lib/bpf/libbpf.h

1298 LIBBPF_API int ring_buffer__poll(struct ring_buffer *rb, int timeout_ms);
1427  * ring buffer, possibly blocking for up to @timeout_ms until a sample becomes
1431  * @param timeout_ms The amount of time, in milliseconds, for which the caller
1440  * If **timeout_ms** is -1, the function will block indefinitely until a sample
1441  * becomes available. Otherwise, **timeout_ms** must be non-negative, or errno
1442  * is set to EINVAL, and NULL is returned. If **timeout_ms** is 0, no blocking
1449  * until at most **timeout_ms** has elapsed. If insufficient space is available
1461  * When a sample of size **size** is found within **timeout_ms**, a pointer to
1468 						    int timeout_ms);
1566 LIBBPF_API int perf_buffer__poll(struct perf_buffer *pb, int timeout_ms);