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aya: Implement RingBuf #294

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wants to merge 3 commits into from
Closed

aya: Implement RingBuf #294

wants to merge 3 commits into from

Commits on Nov 5, 2022

  1. aya-bpf: implement ringbuf map 

    Co-authored-by: William Findlay <william@williamfindlay.com>
    @ishitatsuyuki @willfindlay
    ishitatsuyuki and willfindlay committed Nov 5, 2022
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  2. aya: move mmap from perf_buffer.rs to sys/mod.rs 

    mmap() is needed for the ring buffer implementation, so move it to a common module
    @willfindlay @ishitatsuyuki
    willfindlay authored and ishitatsuyuki committed Nov 5, 2022
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  3. aya: Implement RingBuf 

    This implements the userspace binding for RingBuf.

Instead of streaming the samples as heap buffers, the process_ring
function takes a callback to which we pass the event's byte region,
roughly following [libbpf]'s API design. This avoids a copy and allows
marking the consumer pointer in a timely manner.

[libbpf]: https://github.com/libbpf/libbpf/blob/master/src/ringbuf.c

Co-authored-by: William Findlay <william@williamfindlay.com>
    @ishitatsuyuki @willfindlay
    ishitatsuyuki and willfindlay committed Nov 5, 2022
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