drm/amdgpu: cleanup amdgpu_hmm_range_get_pages

Remove unused parameters and cleanup dead code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c

@@ -158,10 +158,9 @@ void amdgpu_hmm_unregister(struct amdgpu_bo *bo)
 }
 
 int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
-			       struct mm_struct *mm, struct page **pages,
-			       uint64_t start, uint64_t npages,
-			       struct hmm_range **phmm_range, bool readonly,
-			       bool mmap_locked, void *owner)
+			       uint64_t start, uint64_t npages, bool readonly,
+			       void *owner, struct page **pages,
+			       struct hmm_range **phmm_range)
 {
 	struct hmm_range *hmm_range;
 	unsigned long timeout;
@@ -194,14 +193,7 @@ int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
 
 retry:
 	hmm_range->notifier_seq = mmu_interval_read_begin(notifier);
-
-	if (likely(!mmap_locked))
-		mmap_read_lock(mm);
-
 	r = hmm_range_fault(hmm_range);
-
-	if (likely(!mmap_locked))
-		mmap_read_unlock(mm);
 	if (unlikely(r)) {
 		/*
 		 * FIXME: This timeout should encompass the retry from

drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.h

@@ -31,10 +31,9 @@
 #include <linux/interval_tree.h>
 
 int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
-			       struct mm_struct *mm, struct page **pages,
-			       uint64_t start, uint64_t npages,
-			       struct hmm_range **phmm_range, bool readonly,
-			       bool mmap_locked, void *owner);
+			       uint64_t start, uint64_t npages, bool readonly,
+			       void *owner, struct page **pages,
+			       struct hmm_range **phmm_range);
 int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
 
 #if defined(CONFIG_HMM_MIRROR)

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -692,9 +692,8 @@ int amdgpu_ttm_tt_get_user_pages(struct amdgpu_bo *bo, struct page **pages,
 	}
 
 	readonly = amdgpu_ttm_tt_is_readonly(ttm);
-	r = amdgpu_hmm_range_get_pages(&bo->notifier, mm, pages, start,
-				       ttm->num_pages, range, readonly,
-				       true, NULL);
+	r = amdgpu_hmm_range_get_pages(&bo->notifier, start, ttm->num_pages,
+				       readonly, NULL, pages, range);
 out_unlock:
 	mmap_read_unlock(mm);
 	if (r)

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

@@ -1596,9 +1596,9 @@ static int svm_range_validate_and_map(struct mm_struct *mm,
 		next = min(vma->vm_end, end);
 		npages = (next - addr) >> PAGE_SHIFT;
 		WRITE_ONCE(p->svms.faulting_task, current);
-		r = amdgpu_hmm_range_get_pages(&prange->notifier, mm, NULL,
-					       addr, npages, &hmm_range,
-					       readonly, true, owner);
+		r = amdgpu_hmm_range_get_pages(&prange->notifier, addr, npages,
+					       readonly, owner, NULL,
+					       &hmm_range);
 		WRITE_ONCE(p->svms.faulting_task, NULL);
 		if (r) {
 			pr_debug("failed %d to get svm range pages\n", r);