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Re: [regression v4.11] 617f01211baf ("8139too: use napi_complete_done()")

From David Miller <davem@davemloft.net>
Newsgroups linux.kernel
Subject Re: [regression v4.11] 617f01211baf ("8139too: use napi_complete_done()")
Date 2017-04-07 20:50 +0200
Message-ID <ttH7k-2Ox-7@gated-at.bofh.it> (permalink)
References <ttGEi-2A6-7@gated-at.bofh.it> <ttGXF-2Kw-43@gated-at.bofh.it>
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Fri, 07 Apr 2017 11:38:49 -0700

> I do not really see what could be wrong, the code should run just fine
> on UP.

One theory is that the interrupt masking isn't working properly
and interrupts are still arriving and hitting the NAPI state even
when we are actively polling NAPI.

And this problem was masked by the locking done here.

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[regression v4.11] 617f01211baf ("8139too: use napi_complete_done()") Ville Syrjälä <ville.syrjala@linux.intel.com> - 2017-04-07 20:20 +0200
  Re: [regression v4.11] 617f01211baf ("8139too: use  napi_complete_done()") Eric Dumazet <eric.dumazet@gmail.com> - 2017-04-07 20:40 +0200
    Re: [regression v4.11] 617f01211baf ("8139too: use  napi_complete_done()") David Miller <davem@davemloft.net> - 2017-04-07 20:50 +0200
      Re: [regression v4.11] 617f01211baf ("8139too: use  napi_complete_done()") Francois Romieu <romieu@fr.zoreil.com> - 2017-04-08 12:40 +0200
        Re: [regression v4.11] 617f01211baf ("8139too: use napi_complete_done()") tedheadster <tedheadster@gmail.com> - 2017-04-10 16:30 +0200
          Re: [regression v4.11] 617f01211baf ("8139too: use napi_complete_done()") Eric Dumazet <edumazet@google.com> - 2017-04-10 17:00 +0200
    Re: [regression v4.11] 617f01211baf ("8139too: use  napi_complete_done()") Ville Syrjälä <ville.syrjala@linux.intel.com> - 2017-04-10 14:20 +0200

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