7fdce5c42b
conflict with the opensolaris kernel module. This patch solves a problem where the kernel linker will incorrectly resolve opensolaris kmem_xxx() functions as linuxkpi ones, which leads to a panic when these functions are used. Submitted by: gallatin @ Sponsored by: Mellanox Technologies MFC after: 1 week
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_SLAB_H_
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#define _LINUX_SLAB_H_
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <vm/uma.h>
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#include <linux/types.h>
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#include <linux/gfp.h>
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MALLOC_DECLARE(M_KMALLOC);
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#define kmalloc(size, flags) malloc((size), M_KMALLOC, (flags))
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#define kvmalloc(size) kmalloc((size), 0)
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#define kzalloc(size, flags) kmalloc((size), (flags) | M_ZERO)
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#define kzalloc_node(size, flags, node) kzalloc(size, flags)
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#define kfree(ptr) free(__DECONST(void *, (ptr)), M_KMALLOC)
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#define kfree_const(ptr) kfree(ptr)
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#define krealloc(ptr, size, flags) realloc((ptr), (size), M_KMALLOC, (flags))
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#define kcalloc(n, size, flags) kmalloc((n) * (size), flags | M_ZERO)
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#define vzalloc(size) kzalloc(size, GFP_KERNEL | __GFP_NOWARN)
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#define vfree(arg) kfree(arg)
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#define kvfree(arg) kfree(arg)
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#define vmalloc(size) kmalloc(size, GFP_KERNEL)
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#define vmalloc_node(size, node) kmalloc(size, GFP_KERNEL)
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/*
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* Prefix some functions with linux_ to avoid namespace conflict
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* with the OpenSolaris code in the kernel.
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*/
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#define kmem_cache linux_kmem_cache
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#define kmem_cache_create(...) linux_kmem_cache_create(__VA_ARGS__)
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#define kmem_cache_alloc(...) linux_kmem_cache_alloc(__VA_ARGS__)
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#define kmem_cache_free(...) linux_kmem_cache_free(__VA_ARGS__)
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#define kmem_cache_destroy(...) linux_kmem_cache_destroy(__VA_ARGS__)
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struct linux_kmem_cache {
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uma_zone_t cache_zone;
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void (*cache_ctor)(void *);
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};
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#define SLAB_HWCACHE_ALIGN 0x0001
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static inline int
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linux_kmem_ctor(void *mem, int size, void *arg, int flags)
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{
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void (*ctor)(void *);
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ctor = arg;
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ctor(mem);
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return (0);
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}
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static inline struct kmem_cache *
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linux_kmem_cache_create(char *name, size_t size, size_t align, u_long flags,
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void (*ctor)(void *))
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{
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struct kmem_cache *c;
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c = malloc(sizeof(*c), M_KMALLOC, M_WAITOK);
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if (align)
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align--;
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if (flags & SLAB_HWCACHE_ALIGN)
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align = UMA_ALIGN_CACHE;
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c->cache_zone = uma_zcreate(name, size, ctor ? linux_kmem_ctor : NULL,
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NULL, NULL, NULL, align, 0);
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c->cache_ctor = ctor;
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return c;
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}
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static inline void *
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linux_kmem_cache_alloc(struct kmem_cache *c, int flags)
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{
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return uma_zalloc_arg(c->cache_zone, c->cache_ctor, flags);
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}
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static inline void
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linux_kmem_cache_free(struct kmem_cache *c, void *m)
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{
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uma_zfree(c->cache_zone, m);
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}
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static inline void
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linux_kmem_cache_destroy(struct kmem_cache *c)
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{
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uma_zdestroy(c->cache_zone);
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free(c, M_KMALLOC);
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}
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#endif /* _LINUX_SLAB_H_ */
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