2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _LINUX_SLAB_H_
32 #define _LINUX_SLAB_H_
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/malloc.h>
37 #include <sys/limits.h>
40 #include <linux/types.h>
41 #include <linux/gfp.h>
43 MALLOC_DECLARE(M_KMALLOC);
45 #define kvmalloc(size) kmalloc(size, 0)
46 #define kzalloc(size, flags) kmalloc(size, (flags) | __GFP_ZERO)
47 #define kzalloc_node(size, flags, node) kmalloc(size, (flags) | __GFP_ZERO)
48 #define kfree_const(ptr) kfree(ptr)
49 #define vzalloc(size) __vmalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, 0)
50 #define vfree(arg) kfree(arg)
51 #define kvfree(arg) kfree(arg)
52 #define vmalloc_node(size, node) __vmalloc(size, GFP_KERNEL, 0)
53 #define vmalloc_user(size) __vmalloc(size, GFP_KERNEL | __GFP_ZERO, 0)
54 #define vmalloc(size) __vmalloc(size, GFP_KERNEL, 0)
55 #define __kmalloc(...) kmalloc(__VA_ARGS__)
56 #define kmalloc_node(chunk, flags, n) kmalloc(chunk, flags)
59 * Prefix some functions with linux_ to avoid namespace conflict
60 * with the OpenSolaris code in the kernel.
62 #define kmem_cache linux_kmem_cache
63 #define kmem_cache_create(...) linux_kmem_cache_create(__VA_ARGS__)
64 #define kmem_cache_alloc(...) linux_kmem_cache_alloc(__VA_ARGS__)
65 #define kmem_cache_free(...) linux_kmem_cache_free(__VA_ARGS__)
66 #define kmem_cache_destroy(...) linux_kmem_cache_destroy(__VA_ARGS__)
68 #define KMEM_CACHE(__struct, flags) \
69 linux_kmem_cache_create(#__struct, sizeof(struct __struct), \
70 __alignof(struct __struct), (flags), NULL)
72 typedef void linux_kmem_ctor_t (void *);
74 struct linux_kmem_cache {
75 uma_zone_t cache_zone;
76 linux_kmem_ctor_t *cache_ctor;
81 #define SLAB_HWCACHE_ALIGN (1 << 0)
82 #define SLAB_TYPESAFE_BY_RCU (1 << 1)
83 #define SLAB_RECLAIM_ACCOUNT (1 << 2)
85 #define SLAB_DESTROY_BY_RCU \
88 #define ARCH_KMALLOC_MINALIGN \
89 __alignof(unsigned long long)
92 linux_check_m_flags(gfp_t flags)
94 const gfp_t m = M_NOWAIT | M_WAITOK;
96 /* make sure either M_NOWAIT or M_WAITOK is set */
99 else if ((flags & m) == m)
102 /* mask away LinuxKPI specific flags */
103 return (flags & GFP_NATIVE_MASK);
107 kmalloc(size_t size, gfp_t flags)
109 return (malloc(size, M_KMALLOC, linux_check_m_flags(flags)));
113 kcalloc(size_t n, size_t size, gfp_t flags)
116 return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags)));
120 __vmalloc(size_t size, gfp_t flags, int other)
122 return (malloc(size, M_KMALLOC, linux_check_m_flags(flags)));
126 vmalloc_32(size_t size)
128 return (contigmalloc(size, M_KMALLOC, M_WAITOK, 0, UINT_MAX, 1, 1));
132 kmalloc_array(size_t n, size_t size, gfp_t flags)
134 return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags)));
138 kvmalloc_array(size_t n, size_t size, gfp_t flags)
140 return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags)));
144 krealloc(void *ptr, size_t size, gfp_t flags)
146 return (realloc(ptr, size, M_KMALLOC, linux_check_m_flags(flags)));
150 kfree(const void *ptr)
152 free(__DECONST(void *, ptr), M_KMALLOC);
155 extern struct linux_kmem_cache *linux_kmem_cache_create(const char *name,
156 size_t size, size_t align, unsigned flags, linux_kmem_ctor_t *ctor);
159 linux_kmem_cache_alloc(struct linux_kmem_cache *c, gfp_t flags)
161 return (uma_zalloc_arg(c->cache_zone, c,
162 linux_check_m_flags(flags)));
166 kmem_cache_zalloc(struct linux_kmem_cache *c, gfp_t flags)
168 return (uma_zalloc_arg(c->cache_zone, c,
169 linux_check_m_flags(flags | M_ZERO)));
172 extern void linux_kmem_cache_free_rcu(struct linux_kmem_cache *, void *);
175 linux_kmem_cache_free(struct linux_kmem_cache *c, void *m)
177 if (unlikely(c->cache_flags & SLAB_TYPESAFE_BY_RCU))
178 linux_kmem_cache_free_rcu(c, m);
180 uma_zfree(c->cache_zone, m);
183 extern void linux_kmem_cache_destroy(struct linux_kmem_cache *);
185 #endif /* _LINUX_SLAB_H_ */