From: Feng Tang <feng.tang@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: linux-mm@kvack.org, kasan-dev@googlegroups.com,
linux-kernel@vger.kernel.org, Feng Tang <feng.tang@intel.com>
Subject: [PATCH -next 1/2] mm/slab: add is_kmalloc_cache() helper macro
Date: Mon, 21 Nov 2022 21:50:23 +0800 [thread overview]
Message-ID: <20221121135024.1655240-1-feng.tang@intel.com> (raw)
commit 6edf2576a6cc ("mm/slub: enable debugging memory wasting of
kmalloc") introduces 'SLAB_KMALLOC' bit specifying whether a
kmem_cache is a kmalloc cache for slab/slub (slob doesn't have
dedicated kmalloc caches).
Add a helper macro for other components like kasan to simplify code.
Signed-off-by: Feng Tang <feng.tang@intel.com>
---
include/linux/slab.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 1c670c16c737..ee6499088ad3 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -758,6 +758,12 @@ extern void kvfree_sensitive(const void *addr, size_t len);
unsigned int kmem_cache_size(struct kmem_cache *s);
+#ifndef CONFIG_SLOB
+#define is_kmalloc_cache(s) ((s)->flags & SLAB_KMALLOC)
+#else
+#define is_kmalloc_cache(s) (false)
+#endif
+
/**
* kmalloc_size_roundup - Report allocation bucket size for the given size
*
--
2.34.1
next reply other threads:[~2022-11-21 13:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 13:50 Feng Tang [this message]
2022-11-21 13:50 ` [PATCH -next 2/2] mm/kasan: simplify is_kmalloc check Feng Tang
2022-11-21 14:13 ` Feng Tang
2022-11-21 15:15 ` Andrey Konovalov
2022-11-22 6:53 ` Feng Tang
2022-11-22 9:57 ` Andrey Konovalov
2022-11-21 20:19 ` [PATCH -next 1/2] mm/slab: add is_kmalloc_cache() helper macro Andrew Morton
2022-11-22 5:30 ` Feng Tang
2022-11-22 23:17 ` Andrew Morton
2022-11-23 9:21 ` Vlastimil Babka
2022-11-23 12:17 ` Feng Tang
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