/*- * Copyright (c) 2010 Isilon Systems, Inc. * Copyright (c) 2010 iX Systems, Inc. * Copyright (c) 2010 Panasas, Inc. * Copyright (c) 2013-2021 Mellanox Technologies, Ltd. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _LINUXKPI_LINUX_SLAB_H_ #define _LINUXKPI_LINUX_SLAB_H_ #include #include #include #include #include #include #include #include MALLOC_DECLARE(M_KMALLOC); #define kvmalloc(size, flags) kmalloc(size, flags) #define kvzalloc(size, flags) kmalloc(size, (flags) | __GFP_ZERO) #define kvcalloc(n, size, flags) kvmalloc_array(n, size, (flags) | __GFP_ZERO) #define kzalloc(size, flags) kmalloc(size, (flags) | __GFP_ZERO) #define kzalloc_node(size, flags, node) kmalloc_node(size, (flags) | __GFP_ZERO, node) #define kfree_const(ptr) kfree(ptr) #define vzalloc(size) __vmalloc(size, GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO, 0) #define vfree(arg) kfree(arg) #define kvfree(arg) kfree(arg) #define vmalloc_node(size, node) __vmalloc_node(size, GFP_KERNEL, node) #define vmalloc_user(size) __vmalloc(size, GFP_KERNEL | __GFP_ZERO, 0) #define vmalloc(size) __vmalloc(size, GFP_KERNEL, 0) #define __kmalloc(...) kmalloc(__VA_ARGS__) /* * Prefix some functions with linux_ to avoid namespace conflict * with the OpenSolaris code in the kernel. */ #define kmem_cache linux_kmem_cache #define kmem_cache_create(...) linux_kmem_cache_create(__VA_ARGS__) #define kmem_cache_alloc(...) lkpi_kmem_cache_alloc(__VA_ARGS__) #define kmem_cache_zalloc(...) lkpi_kmem_cache_zalloc(__VA_ARGS__) #define kmem_cache_free(...) lkpi_kmem_cache_free(__VA_ARGS__) #define kmem_cache_destroy(...) linux_kmem_cache_destroy(__VA_ARGS__) #define KMEM_CACHE(__struct, flags) \ linux_kmem_cache_create(#__struct, sizeof(struct __struct), \ __alignof(struct __struct), (flags), NULL) typedef void linux_kmem_ctor_t (void *); struct linux_kmem_cache; #define SLAB_HWCACHE_ALIGN (1 << 0) #define SLAB_TYPESAFE_BY_RCU (1 << 1) #define SLAB_RECLAIM_ACCOUNT (1 << 2) #define SLAB_DESTROY_BY_RCU \ SLAB_TYPESAFE_BY_RCU #define ARCH_KMALLOC_MINALIGN \ __alignof(unsigned long long) /* drm-kmod 5.4 compat */ #define kfree_async(ptr) kfree(ptr); static inline gfp_t linux_check_m_flags(gfp_t flags) { const gfp_t m = M_NOWAIT | M_WAITOK; /* make sure either M_NOWAIT or M_WAITOK is set */ if ((flags & m) == 0) flags |= M_NOWAIT; else if ((flags & m) == m) flags &= ~M_WAITOK; /* mask away LinuxKPI specific flags */ return (flags & GFP_NATIVE_MASK); } static inline void * kmalloc(size_t size, gfp_t flags) { return (malloc(MAX(size, sizeof(struct llist_node)), M_KMALLOC, linux_check_m_flags(flags))); } static inline void * kmalloc_node(size_t size, gfp_t flags, int node) { return (malloc_domainset(size, M_KMALLOC, linux_get_vm_domain_set(node), linux_check_m_flags(flags))); } static inline void * kcalloc(size_t n, size_t size, gfp_t flags) { flags |= __GFP_ZERO; return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags))); } static inline void * kcalloc_node(size_t n, size_t size, gfp_t flags, int node) { flags |= __GFP_ZERO; return (mallocarray_domainset(n, size, M_KMALLOC, linux_get_vm_domain_set(node), linux_check_m_flags(flags))); } static inline void * __vmalloc(size_t size, gfp_t flags, int other) { return (malloc(size, M_KMALLOC, linux_check_m_flags(flags))); } static inline void * __vmalloc_node(size_t size, gfp_t flags, int node) { return (malloc_domainset(size, M_KMALLOC, linux_get_vm_domain_set(node), linux_check_m_flags(flags))); } static inline void * vmalloc_32(size_t size) { return (contigmalloc(size, M_KMALLOC, M_WAITOK, 0, UINT_MAX, 1, 1)); } static inline void * kmalloc_array(size_t n, size_t size, gfp_t flags) { return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags))); } static inline void * kmalloc_array_node(size_t n, size_t size, gfp_t flags, int node) { return (mallocarray_domainset(n, size, M_KMALLOC, linux_get_vm_domain_set(node), linux_check_m_flags(flags))); } static inline void * kvmalloc_array(size_t n, size_t size, gfp_t flags) { return (mallocarray(n, size, M_KMALLOC, linux_check_m_flags(flags))); } static inline void * krealloc(void *ptr, size_t size, gfp_t flags) { return (realloc(ptr, size, M_KMALLOC, linux_check_m_flags(flags))); } extern void linux_kfree_async(void *); static inline void kfree(const void *ptr) { if (curthread->td_critnest != 0) linux_kfree_async(__DECONST(void *, ptr)); else free(__DECONST(void *, ptr), M_KMALLOC); } static __inline void kfree_sensitive(const void *ptr) { zfree(__DECONST(void *, ptr), M_KMALLOC); } static inline size_t ksize(const void *ptr) { return (malloc_usable_size(ptr)); } extern struct linux_kmem_cache *linux_kmem_cache_create(const char *name, size_t size, size_t align, unsigned flags, linux_kmem_ctor_t *ctor); extern void *lkpi_kmem_cache_alloc(struct linux_kmem_cache *, gfp_t); extern void *lkpi_kmem_cache_zalloc(struct linux_kmem_cache *, gfp_t); extern void lkpi_kmem_cache_free(struct linux_kmem_cache *, void *); extern void linux_kmem_cache_destroy(struct linux_kmem_cache *); #endif /* _LINUXKPI_LINUX_SLAB_H_ */