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/types.h>
34 #include <sys/lock.h>
35
36 struct lock_class_key {
37 };
38 struct lockdep_map {
39 };
40 struct pin_cookie {
41 };
42
43 #define lockdep_set_class(lock, key)
44 #define lockdep_set_subclass(lock, sub)
45 #define lockdep_set_class_and_name(lock, key, name)
46 #define lockdep_set_current_reclaim_state(g) do { } while (0)
47 #define lockdep_clear_current_reclaim_state() do { } while (0)
48 #define lockdep_init_map(_map, _name, _key, _x) do { } while(0)
49 #define lockdep_register_key(key) do { } while(0)
50 #define lockdep_unregister_key(key) do { } while(0)
51
52 #ifdef INVARIANTS
53 #define lockdep_assert(cond) do { WARN_ON(!(cond)); } while (0)
54 #define lockdep_assert_once(cond) do { WARN_ON_ONCE(!(cond)); } while (0)
55
56 #define lockdep_assert_not_held(m) do { \
57 struct lock_object *__lock = (struct lock_object *)(m); \
58 LOCK_CLASS(__lock)->lc_assert(__lock, LA_UNLOCKED); \
59 } while (0)
60
61 #define lockdep_assert_held(m) do { \
62 struct lock_object *__lock = (struct lock_object *)(m); \
63 LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED); \
64 } while (0)
65
66 #define lockdep_assert_held_once(m) do { \
67 struct lock_object *__lock = (struct lock_object *)(m); \
68 LOCK_CLASS(__lock)->lc_assert(__lock, LA_LOCKED | LA_NOTRECURSED); \
69 } while (0)
70
71 #define lockdep_assert_none_held_once() do { } while (0)
72
73 static __inline bool
lockdep_is_held(void * __m)74 lockdep_is_held(void *__m)
75 {
76 struct lock_object *__lock;
77 struct thread *__td;
78
79 __lock = __m;
80 return (LOCK_CLASS(__lock)->lc_owner(__lock, &__td) != 0);
81 }
82 #define lockdep_is_held_type(_m, _t) lockdep_is_held(_m)
83
84 #else
85 #define lockdep_assert(cond) do { } while (0)
86 #define lockdep_assert_once(cond) do { } while (0)
87
88 #define lockdep_assert_not_held(m) do { (void)(m); } while (0)
89 #define lockdep_assert_held(m) do { (void)(m); } while (0)
90 #define lockdep_assert_none_held_once() do { } while (0)
91
92 #define lockdep_assert_held_once(m) do { (void)(m); } while (0)
93
94 #define lockdep_is_held(m) 1
95 #define lockdep_is_held_type(_m, _t) 1
96 #endif
97
98 #define might_lock(m) do { } while (0)
99 #define might_lock_read(m) do { } while (0)
100 #define might_lock_nested(m, n) do { } while (0)
101
102 #define lock_acquire(...) do { } while (0)
103 #define lock_release(...) do { } while (0)
104 #define lock_acquire_shared_recursive(...) do { } while (0)
105
106 #define mutex_acquire(...) do { } while (0)
107 #define mutex_release(...) do { } while (0)
108
109 #define lock_map_acquire(_map) do { } while (0)
110 #define lock_map_acquire_read(_map) do { } while (0)
111 #define lock_map_release(_map) do { } while (0)
112
113 #define lockdep_pin_lock(l) ({ struct pin_cookie __pc = { }; __pc; })
114 #define lockdep_repin_lock(l,c) do { (void)(l); (void)(c); } while (0)
115 #define lockdep_unpin_lock(l,c) do { (void)(l); (void)(c); } while (0)
116
117 #endif /* _LINUXKPI_LINUX_LOCKDEP_H_ */
118