mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
drm/amdgpu: add invalidate_page callback for userptrs
Otherwise we can run into problems with the writeback code. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
parent
0d2b42b0bd
commit
ae20f12d2d
@ -105,6 +105,76 @@ static void amdgpu_mn_release(struct mmu_notifier *mn,
|
||||
schedule_work(&rmn->work);
|
||||
}
|
||||
|
||||
/**
|
||||
* amdgpu_mn_invalidate_node - unmap all BOs of a node
|
||||
*
|
||||
* @node: the node with the BOs to unmap
|
||||
*
|
||||
* We block for all BOs and unmap them by move them
|
||||
* into system domain again.
|
||||
*/
|
||||
static void amdgpu_mn_invalidate_node(struct amdgpu_mn_node *node,
|
||||
unsigned long start,
|
||||
unsigned long end)
|
||||
{
|
||||
struct amdgpu_bo *bo;
|
||||
long r;
|
||||
|
||||
list_for_each_entry(bo, &node->bos, mn_list) {
|
||||
|
||||
if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, end))
|
||||
continue;
|
||||
|
||||
r = amdgpu_bo_reserve(bo, true);
|
||||
if (r) {
|
||||
DRM_ERROR("(%ld) failed to reserve user bo\n", r);
|
||||
continue;
|
||||
}
|
||||
|
||||
r = reservation_object_wait_timeout_rcu(bo->tbo.resv,
|
||||
true, false, MAX_SCHEDULE_TIMEOUT);
|
||||
if (r <= 0)
|
||||
DRM_ERROR("(%ld) failed to wait for user bo\n", r);
|
||||
|
||||
amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU);
|
||||
r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
|
||||
if (r)
|
||||
DRM_ERROR("(%ld) failed to validate user bo\n", r);
|
||||
|
||||
amdgpu_bo_unreserve(bo);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* amdgpu_mn_invalidate_page - callback to notify about mm change
|
||||
*
|
||||
* @mn: our notifier
|
||||
* @mn: the mm this callback is about
|
||||
* @address: address of invalidate page
|
||||
*
|
||||
* Invalidation of a single page. Blocks for all BOs mapping it
|
||||
* and unmap them by move them into system domain again.
|
||||
*/
|
||||
static void amdgpu_mn_invalidate_page(struct mmu_notifier *mn,
|
||||
struct mm_struct *mm,
|
||||
unsigned long address)
|
||||
{
|
||||
struct amdgpu_mn *rmn = container_of(mn, struct amdgpu_mn, mn);
|
||||
struct interval_tree_node *it;
|
||||
|
||||
mutex_lock(&rmn->lock);
|
||||
|
||||
it = interval_tree_iter_first(&rmn->objects, address, address);
|
||||
if (it) {
|
||||
struct amdgpu_mn_node *node;
|
||||
|
||||
node = container_of(it, struct amdgpu_mn_node, it);
|
||||
amdgpu_mn_invalidate_node(node, address, address);
|
||||
}
|
||||
|
||||
mutex_unlock(&rmn->lock);
|
||||
}
|
||||
|
||||
/**
|
||||
* amdgpu_mn_invalidate_range_start - callback to notify about mm change
|
||||
*
|
||||
@ -132,36 +202,11 @@ static void amdgpu_mn_invalidate_range_start(struct mmu_notifier *mn,
|
||||
it = interval_tree_iter_first(&rmn->objects, start, end);
|
||||
while (it) {
|
||||
struct amdgpu_mn_node *node;
|
||||
struct amdgpu_bo *bo;
|
||||
long r;
|
||||
|
||||
node = container_of(it, struct amdgpu_mn_node, it);
|
||||
it = interval_tree_iter_next(it, start, end);
|
||||
|
||||
list_for_each_entry(bo, &node->bos, mn_list) {
|
||||
|
||||
if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start,
|
||||
end))
|
||||
continue;
|
||||
|
||||
r = amdgpu_bo_reserve(bo, true);
|
||||
if (r) {
|
||||
DRM_ERROR("(%ld) failed to reserve user bo\n", r);
|
||||
continue;
|
||||
}
|
||||
|
||||
r = reservation_object_wait_timeout_rcu(bo->tbo.resv,
|
||||
true, false, MAX_SCHEDULE_TIMEOUT);
|
||||
if (r <= 0)
|
||||
DRM_ERROR("(%ld) failed to wait for user bo\n", r);
|
||||
|
||||
amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_CPU);
|
||||
r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
|
||||
if (r)
|
||||
DRM_ERROR("(%ld) failed to validate user bo\n", r);
|
||||
|
||||
amdgpu_bo_unreserve(bo);
|
||||
}
|
||||
amdgpu_mn_invalidate_node(node, start, end);
|
||||
}
|
||||
|
||||
mutex_unlock(&rmn->lock);
|
||||
@ -169,6 +214,7 @@ static void amdgpu_mn_invalidate_range_start(struct mmu_notifier *mn,
|
||||
|
||||
static const struct mmu_notifier_ops amdgpu_mn_ops = {
|
||||
.release = amdgpu_mn_release,
|
||||
.invalidate_page = amdgpu_mn_invalidate_page,
|
||||
.invalidate_range_start = amdgpu_mn_invalidate_range_start,
|
||||
};
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user