-/* SPDX-License-Identifier: GPL-2.0-only
- *
- * wrapper/kref.h
- *
- * wrapper around linux/kref.h.
- *
- * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This wrapper code is derived from Linux 3.19.2 include/linux/list.h
- * and include/linux/rculist.h, hence the GPLv2 license applied to this
- * file.
- */
-
-#ifndef _LTTNG_WRAPPER_KREF_H
-#define _LTTNG_WRAPPER_KREF_H
-
-#include <linux/kref.h>
-#include <linux/rculist.h>
-#include <linux/version.h>
-
-/*
- * lttng_kref_get: get reference count, checking for overflow.
- *
- * Return 1 if reference is taken, 0 otherwise (overflow).
- */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0))
-static inline int lttng_kref_get(struct kref *kref)
-{
- kref_get(kref);
- return 1;
-}
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
-static inline int lttng_kref_get(struct kref *kref)
-{
- return atomic_add_unless(&kref->refcount, 1, INT_MAX);
-}
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)) */
-
-#endif /* _LTTNG_WRAPPER_KREF_H */