linux-kernel - [PATCH v2 08/21] mm/mempool/dmapool: remove CONFIG_DEBUG

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Message-Id: <20231120-slab-remove-slab-v2-8-9c9c70177183@suse.cz>
Date:   Mon, 20 Nov 2023 19:34:19 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     David Rientjes <rientjes@...gle.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Marco Elver <elver@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Kees Cook <keescook@...omium.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        cgroups@...r.kernel.org, linux-hardening@...r.kernel.org,
        Vlastimil Babka <vbabka@...e.cz>
Subject: [PATCH v2 08/21] mm/mempool/dmapool: remove CONFIG_DEBUG_SLAB
 ifdefs

CONFIG_DEBUG_SLAB is going away with CONFIG_SLAB, so remove dead ifdefs
in mempool and dmapool code.

Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
---
 mm/dmapool.c | 2 +-
 mm/mempool.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/dmapool.c b/mm/dmapool.c
index a151a21e571b..f0bfc6c490f4 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -36,7 +36,7 @@
 #include <linux/types.h>
 #include <linux/wait.h>
 
-#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB_DEBUG_ON)
+#ifdef CONFIG_SLUB_DEBUG_ON
 #define DMAPOOL_DEBUG 1
 #endif
 
diff --git a/mm/mempool.c b/mm/mempool.c
index 734bcf5afbb7..4759be0ff9de 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -20,7 +20,7 @@
 #include <linux/writeback.h>
 #include "slab.h"
 
-#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_SLUB_DEBUG_ON)
+#ifdef CONFIG_SLUB_DEBUG_ON
 static void poison_error(mempool_t *pool, void *element, size_t size,
 			 size_t byte)
 {
@@ -95,14 +95,14 @@ static void poison_element(mempool_t *pool, void *element)
 		kunmap_atomic(addr);
 	}
 }
-#else /* CONFIG_DEBUG_SLAB || CONFIG_SLUB_DEBUG_ON */
+#else /* CONFIG_SLUB_DEBUG_ON */
 static inline void check_element(mempool_t *pool, void *element)
 {
 }
 static inline void poison_element(mempool_t *pool, void *element)
 {
 }
-#endif /* CONFIG_DEBUG_SLAB || CONFIG_SLUB_DEBUG_ON */
+#endif /* CONFIG_SLUB_DEBUG_ON */
 
 static __always_inline void kasan_poison_element(mempool_t *pool, void *element)
 {

-- 
2.42.1