Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 42311ff9 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/ttm: introduce utility function to free an allocated memory node 



Existing core code/drivers call drm_mm_put_block on ttm_mem_reg.mm_node
directly.  Future patches will modify TTM behaviour in such a way that
ttm_mem_reg.mm_node doesn't necessarily belong to drm_mm.

Reviewed-by: default avatarJerome Glisse <jglisse@redhat.com>
Acked-by: default avatarThomas Hellström <thellstrom@vmware.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent a845fff8

drivers/gpu/drm/nouveau/nouveau_bo.c

+2 −12
Original line number Diff line number Diff line
@@ -693,12 +693,7 @@ nouveau_bo_move_flipd(struct ttm_buffer_object *bo, bool evict, bool intr, 


	ret = ttm_bo_move_ttm(bo, evict, no_wait_reserve, no_wait_gpu, new_mem);

out:

	if (tmp_mem.mm_node) {

		spin_lock(&bo->bdev->glob->lru_lock);

		drm_mm_put_block(tmp_mem.mm_node);

		spin_unlock(&bo->bdev->glob->lru_lock);

	}



	ttm_bo_mem_put(bo, &tmp_mem);

	return ret;

}
@@ -731,12 +726,7 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict, bool intr, 
		goto out;



out:

	if (tmp_mem.mm_node) {

		spin_lock(&bo->bdev->glob->lru_lock);

		drm_mm_put_block(tmp_mem.mm_node);

		spin_unlock(&bo->bdev->glob->lru_lock);

	}



	ttm_bo_mem_put(bo, &tmp_mem);

	return ret;

}

drivers/gpu/drm/radeon/radeon_ttm.c

+2 −16
Original line number Diff line number Diff line
@@ -326,14 +326,7 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo, 
	}

	r = ttm_bo_move_ttm(bo, true, no_wait_reserve, no_wait_gpu, new_mem);

out_cleanup:

	if (tmp_mem.mm_node) {

		struct ttm_bo_global *glob = rdev->mman.bdev.glob;



		spin_lock(&glob->lru_lock);

		drm_mm_put_block(tmp_mem.mm_node);

		spin_unlock(&glob->lru_lock);

		return r;

	}

	ttm_bo_mem_put(bo, &tmp_mem);

	return r;

}
@@ -372,14 +365,7 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo, 
		goto out_cleanup;

	}

out_cleanup:

	if (tmp_mem.mm_node) {

		struct ttm_bo_global *glob = rdev->mman.bdev.glob;



		spin_lock(&glob->lru_lock);

		drm_mm_put_block(tmp_mem.mm_node);

		spin_unlock(&glob->lru_lock);

		return r;

	}

	ttm_bo_mem_put(bo, &tmp_mem);

	return r;

}

drivers/gpu/drm/ttm/ttm_bo.c

+15 −11
Original line number Diff line number Diff line
@@ -475,11 +475,8 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) 
			list_del_init(&bo->ddestroy);

			++put_count;

		}

		if (bo->mem.mm_node) {

			drm_mm_put_block(bo->mem.mm_node);

			bo->mem.mm_node = NULL;

		}

		spin_unlock(&glob->lru_lock);

		ttm_bo_mem_put(bo, &bo->mem);



		atomic_set(&bo->reserved, 0);
@@ -621,7 +618,6 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, 
			bool no_wait_reserve, bool no_wait_gpu)

{

	struct ttm_bo_device *bdev = bo->bdev;

	struct ttm_bo_global *glob = bo->glob;

	struct ttm_mem_reg evict_mem;

	struct ttm_placement placement;

	int ret = 0;
@@ -667,12 +663,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible, 
	if (ret) {

		if (ret != -ERESTARTSYS)

			printk(KERN_ERR TTM_PFX "Buffer eviction failed\n");

		spin_lock(&glob->lru_lock);

		if (evict_mem.mm_node) {

			drm_mm_put_block(evict_mem.mm_node);

			evict_mem.mm_node = NULL;

		}

		spin_unlock(&glob->lru_lock);

		ttm_bo_mem_put(bo, &evict_mem);

		goto out;

	}

	bo->evicted = true;
@@ -769,6 +760,19 @@ static int ttm_bo_man_get_node(struct ttm_buffer_object *bo, 
	return 0;

}



void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem)

{

	struct ttm_bo_global *glob = bo->glob;



	if (mem->mm_node) {

		spin_lock(&glob->lru_lock);

		drm_mm_put_block(mem->mm_node);

		spin_unlock(&glob->lru_lock);

		mem->mm_node = NULL;

	}

}

EXPORT_SYMBOL(ttm_bo_mem_put);



/**

 * Repeatedly evict memory from the LRU for @mem_type until we create enough

 * space, or we've evicted everything and there isn't enough space.

drivers/gpu/drm/ttm/ttm_bo_util.c

+1 −8
Original line number Diff line number Diff line
@@ -39,14 +39,7 @@ 


void ttm_bo_free_old_node(struct ttm_buffer_object *bo)

{

	struct ttm_mem_reg *old_mem = &bo->mem;



	if (old_mem->mm_node) {

		spin_lock(&bo->glob->lru_lock);

		drm_mm_put_block(old_mem->mm_node);

		spin_unlock(&bo->glob->lru_lock);

	}

	old_mem->mm_node = NULL;

	ttm_bo_mem_put(bo, &bo->mem);

}



int ttm_bo_move_ttm(struct ttm_buffer_object *bo,

include/drm/ttm/ttm_bo_driver.h

+4 −0
Original line number Diff line number Diff line
@@ -649,6 +649,10 @@ extern int ttm_bo_mem_space(struct ttm_buffer_object *bo, 
				struct ttm_mem_reg *mem,

				bool interruptible,

				bool no_wait_reserve, bool no_wait_gpu);



extern void ttm_bo_mem_put(struct ttm_buffer_object *bo,

			   struct ttm_mem_reg *mem);



/**

 * ttm_bo_wait_for_cpu

 *