE(radeon_ttm_debugfs_list); #ifdef CONFIG_SWIOTLB - if (!swiotlb_nr_tbl()) + if (!(rdev->need_swiotlb && swiotlb_nr_tbl())) --count; #endif |
