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1 | /* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1) |
2 | * | |
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3 | * wrapper/atomic.h |
4 | * | |
5 | * wrapper around linux/atomic.h. | |
6 | * | |
7 | * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
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8 | */ |
9 | ||
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10 | #ifndef _LTTNG_WRAPPER_ATOMIC_H |
11 | #define _LTTNG_WRAPPER_ATOMIC_H | |
12 | ||
505fb410 | 13 | #include <linux/version.h> |
2a8a8231 | 14 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37)) |
505fb410 | 15 | #include <linux/atomic.h> |
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16 | #else |
17 | #include <asm/atomic.h> | |
18 | #endif | |
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19 | |
20 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) | |
21 | static inline void lttng_smp_mb__before_atomic(void) | |
22 | { | |
23 | smp_mb__before_atomic(); | |
24 | } | |
25 | ||
26 | static inline void lttng_smp_mb__after_atomic(void) | |
27 | { | |
28 | smp_mb__after_atomic(); | |
29 | } | |
30 | #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */ | |
31 | static inline void lttng_smp_mb__before_atomic(void) | |
32 | { | |
33 | smp_mb__before_atomic_inc(); | |
34 | } | |
35 | ||
36 | static inline void lttng_smp_mb__after_atomic(void) | |
37 | { | |
38 | smp_mb__after_atomic_inc(); | |
39 | } | |
40 | #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */ | |
41 | ||
42 | #endif /* _LTTNG_WRAPPER_ATOMIC_H */ |