[PATCH 4/4] drm/qxl: use iterator instead of dma_resv_shared_list

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I'm not sure why it is useful to know the number of fences
in the reservation object, but we try to avoid exposing the
dma_resv_shared_list() function.

So use the iterator instead. If more information is desired
we could use dma_resv_describe() as well.

Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
 drivers/gpu/drm/qxl/qxl_debugfs.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_debugfs.c b/drivers/gpu/drm/qxl/qxl_debugfs.c
index 1f9a59601bb1..6a36b0fd845c 100644
--- a/drivers/gpu/drm/qxl/qxl_debugfs.c
+++ b/drivers/gpu/drm/qxl/qxl_debugfs.c
@@ -57,13 +57,16 @@ qxl_debugfs_buffers_info(struct seq_file *m, void *data)
 	struct qxl_bo *bo;
 
 	list_for_each_entry(bo, &qdev->gem.objects, list) {
-		struct dma_resv_list *fobj;
-		int rel;
-
-		rcu_read_lock();
-		fobj = dma_resv_shared_list(bo->tbo.base.resv);
-		rel = fobj ? fobj->shared_count : 0;
-		rcu_read_unlock();
+		struct dma_resv_iter cursor;
+		struct dma_fence *fence;
+		int rel = 0;
+
+		dma_resv_iter_begin(&cursor, bo->tbo.base.resv, true);
+		dma_resv_for_each_fence_unlocked(&cursor, fence) {
+			if (dma_resv_iter_is_restarted(&cursor))
+				rel = 0;
+			++rel;
+		}
 
 		seq_printf(m, "size %ld, pc %d, num releases %d\n",
 			   (unsigned long)bo->tbo.base.size,
-- 
2.25.1




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