X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=wrapper%2Fatomic.h;fp=wrapper%2Fatomic.h;h=6a3cd076b28bb05e7695bb9aef1c205c387cdda3;hb=505fb41059f97c7c4ee456bafabcb6528df8ebe2;hp=0000000000000000000000000000000000000000;hpb=a5c47aa6bbdbe53efb15afb608173193cffcab3d;p=lttng-modules.git

diff --git a/wrapper/atomic.h b/wrapper/atomic.h
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--- /dev/null
+++ b/wrapper/atomic.h
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+#ifndef _LTTNG_WRAPPER_ATOMIC_H
+#define _LTTNG_WRAPPER_ATOMIC_H
+
+/*
+ * wrapper/atomic.h
+ *
+ * wrapper around linux/atomic.h.
+ *
+ * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/version.h>
+#include <linux/atomic.h>
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0))
+static inline void lttng_smp_mb__before_atomic(void)
+{
+	smp_mb__before_atomic();
+}
+
+static inline void lttng_smp_mb__after_atomic(void)
+{
+	smp_mb__after_atomic();
+}
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
+static inline void lttng_smp_mb__before_atomic(void)
+{
+	smp_mb__before_atomic_inc();
+}
+
+static inline void lttng_smp_mb__after_atomic(void)
+{
+	smp_mb__after_atomic_inc();
+}
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
+
+#endif /* _LTTNG_WRAPPER_ATOMIC_H */