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Re: Softirq priority inversion from "softirq: reduce latencies"

From David Miller <davem@davemloft.net>
Newsgroups linux.kernel
Subject Re: Softirq priority inversion from "softirq: reduce latencies"
Date 2016-02-28 05:50 +0100
Message-ID <r71sS-5x9-3@gated-at.bofh.it> (permalink)
References <r6WCR-1Vu-1@gated-at.bofh.it> <r6YY2-3PY-5@gated-at.bofh.it> <r6Z7I-3Tt-1@gated-at.bofh.it>
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From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 27 Feb 2016 18:10:27 -0800

> That tasklet should run before any process.

You never have this guarantee, even before Eric's patch.
Under load tasklets run from ksoftirqd just like any other
softirq.

Please fix your driver and stop blaming Eric's change.

Thank you.

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Thread

Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-27 19:20 +0100
  Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-27 21:20 +0100
    Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-27 21:40 +0100
      Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-28 00:10 +0100
        Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-28 00:40 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-28 03:10 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-28 03:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-28 03:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-28 05:50 +0100
  Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-28 07:00 +0100
    Re: Softirq priority inversion from "softirq: reduce latencies" Francois Romieu <romieu@fr.zoreil.com> - 2016-02-28 18:10 +0100
      Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-29 06:00 +0100
        Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 16:10 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 16:30 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 17:00 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 17:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 19:10 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 19:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 20:00 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Thomas Gleixner <tglx@linutronix.de> - 2016-02-29 20:20 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-29 21:30 +0100
                Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-03-01 00:10 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 16:30 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 20:20 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 20:50 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-02-29 16:50 +0100
            Re: Softirq priority inversion from "softirq: reduce latencies" Peter Hurley <peter@hurleysoftware.com> - 2016-02-29 17:00 +0100
              Re: Softirq priority inversion from "softirq: reduce latencies" Eric Dumazet <eric.dumazet@gmail.com> - 2016-02-29 17:30 +0100
          Re: Softirq priority inversion from "softirq: reduce latencies" David Miller <davem@davemloft.net> - 2016-02-29 18:20 +0100

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