source: rtems-libbsd/rtemsbsd/powerpc/include/linux/slab.h @ 9789434

/*-
 * Copyright (c) 2010 Isilon Systems, Inc.
 * Copyright (c) 2010 iX Systems, Inc.
 * Copyright (c) 2010 Panasas, Inc.
 * Copyright (c) 2013, 2014 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 _LINUX_SLAB_H_
#define _LINUX_SLAB_H_

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <vm/uma.h>

#include <linux/types.h>
#include <linux/gfp.h>

MALLOC_DECLARE(M_KMALLOC);

#define kmalloc(size, flags)            malloc((size), M_KMALLOC, (flags))
#define kmalloc_array(size, n, flags)   malloc((size) * (n), M_KMALLOC, (flags))
#define kvmalloc(size)                  kmalloc((size), 0)
#define kzalloc(size, flags)            kmalloc((size), (flags) | M_ZERO)
#define kzalloc_node(size, flags, node) kzalloc(size, flags)
#define kfree(ptr)                      free(__DECONST(void *, (ptr)), M_KMALLOC)
#define krealloc(ptr, size, flags)      realloc((ptr), (size), M_KMALLOC, (flags))
#define kcalloc(n, size, flags)         kmalloc((n) * (size), flags | M_ZERO)
#define vzalloc(size)                   kzalloc(size, GFP_KERNEL | __GFP_NOWARN)
#define vfree(arg)                      kfree(arg)
#define kvfree(arg)                     kfree(arg)
#define vmalloc(size)                   kmalloc(size, GFP_KERNEL)
#define vmalloc_node(size, node)        kmalloc(size, GFP_KERNEL)

struct kmem_cache {
        uma_zone_t      cache_zone;
        void            (*cache_ctor)(void *);
};

#define SLAB_HWCACHE_ALIGN      0x0001

static inline int
kmem_ctor(void *mem, int size, void *arg, int flags)
{
        void (*ctor)(void *);

        ctor = arg;
        ctor(mem);

        return (0);
}

static inline struct kmem_cache *
kmem_cache_create(char *name, size_t size, size_t align, u_long flags,
    void (*ctor)(void *))
{
        struct kmem_cache *c;

        c = malloc(sizeof(*c), M_KMALLOC, M_WAITOK);
        if (align)
                align--;
        if (flags & SLAB_HWCACHE_ALIGN)
                align = UMA_ALIGN_CACHE;
        c->cache_zone = uma_zcreate(name, size, ctor ? kmem_ctor : NULL,
            NULL, NULL, NULL, align, 0);
        c->cache_ctor = ctor;

        return c;
}

static inline void *
kmem_cache_alloc(struct kmem_cache *c, int flags)
{
        return uma_zalloc_arg(c->cache_zone, c->cache_ctor, flags);
}

static inline void
kmem_cache_free(struct kmem_cache *c, void *m)
{
        uma_zfree(c->cache_zone, m);
}

static inline void
kmem_cache_destroy(struct kmem_cache *c)
{
        uma_zdestroy(c->cache_zone);
        free(c, M_KMALLOC);
}

#endif  /* _LINUX_SLAB_H_ */