atomic.h (89eb78d542394a8461164009272ea654357795ad) atomic.h (d0e03218ca3be48c6f7109e4810d58e7b7dd4135)
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Generic C implementation of atomic counter operations. Do not include in
4 * machine independent code.
5 *
6 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
7 * Written by David Howells (dhowells@redhat.com)
8 */

--- 79 unchanged lines hidden (view full) ---

88 v->counter = v->counter c_op i; \
89 raw_local_irq_restore(flags); \
90 \
91 return ret; \
92}
93
94#endif /* CONFIG_SMP */
95
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Generic C implementation of atomic counter operations. Do not include in
4 * machine independent code.
5 *
6 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
7 * Written by David Howells (dhowells@redhat.com)
8 */

--- 79 unchanged lines hidden (view full) ---

88 v->counter = v->counter c_op i; \
89 raw_local_irq_restore(flags); \
90 \
91 return ret; \
92}
93
94#endif /* CONFIG_SMP */
95
96#ifndef atomic_add_return
97ATOMIC_OP_RETURN(add, +)
96ATOMIC_OP_RETURN(add, +)
98#endif
99
100#ifndef atomic_sub_return
101ATOMIC_OP_RETURN(sub, -)
97ATOMIC_OP_RETURN(sub, -)
102#endif
103
98
104#ifndef atomic_fetch_add
105ATOMIC_FETCH_OP(add, +)
99ATOMIC_FETCH_OP(add, +)
106#endif
107
108#ifndef atomic_fetch_sub
109ATOMIC_FETCH_OP(sub, -)
100ATOMIC_FETCH_OP(sub, -)
110#endif
111
112#ifndef atomic_fetch_and
113ATOMIC_FETCH_OP(and, &)
101ATOMIC_FETCH_OP(and, &)
114#endif
115
116#ifndef atomic_fetch_or
117ATOMIC_FETCH_OP(or, |)
102ATOMIC_FETCH_OP(or, |)
118#endif
119
120#ifndef atomic_fetch_xor
121ATOMIC_FETCH_OP(xor, ^)
103ATOMIC_FETCH_OP(xor, ^)
122#endif
123
104
124#ifndef atomic_and
105ATOMIC_OP(add, +)
106ATOMIC_OP(sub, -)
125ATOMIC_OP(and, &)
107ATOMIC_OP(and, &)
126#endif
127
128#ifndef atomic_or
129ATOMIC_OP(or, |)
108ATOMIC_OP(or, |)
130#endif
131
132#ifndef atomic_xor
133ATOMIC_OP(xor, ^)
109ATOMIC_OP(xor, ^)
134#endif
135
136#undef ATOMIC_FETCH_OP
137#undef ATOMIC_OP_RETURN
138#undef ATOMIC_OP
139
110
111#undef ATOMIC_FETCH_OP
112#undef ATOMIC_OP_RETURN
113#undef ATOMIC_OP
114
140#ifndef atomic_read
141#define atomic_read(v) READ_ONCE((v)->counter)
142#endif
115#define atomic_read(v) READ_ONCE((v)->counter)
116#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
143
117
144#define atomic_set(v, i) WRITE_ONCE(((v)->counter), (i))
145
146static inline void atomic_add(int i, atomic_t *v)
147{
148 atomic_add_return(i, v);
149}
150
151static inline void atomic_sub(int i, atomic_t *v)
152{
153 atomic_sub_return(i, v);
154}
155
156#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
157#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
158
159#endif /* __ASM_GENERIC_ATOMIC_H */
118#define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v)))
119#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
120
121#endif /* __ASM_GENERIC_ATOMIC_H */