1 #ifndef _LTTNG_WRAPPER_ATOMIC_H
2 #define _LTTNG_WRAPPER_ATOMIC_H
7 * wrapper around linux/atomic.h.
9 * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
11 * This library is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; only
14 * version 2.1 of the License.
16 * This library is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with this library; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <linux/version.h>
27 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
28 #include <linux/atomic.h>
30 #include <asm/atomic.h>
33 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0))
34 static inline void lttng_smp_mb__before_atomic(void)
36 smp_mb__before_atomic();
39 static inline void lttng_smp_mb__after_atomic(void)
41 smp_mb__after_atomic();
43 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
44 static inline void lttng_smp_mb__before_atomic(void)
46 smp_mb__before_atomic_inc();
49 static inline void lttng_smp_mb__after_atomic(void)
51 smp_mb__after_atomic_inc();
53 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
55 #endif /* _LTTNG_WRAPPER_ATOMIC_H */
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