xref: /freebsd/sys/compat/linuxkpi/common/include/linux/lockdep.h (revision 7877fdebeeb35fad1cbbafce22598b1bdf97c786)
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 _LINUX_LOCKDEP_H_
33 #define	_LINUX_LOCKDEP_H_
34 
35 #include <sys/lock.h>
36 
37 struct lock_class_key {
38 };
39 
40 #define	lockdep_set_class(lock, key)
41 #define	lockdep_set_subclass(lock, sub)
42 #define	lockdep_set_class_and_name(lock, key, name)
43 #define	lockdep_set_current_reclaim_state(g) do { } while (0)
44 #define	lockdep_clear_current_reclaim_state() do { } while (0)
45 
46 #ifdef INVARIANTS
47 #define	lockdep_assert_held(m) do {					\
48 	struct lock_object *__lock = (struct lock_object *)(m);		\
49 	LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED);		\
50 } while (0)
51 
52 #define	lockdep_assert_held_once(m) do {				\
53 	struct lock_object *__lock = (struct lock_object *)(m);		\
54 	LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED | LA_NOTRECURSED); \
55 } while (0)
56 
57 static __inline bool
58 lockdep_is_held(void *__m)
59 {
60 	struct lock_object *__lock;
61 	struct thread *__td;
62 
63 	__lock = __m;
64 	return (LOCK_CLASS(__lock)->lc_owner(__lock, &__td) != 0);
65 }
66 #define	lockdep_is_held_type(_m, _t) lockdep_is_held(_m)
67 
68 #else
69 #define	lockdep_assert_held(m) do { } while (0)
70 
71 #define	lockdep_assert_held_once(m) do { } while (0)
72 
73 #define	lockdep_is_held(m)	1
74 #define	lockdep_is_held_type(_m, _t)	1
75 #endif
76 
77 #define	might_lock(m)	do { } while (0)
78 #define	might_lock_read(m) do { } while (0)
79 
80 #define	lock_acquire(...) do { } while (0)
81 #define	lock_release(...) do { } while (0)
82 #define	lock_acquire_shared_recursive(...) do { } while (0)
83 
84 #define	mutex_acquire(...) do { } while (0)
85 #define	mutex_release(...) do { } while (0)
86 
87 #endif /* _LINUX_LOCKDEP_H_ */
88