[RFC 12/29] drm/xe/vm: Add debug prints for SVM range prefetch

[Himal Prasad Ghimiray]

Introduce debug logs for the prefetch operation of SVM ranges.

Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 360be74b2a28..f63dd4eb1ae8 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -2369,6 +2369,7 @@ vm_bind_ioctl_ops_create(struct xe_vm *vm, struct xe_vma_ops *vops,
 			xa_store(&op->prefetch_range.range, i, svm_range, GFP_KERNEL);
 			op->prefetch_range.ranges_count++;
 			vops->flags |= XE_VMA_OPS_HAS_SVM_PREFETCH;
+			xe_svm_range_debug(svm_range, "PREFETCH - RANGE CREATED");
 
 			if (range_end > xe_svm_range_end(svm_range) &&
 			    xe_svm_range_end(svm_range) < xe_vma_end(vma)) {
@@ -2866,6 +2867,7 @@ static int prefetch_ranges_lock_and_prep(struct xe_vm *vm,
 						vm->usm.asid, (u64)&vm->svm.gpusvm, ERR_PTR(err));
 					return -ENODATA;
 				}
+				xe_svm_range_debug(svm_range, "PREFETCH - RANGE MIGRATED TO VRAM");
 			}
 
 			err = xe_svm_range_get_pages(vm, svm_range, &ctx);
@@ -2877,6 +2879,7 @@ static int prefetch_ranges_lock_and_prep(struct xe_vm *vm,
 					vm->usm.asid, (u64)&vm->svm.gpusvm, ERR_PTR(err));
 				return err;
 			}
+			xe_svm_range_debug(svm_range, "PREFETCH - RANGE GET PAGES DONE");
 		}
 	}
 	return err;
-- 
2.34.1