That got lost when we moved back to a static limit.
Signed-off-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/ttm/ttm_tt.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 7d479095dcf8..4d8498a3d642 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -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;