1 /* $NetBSD: mm.h,v 1.4 2021/12/19 12:22:28 riastradh Exp $ */
2
3 /*-
4 * Copyright (c) 2021 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef _LINUX_SCHED_MM_H_
30 #define _LINUX_SCHED_MM_H_
31
32 #include <sys/types.h>
33
34 #include <uvm/uvm_extern.h>
35
36 #include <linux/gfp.h>
37
38 static inline void
mmgrab(struct vmspace * vm)39 mmgrab(struct vmspace *vm)
40 {
41 uvmspace_addref(vm);
42 }
43
44 static inline void
mmdrop(struct vmspace * vm)45 mmdrop(struct vmspace *vm)
46 {
47 uvmspace_free(vm);
48 }
49
50 static inline void
fs_reclaim_acquire(gfp_t gfp)51 fs_reclaim_acquire(gfp_t gfp)
52 {
53 }
54
55 static inline void
fs_reclaim_release(gfp_t gfp)56 fs_reclaim_release(gfp_t gfp)
57 {
58 }
59
60 static inline unsigned
memalloc_nofs_save(void)61 memalloc_nofs_save(void)
62 {
63 return 0xeb13162c;
64 }
65
66 static inline void
memalloc_nofs_restore(unsigned flags)67 memalloc_nofs_restore(unsigned flags)
68 {
69
70 KASSERT(flags == 0xeb13162c);
71 }
72
73 #endif /* _LINUX_SCHED_MM_H_ */
74