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authorChristian König <christian.koenig@amd.com>2021-11-09 13:08:18 +0300
committerChristian König <christian.koenig@amd.com>2022-04-07 13:53:53 +0300
commit7bc80a5462c37eab58a9ea386064307c0f447fd1 (patch)
tree95efd2cffc143f44d38b99bad639ea5e750c8914 /drivers/gpu/drm/vgem
parent6e87601b7e3e067a6a6c083914e8a109edcded86 (diff)
downloadlinux-7bc80a5462c37eab58a9ea386064307c0f447fd1.tar.xz
dma-buf: add enum dma_resv_usage v4
This change adds the dma_resv_usage enum and allows us to specify why a dma_resv object is queried for its containing fences. Additional to that a dma_resv_usage_rw() helper function is added to aid retrieving the fences for a read or write userspace submission. This is then deployed to the different query functions of the dma_resv object and all of their users. When the write paratermer was previously true we now use DMA_RESV_USAGE_WRITE and DMA_RESV_USAGE_READ otherwise. v2: add KERNEL/OTHER in separate patch v3: some kerneldoc suggestions by Daniel v4: some more kerneldoc suggestions by Daniel, fix missing cases lost in the rebase pointed out by Bas. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220407085946.744568-2-christian.koenig@amd.com
Diffstat (limited to 'drivers/gpu/drm/vgem')
-rw-r--r--drivers/gpu/drm/vgem/vgem_fence.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index 2ddbebca87d9..91fc4940c65a 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -130,6 +130,7 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
struct vgem_file *vfile = file->driver_priv;
struct dma_resv *resv;
struct drm_gem_object *obj;
+ enum dma_resv_usage usage;
struct dma_fence *fence;
int ret;
@@ -151,7 +152,8 @@ int vgem_fence_attach_ioctl(struct drm_device *dev,
/* Check for a conflicting fence */
resv = obj->resv;
- if (!dma_resv_test_signaled(resv, arg->flags & VGEM_FENCE_WRITE)) {
+ usage = dma_resv_usage_rw(arg->flags & VGEM_FENCE_WRITE);
+ if (!dma_resv_test_signaled(resv, usage)) {
ret = -EBUSY;
goto err_fence;
}