1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see [sun.com URL with a
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * libcfs/include/libcfs/winnt/winnt-mem.h
38 * Basic library routines of memory manipulation routines.
41 #ifndef __LIBCFS_WINNT_CFS_MEM_H__
42 #define __LIBCFS_WINNT_CFS_MEM_H__
44 #ifndef __LIBCFS_LIBCFS_H__
45 #error Do not #include this file directly. #include <libcfs/libcfs.h> instead
50 #define CFS_PAGE_SIZE PAGE_SIZE
51 #define CFS_PAGE_SHIFT PAGE_SHIFT
52 #define CFS_PAGE_MASK (~(PAGE_SIZE - 1))
54 typedef struct cfs_page {
60 cfs_page_t *cfs_alloc_page(int flags);
61 void cfs_free_page(cfs_page_t *pg);
63 static inline void *cfs_page_address(cfs_page_t *page)
68 static inline void *cfs_kmap(cfs_page_t *page)
73 static inline void cfs_kunmap(cfs_page_t *page)
78 static inline void cfs_get_page(cfs_page_t *page)
80 atomic_inc(&page->count);
83 static inline void cfs_put_page(cfs_page_t *page)
85 atomic_dec(&page->count);
88 static inline int cfs_page_count(cfs_page_t *page)
90 return atomic_read(&page->count);
97 #define CFS_ALLOC_ATOMIC_TRY (0)
99 extern void *cfs_alloc(size_t nr_bytes, u_int32_t flags);
100 extern void cfs_free(void *addr);
102 extern void *cfs_alloc_large(size_t nr_bytes);
103 extern void cfs_free_large(void *addr);
109 #define SLAB_HWCACHE_ALIGN 0
111 /* The cache name is limited to 20 chars */
113 typedef struct cfs_mem_cache {
117 NPAGED_LOOKASIDE_LIST npll;
122 extern cfs_mem_cache_t * cfs_mem_cache_create (const char *, size_t, size_t, ulong_ptr);
123 extern int cfs_mem_cache_destroy ( cfs_mem_cache_t * );
124 extern void *cfs_mem_cache_alloc ( cfs_mem_cache_t *, int);
125 extern void cfs_mem_cache_free ( cfs_mem_cache_t *, void *);
129 * Page allocator slabs
132 extern cfs_mem_cache_t *cfs_page_t_slab;
133 extern cfs_mem_cache_t *cfs_page_p_slab;
136 #define CFS_DECL_MMSPACE
137 #define CFS_MMSPACE_OPEN do {} while(0)
138 #define CFS_MMSPACE_CLOSE do {} while(0)
141 #define mb() do {} while(0)
149 #endif /* __WINNT_CFS_MEM_H__ */