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Subject: Re: Questions about locking; turnstiles and sleeping threads
From: Adrian Chadd <adrian@freebsd.org>
To: Alexander Kabaev <kabaev@gmail.com>
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On 12 November 2014 19:48, Adrian Chadd <adrian@freebsd.org> wrote:
> kan pointed out that we should likely do a WITNESS_WARN() in the
> relevant spots in the callout code so we catch these before it
> happens.
>
> I'll see what we can add to -HEAD to be pro-active about it.

Amusingly, I tried adding it and it made my laptop turn to soup very
quickly - among other things, the TCP timer callouts are all setup
with non sleep locks held.



-adrian