Date: Thu, 11 Apr 2002 10:47:45 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Bruce Evans <bde@zeta.org.au> Cc: Brian Somers <brian@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, Jake Burkholder <jake@locore.ca> Subject: Re: cvs commit: src/sys/dev/digi digi.c Message-ID: <XFMail.20020411104745.jhb@FreeBSD.org> In-Reply-To: <20020411162116.D3455-100000@gamplex.bde.org>
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On 11-Apr-2002 Bruce Evans wrote: > On Wed, 10 Apr 2002, Jake Burkholder wrote: > >> Apparently, On Wed, Apr 10, 2002 at 09:06:18AM -0400, >> John Baldwin said words to the effect of; >> > I've thought about having some sort of separate API for code that just >> > ways to >> > delay. Right now they use tsleep() on a channel that never gets woken up >> > with >> > a timeout. If we had a delay(int timo) function then it could use a >> > callout >> > when callouts were working and fall back to DELAY() in the cold case. >> >> No, this is wrong. Anything that uses cold is wrong. The correct fix is to >> move the clock initialization earlier in boot to be before the device probe. > > This can't be done in a machine independent way. Clock interrupts > might be shared, and then enabling them first would cause either endless > interrupts if another device is driving the interrupt. This happens > not to be a problem on i386's because clock interrupts aren't shared. They aren't shared on anything else we use run on right now either. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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