From 2b173d7fc220af2b0aea209568753c6e591b0ca6 Mon Sep 17 00:00:00 2001 From: Felix Kuehling Date: Wed, 14 Apr 2021 02:48:03 -0400 Subject: drm/ttm: Don't count pages in SG BOs against pages_limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Pages in SG BOs were not allocated by TTM. So don't count them against TTM's pages limit. Signed-off-by: Felix Kuehling Reviewed-by: Christian König Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20210414064804.29356-9-Felix.Kuehling@amd.com --- drivers/gpu/drm/ttm/ttm_tt.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 4d8498a3d642..48c407cff112 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -317,9 +317,12 @@ int ttm_tt_populate(struct ttm_device *bdev, if (ttm_tt_is_populated(ttm)) return 0; - atomic_long_add(ttm->num_pages, &ttm_pages_allocated); - if (bdev->pool.use_dma32) - atomic_long_add(ttm->num_pages, &ttm_dma32_pages_allocated); + if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) { + atomic_long_add(ttm->num_pages, &ttm_pages_allocated); + if (bdev->pool.use_dma32) + atomic_long_add(ttm->num_pages, + &ttm_dma32_pages_allocated); + } while (atomic_long_read(&ttm_pages_allocated) > ttm_pages_limit || atomic_long_read(&ttm_dma32_pages_allocated) > @@ -350,9 +353,12 @@ int ttm_tt_populate(struct ttm_device *bdev, return 0; error: - atomic_long_sub(ttm->num_pages, &ttm_pages_allocated); - if (bdev->pool.use_dma32) - atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated); + if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) { + atomic_long_sub(ttm->num_pages, &ttm_pages_allocated); + if (bdev->pool.use_dma32) + atomic_long_sub(ttm->num_pages, + &ttm_dma32_pages_allocated); + } return ret; } EXPORT_SYMBOL(ttm_tt_populate); @@ -382,9 +388,12 @@ void ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm) else ttm_pool_free(&bdev->pool, ttm); - atomic_long_sub(ttm->num_pages, &ttm_pages_allocated); - if (bdev->pool.use_dma32) - atomic_long_sub(ttm->num_pages, &ttm_dma32_pages_allocated); + if (!(ttm->page_flags & TTM_PAGE_FLAG_SG)) { + atomic_long_sub(ttm->num_pages, &ttm_pages_allocated); + if (bdev->pool.use_dma32) + atomic_long_sub(ttm->num_pages, + &ttm_dma32_pages_allocated); + } ttm->page_flags &= ~TTM_PAGE_FLAG_PRIV_POPULATED; } -- cgit v1.2.3