Date: Sat, 22 Sep 2007 19:15:51 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Marcel Moolenaar <xcllnt@mac.com> Cc: arch@freebsd.org Subject: Re: Replacing/enhancing kernel printf() Message-ID: <22166.1190488551@critter.freebsd.dk> In-Reply-To: Your message of "Sat, 22 Sep 2007 11:41:15 MST." <FED4C690-E501-4F54-93AE-F5B75929BBA6@mac.com>
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In message <FED4C690-E501-4F54-93AE-F5B75929BBA6@mac.com>, Marcel Moolenaar wri tes: >>> Are you referring to: >>> http://lists.freebsd.org/mailman/htdig/freebsd-arch/2006-May/ >>> 005224.html > >Let's define "the low-level console" as nothing more than a >switchboard. The reason I didn't go that route, is that the "streams" have vastly different sematics, some are even bidirectional. At the very least you need to think carefully about all of the four distinct phases: Before the kernel runs Kernel until /sbin/init /sbin/init and single user mode Multiuser mode. Lumping them all together is what we have today, which we both recognize as not the way to go. I fully agree that printf(9) is an unholy tangle of all sorts of messages and that it should be possible to sort them, but that is only a small part of the console puzzle, and fixing that should not make the current tangle any worse. -- 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.
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