From f449f278dd3c70e479a035f50a9bb817a9b433ba Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:24:08 +0200 Subject: Adding upstream version 3.2.6. Signed-off-by: Daniel Baumann --- src/contrib/libbpf/include/linux/ring_buffer.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 src/contrib/libbpf/include/linux/ring_buffer.h (limited to 'src/contrib/libbpf/include/linux/ring_buffer.h') diff --git a/src/contrib/libbpf/include/linux/ring_buffer.h b/src/contrib/libbpf/include/linux/ring_buffer.h new file mode 100644 index 0000000..fc4677b --- /dev/null +++ b/src/contrib/libbpf/include/linux/ring_buffer.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ +#ifndef _TOOLS_LINUX_RING_BUFFER_H_ +#define _TOOLS_LINUX_RING_BUFFER_H_ + +#include + +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_ */ -- cgit v1.2.3