diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:24:08 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:24:08 +0000 |
| commit | f449f278dd3c70e479a035f50a9bb817a9b433ba (patch) | |
| tree | 8ca2bfb785dda9bb4d573acdf9b42aea9cd51383 /src/contrib/libbpf/include/linux/ring_buffer.h | |
| parent | Initial commit. (diff) | |
| download | knot-f449f278dd3c70e479a035f50a9bb817a9b433ba.tar.xz knot-f449f278dd3c70e479a035f50a9bb817a9b433ba.zip | |
Adding upstream version 3.2.6.upstream/3.2.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/contrib/libbpf/include/linux/ring_buffer.h')
| -rw-r--r-- | src/contrib/libbpf/include/linux/ring_buffer.h | 18 |
1 files changed, 18 insertions, 0 deletions
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 <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_ */ |