#include <wrapper/ringbuffer/frontend.h>
#include <wrapper/ringbuffer/iterator.h>
#include <wrapper/ringbuffer/nohz.h>
-#include <wrapper/atomic.h>
/*
* Internal structure representing offsets to use at a sub-buffer switch.
if (!atomic_long_add_unless(&buf->active_readers, 1, 1))
return -EBUSY;
kref_get(&chan->ref);
- lttng_smp_mb__after_atomic();
+ smp_mb__after_atomic();
return 0;
}
EXPORT_SYMBOL_GPL(lib_ring_buffer_open_read);
struct channel *chan = buf->backend.chan;
CHAN_WARN_ON(chan, atomic_long_read(&buf->active_readers) != 1);
- lttng_smp_mb__before_atomic();
+ smp_mb__before_atomic();
atomic_long_dec(&buf->active_readers);
kref_put(&chan->ref, channel_release);
}
+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0-only OR LGPL-2.1-only)
- *
- * wrapper/atomic.h
- *
- * wrapper around linux/atomic.h.
- *
- * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#ifndef _LTTNG_WRAPPER_ATOMIC_H
-#define _LTTNG_WRAPPER_ATOMIC_H
-
-#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 */