From f9caf6cdd5cc1f4006fd7b6b113658c0b0159f23 Mon Sep 17 00:00:00 2001 From: Jesse Zhang Date: Thu, 19 Oct 2023 14:39:48 +0800 Subject: [PATCH] drm/amdkfd:remove unused code Function svm_range_split_by_grinity is not used, so it is removed. Signed-off-by: Jesse Zhang Suggested-by: Philip Yang Reviewed-by: Yifan Zhang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 60 ---------------------------- drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 3 -- 2 files changed, 63 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index eef76190800c6..ad4e1387e0b09 100644 --- 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 be11ba0c4289d..026863a0abcd3 100644 --- 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); -- 2.30.2