[PATCH] drm/ttm: stop warning on TT shrinker failure

[Deucher, Alexander]

[AMD Official Use Only - Internal Distribution Only]

+ Leo
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Christian König <ckoenig.leichtzumerken at gmail.com>
Sent: Friday, March 19, 2021 10:08 AM
To: Liu, Leo <Leo.Liu at amd.com>; amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>; dri-devel at lists.freedesktop.org <dri-devel at lists.freedesktop.org>
Subject: [PATCH] drm/ttm: stop warning on TT shrinker failure

Don't print a warning when we fail to allocate a page for swapping things out.

Also rely on memalloc_nofs_save/memalloc_nofs_restore instead of GFP_NOFS.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/ttm/ttm_tt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 2f0833c98d2c..86fa3e82dacc 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -369,7 +369,7 @@ static unsigned long ttm_tt_shrinker_scan(struct shrinker *shrink,
         };
         int ret;

-       ret = ttm_bo_swapout(&ctx, GFP_NOFS);
+       ret = ttm_bo_swapout(&ctx, GFP_KERNEL | __GFP_NOWARN);
         return ret < 0 ? SHRINK_EMPTY : ret;
 }

@@ -389,10 +389,13 @@ static unsigned long ttm_tt_shrinker_count(struct shrinker *shrink,
 static int ttm_tt_debugfs_shrink_show(struct seq_file *m, void *data)
 {
         struct shrink_control sc = { .gfp_mask = GFP_KERNEL };
+       unsigned int flags;

         fs_reclaim_acquire(GFP_KERNEL);
+       flags = memalloc_nofs_save();
         seq_printf(m, "%lu/%lu\n", ttm_tt_shrinker_count(&mm_shrinker, &sc),
                    ttm_tt_shrinker_scan(&mm_shrinker, &sc));
+       memalloc_nofs_restore(flags);
         fs_reclaim_release(GFP_KERNEL);

         return 0;
--
2.25.1

_______________________________________________
amd-gfx mailing list
amd-gfx at lists.freedesktop.org
https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=04%7C01%7Calexander.deucher%40amd.com%7C70aef4974dfe465a06a308d8eae08eb3%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637517597539809703%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=kvyinv9FPakf76dvXF0pzfeCpclxAo3L4Ufkf6%2B6%2FCc%3D&reserved=0
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/dri-devel/attachments/20210319/5635986c/attachment.htm>