From: Kees Cook <keescook@chromium.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <keescook@chromium.org>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Roman Gushchin <roman.gushchin@linux.dev>,
Hyeonggon Yoo <42.hyeyoo@gmail.com>,
linux-mm@kvack.org, "GONG, Ruiqi" <gongruiqi@huaweicloud.com>,
Xiu Jianfeng <xiujianfeng@huawei.com>,
Suren Baghdasaryan <surenb@google.com>,
Kent Overstreet <kent.overstreet@linux.dev>,
Jann Horn <jannh@google.com>,
Matteo Rizzo <matteorizzo@google.com>,
Thomas Graf <tgraf@suug.ch>,
Herbert Xu <herbert@gondor.apana.org.au>,
julien.voisin@dustri.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: [PATCH v3 1/6] mm/slab: Introduce kmem_buckets typedef
Date: Wed, 24 Apr 2024 14:40:58 -0700 [thread overview]
Message-ID: <20240424214104.3248214-1-keescook@chromium.org> (raw)
In-Reply-To: <20240424213019.make.366-kees@kernel.org>
Encapsulate the concept of a single set of kmem_caches that are used
for the kmalloc size buckets. Redefine kmalloc_caches as an array
of these buckets (for the different global cache buckets).
Signed-off-by: Kees Cook <keescook@chromium.org>
---
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: linux-mm@kvack.org
---
include/linux/slab.h | 5 +++--
mm/slab_common.c | 3 +--
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 4cc37ef22aae..c8164d5db420 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -426,8 +426,9 @@ enum kmalloc_cache_type {
NR_KMALLOC_TYPES
};
-extern struct kmem_cache *
-kmalloc_caches[NR_KMALLOC_TYPES][KMALLOC_SHIFT_HIGH + 1];
+typedef struct kmem_cache * kmem_buckets[KMALLOC_SHIFT_HIGH + 1];
+
+extern kmem_buckets kmalloc_caches[NR_KMALLOC_TYPES];
/*
* Define gfp bits that should not be set for KMALLOC_NORMAL.
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 8664da88e843..db9e1b15efd5 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -653,8 +653,7 @@ static struct kmem_cache *__init create_kmalloc_cache(const char *name,
return s;
}
-struct kmem_cache *
-kmalloc_caches[NR_KMALLOC_TYPES][KMALLOC_SHIFT_HIGH + 1] __ro_after_init =
+kmem_buckets kmalloc_caches[NR_KMALLOC_TYPES] __ro_after_init =
{ /* initialization for https://llvm.org/pr42570 */ };
EXPORT_SYMBOL(kmalloc_caches);
--
2.34.1
next prev parent reply other threads:[~2024-04-24 21:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 21:40 [PATCH v3 0/6] slab: Introduce dedicated bucket allocator Kees Cook
2024-04-24 21:40 ` Kees Cook [this message]
2024-04-24 21:40 ` [PATCH v3 2/6] mm/slab: Plumb kmem_buckets into __do_kmalloc_node() Kees Cook
2024-04-24 21:41 ` [PATCH v3 3/6] mm/slab: Introduce __kvmalloc_node() that can take kmem_buckets argument Kees Cook
2024-04-24 21:41 ` [PATCH v3 4/6] mm/slab: Introduce kmem_buckets_create() and family Kees Cook
2024-04-24 21:41 ` [PATCH v3 5/6] ipc, msg: Use dedicated slab buckets for alloc_msg() Kees Cook
2024-04-24 21:41 ` [PATCH v3 6/6] mm/util: Use dedicated slab buckets for memdup_user() Kees Cook
2024-04-28 11:02 ` [PATCH v3 0/6] slab: Introduce dedicated bucket allocator jvoisin
2024-04-28 17:02 ` Kees Cook
2024-05-03 13:39 ` jvoisin
2024-05-03 19:06 ` Kees Cook
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