xref: /freebsd/sys/compat/linuxkpi/common/include/linux/lockdep.h (revision 38a52bd3b5cac3da6f7f6eef3dd050e6aa08ebb3)
1 /*-
2  * Copyright (c) 2010 Isilon Systems, Inc.
3  * Copyright (c) 2010 iX Systems, Inc.
4  * Copyright (c) 2010 Panasas, Inc.
5  * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice unmodified, this list of conditions, and the following
13  *    disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 
32 #ifndef _LINUXKPI_LINUX_LOCKDEP_H_
33 #define	_LINUXKPI_LINUX_LOCKDEP_H_
34 
35 #include <sys/types.h>
36 #include <sys/lock.h>
37 
38 struct lock_class_key {
39 };
40 struct lockdep_map {
41 };
42 struct pin_cookie {
43 };
44 
45 #define	lockdep_set_class(lock, key)
46 #define	lockdep_set_subclass(lock, sub)
47 #define	lockdep_set_class_and_name(lock, key, name)
48 #define	lockdep_set_current_reclaim_state(g) do { } while (0)
49 #define	lockdep_clear_current_reclaim_state() do { } while (0)
50 #define	lockdep_init_map(_map, _name, _key, _x) do { } while(0)
51 #define	lockdep_register_key(key) do { } while(0)
52 #define	lockdep_unregister_key(key) do { } while(0)
53 
54 #ifdef INVARIANTS
55 #define	lockdep_assert_not_held(m) do {					\
56 	struct lock_object *__lock = (struct lock_object *)(m);		\
57 	LOCK_CLASS(__lock)->lc_assert(__lock, LA_UNLOCKED);		\
58 } while (0)
59 
60 #define	lockdep_assert_held(m) do {					\
61 	struct lock_object *__lock = (struct lock_object *)(m);		\
62 	LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED);		\
63 } while (0)
64 
65 #define	lockdep_assert_held_once(m) do {				\
66 	struct lock_object *__lock = (struct lock_object *)(m);		\
67 	LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED | LA_NOTRECURSED); \
68 } while (0)
69 
70 static __inline bool
71 lockdep_is_held(void *__m)
72 {
73 	struct lock_object *__lock;
74 	struct thread *__td;
75 
76 	__lock = __m;
77 	return (LOCK_CLASS(__lock)->lc_owner(__lock, &__td) != 0);
78 }
79 #define	lockdep_is_held_type(_m, _t) lockdep_is_held(_m)
80 
81 #else
82 #define	lockdep_assert_not_held(m) do { (void)(m); } while (0)
83 #define	lockdep_assert_held(m) do { (void)(m); } while (0)
84 
85 #define	lockdep_assert_held_once(m) do { (void)(m); } while (0)
86 
87 #define	lockdep_is_held(m)	1
88 #define	lockdep_is_held_type(_m, _t)	1
89 #endif
90 
91 #define	might_lock(m)	do { } while (0)
92 #define	might_lock_read(m) do { } while (0)
93 #define	might_lock_nested(m, n) do { } while (0)
94 
95 #define	lock_acquire(...) do { } while (0)
96 #define	lock_release(...) do { } while (0)
97 #define	lock_acquire_shared_recursive(...) do { } while (0)
98 
99 #define	mutex_acquire(...) do { } while (0)
100 #define	mutex_release(...) do { } while (0)
101 
102 #define	lock_map_acquire(_map) do { } while (0)
103 #define	lock_map_acquire_read(_map) do { } while (0)
104 #define	lock_map_release(_map) do { } while (0)
105 
106 #define	lockdep_pin_lock(l) ({ struct pin_cookie __pc = { }; __pc; })
107 #define	lockdep_repin_lock(l,c) do { (void)(l); (void)(c); } while (0)
108 #define	lockdep_unpin_lock(l,c) do { (void)(l); (void)(c); } while (0)
109 
110 #endif /* _LINUXKPI_LINUX_LOCKDEP_H_ */
111