4 files changed, 6 insertions, 79 deletions

diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h
index d2277e06316d..54fa457b26ab 100644
--- a/include/drm/ttm/ttm_bo_api.h
+++ b/include/drm/ttm/ttm_bo_api.h
@@ -147,7 +147,6 @@ struct ttm_tt;
  * holds a pointer to a persistent shmem object.
  * @ttm: TTM structure holding system pages.
  * @evicted: Whether the object was evicted without user-space knowing.
- * @cpu_writes: For synchronization. Number of cpu writers.
  * @lru: List head for the lru list.
  * @ddestroy: List head for the delayed destroy list.
  * @swap: List head for swap LRU list.
@@ -199,12 +198,6 @@ struct ttm_buffer_object {
 	bool evicted;
 
 	/**
-	 * Members protected by the bo::reserved lock only when written to.
-	 */
-
-	atomic_t cpu_writers;
-
-	/**
 	 * Members protected by the bdev::lru_lock.
 	 */
 
@@ -368,30 +361,6 @@ int ttm_bo_validate(struct ttm_buffer_object *bo,
 void ttm_bo_put(struct ttm_buffer_object *bo);
 
 /**
- * ttm_bo_add_to_lru
- *
- * @bo: The buffer object.
- *
- * Add this bo to the relevant mem type lru and, if it's backed by
- * system pages (ttms) to the swap list.
- * This function must be called with struct ttm_bo_global::lru_lock held, and
- * is typically called immediately prior to unreserving a bo.
- */
-void ttm_bo_add_to_lru(struct ttm_buffer_object *bo);
-
-/**
- * ttm_bo_del_from_lru
- *
- * @bo: The buffer object.
- *
- * Remove this bo from all lru lists used to lookup and reserve an object.
- * This function must be called with struct ttm_bo_global::lru_lock held,
- * and is usually called just immediately after the bo has been reserved to
- * avoid recursive reservation from lru lists.
- */
-void ttm_bo_del_from_lru(struct ttm_buffer_object *bo);
-
-/**
  * ttm_bo_move_to_lru_tail
  *
  * @bo: The buffer object.
@@ -442,31 +411,6 @@ bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,
 			      const struct ttm_place *place);
 
 /**
- * ttm_bo_synccpu_write_grab
- *
- * @bo: The buffer object:
- * @no_wait: Return immediately if buffer is busy.
- *
- * Synchronizes a buffer object for CPU RW access. This means
- * command submission that affects the buffer will return -EBUSY
- * until ttm_bo_synccpu_write_release is called.
- *
- * Returns
- * -EBUSY if the buffer is busy and no_wait is true.
- * -ERESTARTSYS if interrupted by a signal.
- */
-int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait);
-
-/**
- * ttm_bo_synccpu_write_release:
- *
- * @bo : The buffer object.
- *
- * Releases a synccpu lock.
- */
-void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo);
-
-/**
  * ttm_bo_acc_size
  *
  * @bdev: Pointer to a ttm_bo_device struct.
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 27b9d5be197f..cac7a8a0825a 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -423,7 +423,6 @@ extern struct ttm_bo_global {
 	 */
 
 	struct kobject kobj;
-	struct ttm_mem_global *mem_glob;
 	struct page *dummy_read_page;
 	spinlock_t lru_lock;
 
@@ -467,7 +466,6 @@ struct ttm_bo_device {
 	 * Constant after bo device init / atomic.
 	 */
 	struct list_head device_list;
-	struct ttm_bo_global *glob;
 	struct ttm_bo_driver *driver;
 	struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES];
 
@@ -631,9 +629,6 @@ void ttm_mem_io_free_vm(struct ttm_buffer_object *bo);
 int ttm_mem_io_lock(struct ttm_mem_type_manager *man, bool interruptible);
 void ttm_mem_io_unlock(struct ttm_mem_type_manager *man);
 
-void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo);
-void ttm_bo_add_to_lru(struct ttm_buffer_object *bo);
-
 /**
  * __ttm_bo_reserve:
  *
@@ -727,15 +722,9 @@ static inline int ttm_bo_reserve(struct ttm_buffer_object *bo,
 				 bool interruptible, bool no_wait,
 				 struct ww_acquire_ctx *ticket)
 {
-	int ret;
-
 	WARN_ON(!kref_read(&bo->kref));
 
-	ret = __ttm_bo_reserve(bo, interruptible, no_wait, ticket);
-	if (likely(ret == 0))
-		ttm_bo_del_sub_from_lru(bo);
-
-	return ret;
+	return __ttm_bo_reserve(bo, interruptible, no_wait, ticket);
 }
 
 /**
@@ -762,9 +751,7 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo,
 	else
 		dma_resv_lock_slow(bo->base.resv, ticket);
 
-	if (likely(ret == 0))
-		ttm_bo_del_sub_from_lru(bo);
-	else if (ret == -EINTR)
+	if (ret == -EINTR)
 		ret = -ERESTARTSYS;
 
 	return ret;
@@ -779,12 +766,9 @@ static inline int ttm_bo_reserve_slowpath(struct ttm_buffer_object *bo,
  */
 static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
 {
-	spin_lock(&bo->bdev->glob->lru_lock);
-	if (list_empty(&bo->lru))
-		ttm_bo_add_to_lru(bo);
-	else
-		ttm_bo_move_to_lru_tail(bo, NULL);
-	spin_unlock(&bo->bdev->glob->lru_lock);
+	spin_lock(&ttm_bo_glob.lru_lock);
+	ttm_bo_move_to_lru_tail(bo, NULL);
+	spin_unlock(&ttm_bo_glob.lru_lock);
 	dma_resv_unlock(bo->base.resv);
 }
 
diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 7e46cc678e7e..5a19843bb80d 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -99,7 +99,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
 
 extern int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
 				  struct list_head *list, bool intr,
-				  struct list_head *dups, bool del_lru);
+				  struct list_head *dups);
 
 /**
  * function ttm_eu_fence_buffer_objects.
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index 3ff48a0a2d7b..c78ea99c42cf 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -65,7 +65,6 @@
 struct ttm_mem_zone;
 extern struct ttm_mem_global {
 	struct kobject kobj;
-	struct ttm_bo_global *bo_glob;
 	struct workqueue_struct *swap_queue;
 	struct work_struct work;
 	spinlock_t lock;