[Bug 252816] x11-servers/xorg-server: patch to utilize CLOCK_MONOTONIC_FAST for the clock

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 28 Jun 2021 19:51:52 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=252816

--- Comment #5 from Warner Losh <imp@FreeBSD.org> ---
(In reply to Mitchell Horne from comment #4)

Well, the two cases that are the same are CLOCK_MONOTONIC and
CLOCK_MONOTONIC_PRECISE which call binuptime(). The CLOCK_MONOTONIC_FAST is
different. It calls getnanouptime(). The latter just looks at the cached time,
the former gets the TC from the kernel, reads the time hardware and does math.

So I still thinks there's a difference between the two.

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