1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 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. 17 * 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. 28 * 29 * $FreeBSD$ 30 */ 31 #ifndef _LINUX_SLAB_H_ 32 #define _LINUX_SLAB_H_ 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <vm/uma.h> 38 39 #include <linux/types.h> 40 #include <linux/gfp.h> 41 42 MALLOC_DECLARE(M_KMALLOC); 43 44 #define kmalloc(size, flags) malloc((size), M_KMALLOC, (flags)) 45 #define kvmalloc(size) kmalloc((size), 0) 46 #define kzalloc(size, flags) kmalloc((size), M_ZERO | ((flags) ? (flags) : M_NOWAIT)) 47 #define kzalloc_node(size, flags, node) kzalloc(size, flags) 48 #define kfree(ptr) free(__DECONST(void *, (ptr)), M_KMALLOC) 49 #define kfree_const(ptr) kfree(ptr) 50 #define krealloc(ptr, size, flags) realloc((ptr), (size), M_KMALLOC, (flags)) 51 #define kcalloc(n, size, flags) kmalloc((n) * (size), flags | M_ZERO) 52 #define vzalloc(size) kzalloc(size, GFP_KERNEL | __GFP_NOWARN) 53 #define vfree(arg) kfree(arg) 54 #define kvfree(arg) kfree(arg) 55 #define vmalloc(size) kmalloc(size, GFP_KERNEL) 56 #define vmalloc_node(size, node) kmalloc(size, GFP_KERNEL) 57 58 59 /* 60 * Prefix some functions with linux_ to avoid namespace conflict 61 * with the OpenSolaris code in the kernel. 62 */ 63 #define kmem_cache linux_kmem_cache 64 #define kmem_cache_create(...) linux_kmem_cache_create(__VA_ARGS__) 65 #define kmem_cache_alloc(...) linux_kmem_cache_alloc(__VA_ARGS__) 66 #define kmem_cache_free(...) linux_kmem_cache_free(__VA_ARGS__) 67 #define kmem_cache_destroy(...) linux_kmem_cache_destroy(__VA_ARGS__) 68 69 struct linux_kmem_cache { 70 uma_zone_t cache_zone; 71 void (*cache_ctor)(void *); 72 }; 73 74 #define SLAB_HWCACHE_ALIGN 0x0001 75 76 static inline int 77 linux_kmem_ctor(void *mem, int size, void *arg, int flags) 78 { 79 void (*ctor)(void *); 80 81 ctor = arg; 82 ctor(mem); 83 84 return (0); 85 } 86 87 static inline struct kmem_cache * 88 linux_kmem_cache_create(char *name, size_t size, size_t align, u_long flags, 89 void (*ctor)(void *)) 90 { 91 struct kmem_cache *c; 92 93 c = malloc(sizeof(*c), M_KMALLOC, M_WAITOK); 94 if (align) 95 align--; 96 if (flags & SLAB_HWCACHE_ALIGN) 97 align = UMA_ALIGN_CACHE; 98 c->cache_zone = uma_zcreate(name, size, ctor ? linux_kmem_ctor : NULL, 99 NULL, NULL, NULL, align, 0); 100 c->cache_ctor = ctor; 101 102 return c; 103 } 104 105 static inline void * 106 linux_kmem_cache_alloc(struct kmem_cache *c, int flags) 107 { 108 return uma_zalloc_arg(c->cache_zone, c->cache_ctor, flags); 109 } 110 111 static inline void 112 linux_kmem_cache_free(struct kmem_cache *c, void *m) 113 { 114 uma_zfree(c->cache_zone, m); 115 } 116 117 static inline void 118 linux_kmem_cache_destroy(struct kmem_cache *c) 119 { 120 uma_zdestroy(c->cache_zone); 121 free(c, M_KMALLOC); 122 } 123 124 #endif /* _LINUX_SLAB_H_ */ 125