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List:       freebsd-threads
Subject:    [Bug 210093] Redundant sq initialization in kern/subr_sleepqueue
From:       bugzilla-noreply () freebsd ! org
Date:       2016-06-13 15:53:32
Message-ID: bug-210093-16-bNEWLCOvK0 () https ! bugs ! freebsd ! org/bugzilla/
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210093

Konstantin Belousov <kib@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |kib@FreeBSD.org

--- Comment #2 from Konstantin Belousov <kib@FreeBSD.org> ---
(In reply to Bulat from comment #1)
Earlier assignment is performed only under invariants, i.e. in the debugging
kernel.  Later one is for the normal control flow.

So yes, for the invariants-enabled kernel the second assignment is excessive,
but there is no point of optimizing for INVARIANTS, which performs lot of
algorithmically unneeded work to make more robust checks.

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