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/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
*
* wrapper/compiler_attributes.h
*
* Copyright (C) 2021 Michael Jeanson <mjeanson@efficios.com>
*/
#ifndef _LTTNG_WRAPPER_COMPILER_ATTRIBUTES_H
#define _LTTNG_WRAPPER_COMPILER_ATTRIBUTES_H
#include <lttng/kernel-version.h>
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,20,0))
#include <linux/compiler_attributes.h>
#endif
#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,4,0))
/*
* Use the kernel provided fallthrough attribute macro.
*/
#define lttng_fallthrough fallthrough
#else /* LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,4,0) */
/*
* Fallback to the comment for kernels pre 5.15 that don't build with
* '-Wimplicit-fallthrough=5'.
*/
#define lttng_fallthrough do {} while (0) /* fallthrough */
#endif /* LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,4,0) */
#endif /* _LTTNG_WRAPPER_COMPILER_ATTRIBUTES_H */
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