[PATCH 2/7] drm/ttm: remove ttm_lru_walk_ops

Christian König ckoenig.leichtzumerken at gmail.com
Wed Jul 16 16:04:21 UTC 2025


It's just another layer of indirection.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c      | 12 ++---------
 drivers/gpu/drm/ttm/ttm_bo_util.c |  2 +-
 include/drm/ttm/ttm_bo.h          | 34 +++++++++++++------------------
 3 files changed, 17 insertions(+), 31 deletions(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index d456be1d6e1e..ea963dc43b62 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -554,10 +554,6 @@ static s64 ttm_bo_evict_cb(struct ttm_lru_walk *walk, struct ttm_buffer_object *
 	return lret;
 }
 
-static const struct ttm_lru_walk_ops ttm_evict_walk_ops = {
-	.process_bo = ttm_bo_evict_cb,
-};
-
 static int ttm_bo_evict_alloc(struct ttm_device *bdev,
 			      struct ttm_resource_manager *man,
 			      const struct ttm_place *place,
@@ -569,7 +565,7 @@ static int ttm_bo_evict_alloc(struct ttm_device *bdev,
 {
 	struct ttm_bo_evict_walk evict_walk = {
 		.walk = {
-			.ops = &ttm_evict_walk_ops,
+			.process_bo = ttm_bo_evict_cb,
 			.arg = {
 				.ctx = ctx,
 				.ticket = ticket,
@@ -1197,10 +1193,6 @@ ttm_bo_swapout_cb(struct ttm_lru_walk *walk, struct ttm_buffer_object *bo)
 	return ret;
 }
 
-const struct ttm_lru_walk_ops ttm_swap_ops = {
-	.process_bo = ttm_bo_swapout_cb,
-};
-
 /**
  * ttm_bo_swapout() - Swap out buffer objects on the LRU list to shmem.
  * @bdev: The ttm device.
@@ -1219,7 +1211,7 @@ s64 ttm_bo_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx,
 {
 	struct ttm_bo_swapout_walk swapout_walk = {
 		.walk = {
-			.ops = &ttm_swap_ops,
+			.process_bo = ttm_bo_swapout_cb,
 			.arg = {
 				.ctx = ctx,
 				.trylock_only = true,
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
index ef1e42e005af..dec60a41185d 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_util.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
@@ -888,7 +888,7 @@ s64 ttm_lru_walk_for_evict(struct ttm_lru_walk *walk, struct ttm_device *bdev,
 	s64 lret;
 
 	ttm_bo_lru_for_each_reserved_guarded(&cursor, man, &walk->arg, bo) {
-		lret = walk->ops->process_bo(walk, bo);
+		lret = walk->process_bo(walk, bo);
 		if (lret == -EBUSY || lret == -EALREADY)
 			lret = 0;
 		progress = (lret < 0) ? lret : progress + lret;
diff --git a/include/drm/ttm/ttm_bo.h b/include/drm/ttm/ttm_bo.h
index 5a16d304a849..63331a4b37f9 100644
--- a/include/drm/ttm/ttm_bo.h
+++ b/include/drm/ttm/ttm_bo.h
@@ -179,24 +179,6 @@ struct ttm_operation_ctx {
 	uint64_t bytes_moved;
 };
 
-struct ttm_lru_walk;
-
-/** struct ttm_lru_walk_ops - Operations for a LRU walk. */
-struct ttm_lru_walk_ops {
-	/**
-	 * process_bo - Process this bo.
-	 * @walk: struct ttm_lru_walk describing the walk.
-	 * @bo: A locked and referenced buffer object.
-	 *
-	 * Return: Negative error code on error, User-defined positive value
-	 * (typically, but not always, size of the processed bo) on success.
-	 * On success, the returned values are summed by the walk and the
-	 * walk exits when its target is met.
-	 * 0 also indicates success, -EBUSY means this bo was skipped.
-	 */
-	s64 (*process_bo)(struct ttm_lru_walk *walk, struct ttm_buffer_object *bo);
-};
-
 /**
  * struct ttm_lru_walk_arg - Common part for the variants of BO LRU walk.
  */
@@ -213,8 +195,20 @@ struct ttm_lru_walk_arg {
  * struct ttm_lru_walk - Structure describing a LRU walk.
  */
 struct ttm_lru_walk {
-	/** @ops: Pointer to the ops structure. */
-	const struct ttm_lru_walk_ops *ops;
+	/**
+	 * process_bo - Process this bo.
+	 * @walk: struct ttm_lru_walk describing the walk.
+	 * @bo: A locked and referenced buffer object.
+	 *
+	 * Return: Negative error code on error, User-defined positive value
+	 * (typically, but not always, size of the processed bo) on success.
+	 * On success, the returned values are summed by the walk and the
+	 * walk exits when its target is met.
+	 * 0 also indicates success, -EBUSY means this bo was skipped.
+	 */
+	s64 (*process_bo)(struct ttm_lru_walk *walk,
+			  struct ttm_buffer_object *bo);
+
 	/** @arg: Common bo LRU walk arguments. */
 	struct ttm_lru_walk_arg arg;
 };
-- 
2.43.0



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