1/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
2#ifndef _TOOLS_LINUX_RING_BUFFER_H_
3#define _TOOLS_LINUX_RING_BUFFER_H_
4
5#include <linux/compiler.h>
6
7static inline __u64 ring_buffer_read_head(struct perf_event_mmap_page *base)
8{
9	return smp_load_acquire(&base->data_head);
10}
11
12static inline void ring_buffer_write_tail(struct perf_event_mmap_page *base,
13					  __u64 tail)
14{
15	smp_store_release(&base->data_tail, tail);
16}
17
18#endif /* _TOOLS_LINUX_RING_BUFFER_H_ */
19