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BPF Timers Support Set To Finally Appear With Linux 5.15

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  • BPF Timers Support Set To Finally Appear With Linux 5.15

    Phoronix: BPF Timers Support Set To Finally Appear With Linux 5.15

    The latest BPF functionality set to appear with Linux 5.15 this autumn is timers support...

    https://www.phoronix.com/scan.php?pa...For-Linux-5.15

  • #2
    when i try to look far in the future i imagine a kernel consisting of drivers and a bpf interpreter in rust and everything else just being bpf scripts.

    what do you think? would that be a good?

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    • #3
      Originally posted by flower View Post
      when i try to look far in the future i imagine a kernel consisting of drivers and a bpf interpreter in rust and everything else just being bpf scripts.

      what do you think? would that be a good?
      Probably has the same problem as a pure microkernel... great in theory, but not good enough performance.

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      • #4
        Originally posted by flower View Post
        when i try to look far in the future i imagine a kernel consisting of drivers and a bpf interpreter in rust and everything else just being bpf scripts.
        what do you think? would that be a good?
        Don't think so. I don't like BPF, admittedly form my limited insight into it.
        I think there is a case to have native code there and that will prevail in the end, despite all concerns.

        BTW, why couldn't compiler's intermediate code be used there instead of BPF ?


        Last edited by Brane215; 24 July 2021, 02:16 AM.

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        • #5
          Giving high precision timers to in-kernel BPF programs.

          Not going to lie, if I were someone especially concerned about side-channels, I'd be plenty worried about this.

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