netdev - [PATCH v9 4/4] lib/ref_tracker: remove warnings in case of allocation failure

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Message-Id: <20230224-track_gt-v9-4-5b47a33f55d1@intel.com>
Date: Fri, 02 Jun 2023 12:21:36 +0200
From: Andrzej Hajda <andrzej.hajda@...el.com>
To: Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 "David S. Miller" <davem@...emloft.net>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>, 
 Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, 
 Rodrigo Vivi <rodrigo.vivi@...el.com>, 
 Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>, 
 linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org, 
 dri-devel@...ts.freedesktop.org, Chris Wilson <chris@...is-wilson.co.uk>, 
 netdev@...r.kernel.org, Dmitry Vyukov <dvyukov@...gle.com>, 
 Andi Shyti <andi.shyti@...ux.intel.com>, 
 Andrzej Hajda <andrzej.hajda@...el.com>
Subject: [PATCH v9 4/4] lib/ref_tracker: remove warnings in case of
 allocation failure

Library can handle allocation failures. To avoid allocation warnings
__GFP_NOWARN has been added everywhere. Moreover GFP_ATOMIC has been
replaced with GFP_NOWAIT in case of stack allocation on tracker free
call.

Signed-off-by: Andrzej Hajda <andrzej.hajda@...el.com>
Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@...gle.com>
---
 lib/ref_tracker.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/ref_tracker.c b/lib/ref_tracker.c
index cce4614b07940f..cf5609b1ca7936 100644
--- a/lib/ref_tracker.c
+++ b/lib/ref_tracker.c
@@ -189,7 +189,7 @@ int ref_tracker_alloc(struct ref_tracker_dir *dir,
 	unsigned long entries[REF_TRACKER_STACK_ENTRIES];
 	struct ref_tracker *tracker;
 	unsigned int nr_entries;
-	gfp_t gfp_mask = gfp;
+	gfp_t gfp_mask = gfp | __GFP_NOWARN;
 	unsigned long flags;

 	WARN_ON_ONCE(dir->dead);
@@ -237,7 +237,8 @@ int ref_tracker_free(struct ref_tracker_dir *dir,
 		return -EEXIST;
 	}
 	nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 1);
-	stack_handle = stack_depot_save(entries, nr_entries, GFP_ATOMIC);
+	stack_handle = stack_depot_save(entries, nr_entries,
+					GFP_NOWAIT | __GFP_NOWARN);

 	spin_lock_irqsave(&dir->lock, flags);
 	if (tracker->dead) {

-- 
2.34.1