diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index 07342630740e..c178d56361d6 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1855,18 +1855,24 @@ svm_range_add(struct kfd_process *p, uint64_t start, uint64_t size, node = interval_tree_iter_first(&svms->objects, start, last); while (node) { struct interval_tree_node *next; - struct svm_range *old; unsigned long next_start; pr_debug("found overlap node [0x%lx 0x%lx]\n", node->start, node->last); - old = container_of(node, struct svm_range, it_node); + prange = container_of(node, struct svm_range, it_node); next = interval_tree_iter_next(node, start, last); next_start = min(node->last, last) + 1; - if (node->start < start || node->last > last) { - /* node intersects the updated range, clone+split it */ + if (svm_range_is_same_attrs(p, prange, nattr, attrs)) { + /* nothing to do */ + } else if (node->start < start || node->last > last) { + /* node intersects the update range and its attributes + * will change. Clone and split it, apply updates only + * to the overlapping part + */ + struct svm_range *old = prange; + prange = svm_range_clone(old); if (!prange) { r = -ENOMEM; @@ -1875,6 +1881,7 @@ svm_range_add(struct kfd_process *p, uint64_t start, uint64_t size, list_add(&old->remove_list, remove_list); list_add(&prange->insert_list, insert_list); + list_add(&prange->update_list, update_list); if (node->start < start) { pr_debug("change old range start\n"); @@ -1894,16 +1901,12 @@ svm_range_add(struct kfd_process *p, uint64_t start, uint64_t size, /* The node is contained within start..last, * just update it */ - prange = old; - } - - if (!svm_range_is_same_attrs(p, prange, nattr, attrs)) list_add(&prange->update_list, update_list); + } /* insert a new node if needed */ if (node->start > start) { - prange = svm_range_new(prange->svms, start, - node->start - 1); + prange = svm_range_new(svms, start, node->start - 1); if (!prange) { r = -ENOMEM; goto out; |