1/*
2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _OPENSOLARIS_SYS_KMEM_H_
30#define	_OPENSOLARIS_SYS_KMEM_H_
31
32#ifdef _KERNEL
33#include <sys/param.h>
34#include <sys/malloc.h>
35#include <sys/vmem.h>
36#include <sys/counter.h>
37
38#include <vm/uma.h>
39#include <vm/vm.h>
40#include <vm/vm_extern.h>
41
42MALLOC_DECLARE(M_SOLARIS);
43
44#define	POINTER_IS_VALID(p)	(!((uintptr_t)(p) & 0x3))
45#define	POINTER_INVALIDATE(pp)	(*(pp) = (void *)((uintptr_t)(*(pp)) | 0x1))
46
47#define	KM_SLEEP		M_WAITOK
48#define	KM_PUSHPAGE		M_WAITOK
49#define	KM_NOSLEEP		M_NOWAIT
50#define	KM_NORMALPRI		0
51#define	KMC_NODEBUG		UMA_ZONE_NODUMP
52
53typedef struct vmem vmem_t;
54
55extern char	*kmem_asprintf(const char *, ...)
56    __attribute__((format(printf, 1, 2)));
57extern char *kmem_vasprintf(const char *fmt, va_list ap)
58    __attribute__((format(printf, 1, 0)));
59
60extern int kmem_scnprintf(char *restrict str, size_t size,
61    const char *restrict fmt, ...);
62
63typedef struct kmem_cache {
64	char		kc_name[32];
65#if !defined(KMEM_DEBUG)
66	uma_zone_t	kc_zone;
67#else
68	size_t		kc_size;
69#endif
70	int		(*kc_constructor)(void *, void *, int);
71	void		(*kc_destructor)(void *, void *);
72	void		*kc_private;
73} kmem_cache_t;
74
75extern uint64_t spl_kmem_cache_inuse(kmem_cache_t *cache);
76extern uint64_t spl_kmem_cache_entry_size(kmem_cache_t *cache);
77
78__attribute__((malloc, alloc_size(1)))
79void *zfs_kmem_alloc(size_t size, int kmflags);
80void zfs_kmem_free(void *buf, size_t size);
81uint64_t kmem_size(void);
82kmem_cache_t *kmem_cache_create(const char *name, size_t bufsize, size_t align,
83    int (*constructor)(void *, void *, int), void (*destructor)(void *, void *),
84    void (*reclaim)(void *) __unused, void *private, vmem_t *vmp, int cflags);
85void kmem_cache_destroy(kmem_cache_t *cache);
86__attribute__((malloc))
87void *kmem_cache_alloc(kmem_cache_t *cache, int flags);
88void kmem_cache_free(kmem_cache_t *cache, void *buf);
89boolean_t kmem_cache_reap_active(void);
90void kmem_cache_reap_soon(kmem_cache_t *);
91void kmem_reap(void);
92int kmem_debugging(void);
93void *calloc(size_t n, size_t s);
94
95
96#define	kmem_cache_reap_now kmem_cache_reap_soon
97#define	freemem				vm_free_count()
98#define	minfree				vm_cnt.v_free_min
99#define	kmem_alloc(size, kmflags)	zfs_kmem_alloc((size), (kmflags))
100#define	kmem_zalloc(size, kmflags)				\
101	zfs_kmem_alloc((size), (kmflags) | M_ZERO)
102#define	kmem_free(buf, size)		zfs_kmem_free((buf), (size))
103
104#endif	/* _KERNEL */
105
106#ifdef _STANDALONE
107/*
108 * At the moment, we just need it for the type. We redirect the alloc/free
109 * routines to the usual Free and Malloc in that environment.
110 */
111typedef int kmem_cache_t;
112#endif /* _STANDALONE */
113
114#endif	/* _OPENSOLARIS_SYS_KMEM_H_ */
115