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
30 #ifndef _LINUXKPI_LINUX_LOCKDEP_H_
31 #define _LINUXKPI_LINUX_LOCKDEP_H_
32
33 #include <sys/systm.h>
34 #include <sys/types.h>
35 #include <sys/lock.h>
36
37 struct lock_class_key {
38 };
39 struct lockdep_map {
40 };
41 struct pin_cookie {
42 };
43
44 #define lockdep_set_class(lock, key)
45 #define lockdep_set_subclass(lock, sub)
46 #define lockdep_set_class_and_name(lock, key, name)
47 #define lockdep_set_current_reclaim_state(g) do { } while (0)
48 #define lockdep_clear_current_reclaim_state() do { } while (0)
49 #define lockdep_init_map(_map, _name, _key, _x) do { } while(0)
50 #define lockdep_register_key(key) do { } while(0)
51 #define lockdep_unregister_key(key) do { } while(0)
52
53 #ifdef INVARIANTS
54 #define lockdep_assert(cond) do { WARN_ON(!(cond)); } while (0)
55 #define lockdep_assert_once(cond) do { WARN_ON_ONCE(!(cond)); } while (0)
56
57 #define lockdep_assert_not_held(m) do { \
58 struct lock_object *__lock = (struct lock_object *)(m); \
59 LOCK_CLASS(__lock)->lc_assert(__lock, LA_UNLOCKED); \
60 } while (0)
61
62 #define lockdep_assert_held(m) do { \
63 struct lock_object *__lock = (struct lock_object *)(m); \
64 LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED); \
65 } while (0)
66
67 #define lockdep_assert_held_once(m) do { \
68 struct lock_object *__lock = (struct lock_object *)(m); \
69 LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED | LA_NOTRECURSED); \
70 } while (0)
71
72 #define lockdep_assert_none_held_once() do { } while (0)
73
74 #else
75 #define lockdep_assert(cond) do { } while (0)
76 #define lockdep_assert_once(cond) do { } while (0)
77
78 #define lockdep_assert_not_held(m) do { (void)(m); } while (0)
79 #define lockdep_assert_held(m) do { (void)(m); } while (0)
80 #define lockdep_assert_none_held_once() do { } while (0)
81
82 #define lockdep_assert_held_once(m) do { (void)(m); } while (0)
83
84 #endif
85
86 static __inline bool
lockdep_is_held(void * __m __diagused)87 lockdep_is_held(void *__m __diagused)
88 {
89 #ifdef INVARIANTS
90 struct lock_object *__lock;
91 struct thread *__td;
92
93 __lock = __m;
94 return (LOCK_CLASS(__lock)->lc_owner(__lock, &__td) != 0);
95 #else
96 return (true);
97 #endif
98 }
99 #define lockdep_is_held_type(_m, _t) lockdep_is_held(_m)
100
101 #define might_lock(m) do { } while (0)
102 #define might_lock_read(m) do { } while (0)
103 #define might_lock_nested(m, n) do { } while (0)
104
105 #define lock_acquire(...) do { } while (0)
106 #define lock_release(...) do { } while (0)
107 #define lock_acquire_shared_recursive(...) do { } while (0)
108
109 #define mutex_acquire(...) do { } while (0)
110 #define mutex_release(...) do { } while (0)
111
112 #define lock_map_acquire(_map) do { } while (0)
113 #define lock_map_acquire_read(_map) do { } while (0)
114 #define lock_map_release(_map) do { } while (0)
115
116 #define lockdep_pin_lock(l) ({ struct pin_cookie __pc = { }; __pc; })
117 #define lockdep_repin_lock(l,c) do { (void)(l); (void)(c); } while (0)
118 #define lockdep_unpin_lock(l,c) do { (void)(l); (void)(c); } while (0)
119
120 #endif /* _LINUXKPI_LINUX_LOCKDEP_H_ */
121