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Date:      Thu, 25 Oct 2001 23:13:48 +0900 (JST)
From:      Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org>
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 
Message-ID:  <20011025.231348.92585814.iwasaki@jp.FreeBSD.org>
In-Reply-To: <200110250505.f9P55R739324@harmony.village.org>
References:  <200110241653.f9OGrsL58421@freefall.freebsd.org> <XFMail.011024104456.jhb@FreeBSD.org> <200110250505.f9P55R739324@harmony.village.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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