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 42 MALLOC_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 53 typedef struct vmem vmem_t; 54 55 extern char *kmem_asprintf(const char *, ...) 56 __attribute__((format(printf, 1, 2))); 57 extern char *kmem_vasprintf(const char *fmt, va_list ap) 58 __attribute__((format(printf, 1, 0))); 59 60 extern int kmem_scnprintf(char *restrict str, size_t size, 61 const char *restrict fmt, ...); 62 63 typedef 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 75 extern uint64_t spl_kmem_cache_inuse(kmem_cache_t *cache); 76 extern uint64_t spl_kmem_cache_entry_size(kmem_cache_t *cache); 77 78 __attribute__((alloc_size(1))) 79 void *zfs_kmem_alloc(size_t size, int kmflags); 80 void zfs_kmem_free(void *buf, size_t size); 81 uint64_t kmem_size(void); 82 kmem_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); 85 void kmem_cache_destroy(kmem_cache_t *cache); 86 void *kmem_cache_alloc(kmem_cache_t *cache, int flags); 87 void kmem_cache_free(kmem_cache_t *cache, void *buf); 88 boolean_t kmem_cache_reap_active(void); 89 void kmem_cache_reap_soon(kmem_cache_t *); 90 void kmem_reap(void); 91 int kmem_debugging(void); 92 void *calloc(size_t n, size_t s); 93 94 95 #define kmem_cache_reap_now kmem_cache_reap_soon 96 #define freemem vm_free_count() 97 #define minfree vm_cnt.v_free_min 98 #define kmem_alloc(size, kmflags) zfs_kmem_alloc((size), (kmflags)) 99 #define kmem_zalloc(size, kmflags) \ 100 zfs_kmem_alloc((size), (kmflags) | M_ZERO) 101 #define kmem_free(buf, size) zfs_kmem_free((buf), (size)) 102 103 #endif /* _KERNEL */ 104 105 #ifdef _STANDALONE 106 /* 107 * At the moment, we just need it for the type. We redirect the alloc/free 108 * routines to the usual Free and Malloc in that environment. 109 */ 110 typedef int kmem_cache_t; 111 #endif /* _STANDALONE */ 112 113 #endif /* _OPENSOLARIS_SYS_KMEM_H_ */ 114