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Date: Thu, 25 Oct 2001 23:13:48 +0900 (JST)
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To: imp@harmony.village.org
Cc: jhb@FreeBSD.org, ume@FreeBSD.org, cvs-all@FreeBSD.org,
	cvs-committers@FreeBSD.org
Subject: Re: cvs commit: src/sys/modules Makefile src/sys/modules/apm Mak 
From: Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org>
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Hi,

> : > How does this work with things like the timecounter code which disables the TSC
> : > timecounter in the APM case?
> : 
> : Yes, and maybe syscons too?  Anyway, I'll change releated code with
> : `#ifdev DEV_APM'.
> : 
> : # sorry, I'll be away until tonight...
> 
> Maybe
> 	if (apm_attached)
> 		return;
> 	/* do tsc */
> 
> and have apm_attached always in the kernel and have it set when apm is
> attached.  Ditto for other users.

Yes like that, but it's not so easy :)
Because startrtclock() is launched from cpu_startup() which is part of
SI_SUB_CPU subsystem.  APM is attached later stage than SI_SUB_CPU.
Maybe we need to exchange priority of SI_SUB_CPU and SI_SUB_KLD at
least to tell startrtclock() presence of apm(4).

I'm working on this based on
http://people.freebsd.org/~iwasaki/acpi/power-20010113.tar.gz
few more hours to complete...

Thanks

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