1 /* 2 * Copyright (c) 2015-2020 François Tigeot <ftigeot@wolfpond.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _LINUX_SLAB_H_ 28 #define _LINUX_SLAB_H_ 29 30 #include <linux/gfp.h> 31 #include <linux/types.h> 32 33 MALLOC_DECLARE(M_DRM); 34 35 #define kzalloc(size, flags) kmalloc(size, M_DRM, flags | M_ZERO) 36 37 #define kfree(ptr) do { \ 38 if (ptr != NULL) \ 39 kfree((void *)ptr, M_DRM); \ 40 } while (0) 41 42 #define kcalloc(n, size, flags) kzalloc((n) * (size), flags) 43 44 static inline void * 45 kmalloc_array(size_t n, size_t size, gfp_t flags) 46 { 47 return kmalloc(n * size, M_DRM, flags); 48 } 49 50 #include <linux/kasan.h> 51 52 struct kmem_cache { 53 unsigned int size; 54 }; 55 56 #define SLAB_HWCACHE_ALIGN 0x01UL 57 #define SLAB_RECLAIM_ACCOUNT 0x02UL 58 #define SLAB_TYPESAFE_BY_RCU 0x04UL 59 60 #define KMEM_CACHE(__struct, flags) \ 61 kmem_cache_create(#__struct, sizeof(struct __struct), \ 62 __alignof(struct __struct), (flags), NULL) 63 64 static inline struct kmem_cache * 65 kmem_cache_create(const char *name, size_t size, size_t align, 66 unsigned long flags, void (*ctor)(void *)) 67 { 68 struct kmem_cache *kc; 69 70 kc = kzalloc(sizeof(struct kmem_cache), flags); 71 kc->size = size; 72 73 return kc; 74 } 75 76 static inline void 77 kmem_cache_destroy(struct kmem_cache *kc) 78 { 79 kfree(kc); 80 } 81 82 static inline void * 83 kmem_cache_alloc(struct kmem_cache *kc, gfp_t flags) 84 { 85 return kmalloc(kc->size, M_DRM, flags); 86 } 87 88 static inline void * 89 kmem_cache_zalloc(struct kmem_cache *kc, gfp_t flags) 90 { 91 return kzalloc(kc->size, flags); 92 } 93 94 static inline void 95 kmem_cache_free(struct kmem_cache *kc, void *ptr) 96 { 97 kfree(ptr); 98 } 99 100 #endif /* _LINUX_SLAB_H_ */ 101