drm/amdkfd:remove unused code

Function svm_range_split_by_grinity is not used,
so it is removed.

Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Suggested-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Yifan Zhang <yifan1.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index eef76190800c60f6af9918279a35d072182406ab..ad4e1387e0b091cc76f6d17bb7cb2d02bbfda800 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1141,66 +1141,6 @@ svm_range_add_child(struct svm_range *prange, struct mm_struct *mm,
        list_add_tail(&pchild->child_list, &prange->child_list);
 }
 
-/**
- * svm_range_split_by_granularity - collect ranges within granularity boundary
- *
- * @p: the process with svms list
- * @mm: mm structure
- * @addr: the vm fault address in pages, to split the prange
- * @parent: parent range if prange is from child list
- * @prange: prange to split
- *
- * Trims @prange to be a single aligned block of prange->granularity if
- * possible. The head and tail are added to the child_list in @parent.
- *
- * Context: caller must hold mmap_read_lock and prange->lock
- *
- * Return:
- * 0 - OK, otherwise error code
- */
-int
-svm_range_split_by_granularity(struct kfd_process *p, struct mm_struct *mm,
-                              unsigned long addr, struct svm_range *parent,
-                              struct svm_range *prange)
-{
-       struct svm_range *head, *tail;
-       unsigned long start, last, size;
-       int r;
-
-       /* Align splited range start and size to granularity size, then a single
-        * PTE will be used for whole range, this reduces the number of PTE
-        * updated and the L1 TLB space used for translation.
-        */
-       size = 1UL << prange->granularity;
-       start = ALIGN_DOWN(addr, size);
-       last = ALIGN(addr + 1, size) - 1;
-
-       pr_debug("svms 0x%p split [0x%lx 0x%lx] to [0x%lx 0x%lx] size 0x%lx\n",
-                prange->svms, prange->start, prange->last, start, last, size);
-
-       if (start > prange->start) {
-               r = svm_range_split(prange, start, prange->last, &head);
-               if (r)
-                       return r;
-               svm_range_add_child(parent, mm, head, SVM_OP_ADD_RANGE);
-       }
-
-       if (last < prange->last) {
-               r = svm_range_split(prange, prange->start, last, &tail);
-               if (r)
-                       return r;
-               svm_range_add_child(parent, mm, tail, SVM_OP_ADD_RANGE);
-       }
-
-       /* xnack on, update mapping on GPUs with ACCESS_IN_PLACE */
-       if (p->xnack_enabled && prange->work_item.op == SVM_OP_ADD_RANGE) {
-               prange->work_item.op = SVM_OP_ADD_RANGE_AND_MAP;
-               pr_debug("change prange 0x%p [0x%lx 0x%lx] op %d\n",
-                        prange, prange->start, prange->last,
-                        SVM_OP_ADD_RANGE_AND_MAP);
-       }
-       return 0;
-}
 static bool
 svm_nodes_in_same_hive(struct kfd_node *node_a, struct kfd_node *node_b)
 {

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
index be11ba0c4289d0ec3c4aae5593480bb875882890..026863a0abcd3e3d62650ca496600b77dc1fde74 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
@@ -172,9 +172,6 @@ struct kfd_node *svm_range_get_node_by_id(struct svm_range *prange,
 int svm_range_vram_node_new(struct kfd_node *node, struct svm_range *prange,
                            bool clear);
 void svm_range_vram_node_free(struct svm_range *prange);
-int svm_range_split_by_granularity(struct kfd_process *p, struct mm_struct *mm,
-                              unsigned long addr, struct svm_range *parent,
-                              struct svm_range *prange);
 int svm_range_restore_pages(struct amdgpu_device *adev, unsigned int pasid,
                            uint32_t vmid, uint32_t node_id, uint64_t addr,
                            bool write_fault);