| /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ | |
| #ifndef _TOOLS_LINUX_RING_BUFFER_H_ | |
| #define _TOOLS_LINUX_RING_BUFFER_H_ | |
| #include <linux/compiler.h> | |
| static inline __u64 ring_buffer_read_head(struct perf_event_mmap_page *base) | |
| { | |
| return smp_load_acquire(&base->data_head); | |
| } | |
| static inline void ring_buffer_write_tail(struct perf_event_mmap_page *base, | |
| __u64 tail) | |
| { | |
| smp_store_release(&base->data_tail, tail); | |
| } | |
| #endif /* _TOOLS_LINUX_RING_BUFFER_H_ */ |