Commit b057f37b authored by Christian König's avatar Christian König
Browse files

drm/ttm: re-add debugfs tt_shrink file 



That got lost when we moved back to a static limit.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210409130113.1459-2-christian.koenig@amd.com
parent a28e10ed

drivers/gpu/drm/ttm/ttm_tt.c

+20 −0
Original line number Diff line number Diff line
@@ -389,6 +389,21 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm) 
	ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED;

}



#ifdef CONFIG_DEBUG_FS



/* Test the shrinker functions and dump the result */

static int ttm_tt_debugfs_shrink_show(struct seq_file *m, void *data)

{

	struct ttm_operation_ctx ctx = { false, false };



	seq_printf(m, "%d\n", ttm_global_swapout(&ctx, GFP_KERNEL));

	return 0;

}

DEFINE_SHOW_ATTRIBUTE(ttm_tt_debugfs_shrink);



#endif





/**

 * ttm_tt_mgr_init - register with the MM shrinker

 *
@@ -396,6 +411,11 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm) 
 */

void ttm_tt_mgr_init(unsigned long num_pages, unsigned long num_dma32_pages)

{

#ifdef CONFIG_DEBUG_FS

	debugfs_create_file("tt_shrink", 0400, ttm_debugfs_root, NULL,

			    &ttm_tt_debugfs_shrink_fops);

#endif



	if (!ttm_pages_limit)

		ttm_pages_limit = num_pages;