[PATCH] drm/amdkfd: avoid svm dump when dynamic debug disabled

[Alex Sierra <alex.sierra@xxxxxxx>]

svm_range_debug_dump should not be called at all when dynamic debug
is disabled to avoid iterating over SVM lists. This could drop
performance, specially with big number of SVM ranges.

Signed-off-by: Alex Sierra <alex.sierra@xxxxxxx>
Signed-off-by: Philip Yang <Philip.Yang@xxxxxxx>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 479c4f66afa7..4fb427fc5942 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -821,7 +821,7 @@ svm_range_is_same_attrs(struct kfd_process *p, struct svm_range *prange,
  *
  * Context: The caller must hold svms->lock
  */
-static void svm_range_debug_dump(struct svm_range_list *svms)
+static int svm_range_debug_dump(struct svm_range_list *svms)
 {
 	struct interval_tree_node *node;
 	struct svm_range *prange;
@@ -847,6 +847,8 @@ static void svm_range_debug_dump(struct svm_range_list *svms)
 			 prange->actual_loc);
 		node = interval_tree_iter_next(node, 0, ~0ULL);
 	}
+
+	return 0;
 }
 
 static int
@@ -3563,7 +3565,7 @@ svm_range_set_attr(struct kfd_process *p, struct mm_struct *mm,
 			break;
 	}
 
-	svm_range_debug_dump(svms);
+	pr_debug("%d", svm_range_debug_dump(svms));
 
 	mutex_unlock(&svms->lock);
 	mmap_read_unlock(mm);
-- 
2.32.0