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To: Sebastian Huber <sebastian.huber@embedded-brains.de>
cc: hackers@freebsd.org
Subject: Re: Remove timecounter tc_counter_mask member?
In-reply-to: <bc1a7b28-5e7b-4ee6-aae8-f95adc65fc76@embedded-brains.de>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
References: <bc1a7b28-5e7b-4ee6-aae8-f95adc65fc76@embedded-brains.de>
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--------
Sebastian Huber writes:

> the timecounter structure contains a tc_counter_mask which enables 
> support for time counters implementing less than 32-bits:

> Is the sys/x86/isa/clock.c still used? Are there chips on the market 
> with 24-bit ACPI timers?

... and are there any FreeBSD platforms using narrow timecounters
outside the src-tree ?

My personal gut feeling, is that we can get away with it, once i386
is out of the picture.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.