This allows the user to do their own manual polling in more complicated setups.
Signed-off-by: Brendan Jackman <[email protected]> --- tools/lib/bpf/libbpf.h | 1 + tools/lib/bpf/ringbuf.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 6909ee81113a..cde07f64771e 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -536,6 +536,7 @@ LIBBPF_API int ring_buffer__add(struct ring_buffer *rb, int map_fd, ring_buffer_sample_fn sample_cb, void *ctx); LIBBPF_API int ring_buffer__poll(struct ring_buffer *rb, int timeout_ms); LIBBPF_API int ring_buffer__consume(struct ring_buffer *rb); +LIBBPF_API int ring_buffer__epoll_fd(struct ring_buffer *rb); /* Perf buffer APIs */ struct perf_buffer; diff --git a/tools/lib/bpf/ringbuf.c b/tools/lib/bpf/ringbuf.c index 5c6522c89af1..45a36648b403 100644 --- a/tools/lib/bpf/ringbuf.c +++ b/tools/lib/bpf/ringbuf.c @@ -282,3 +282,9 @@ int ring_buffer__poll(struct ring_buffer *rb, int timeout_ms) } return cnt < 0 ? -errno : res; } + +/* Get an fd that can be used to sleep until data is available in the ring(s) */ +int ring_buffer__epoll_fd(struct ring_buffer *rb) +{ + return rb->epoll_fd; +} base-commit: b4fe9fec51ef48011f11c2da4099f0b530449c92 -- 2.29.2.576.ga3fc446d84-goog
