Date: Mon, 25 Mar 2002 19:10:22 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: John Baldwin <jhb@FreeBSD.org> Cc: Jake Burkholder <jake@locore.ca>, <freebsd-smp@FreeBSD.ORG>, Andy Isaacson <adi@hexapodia.org> Subject: printf locking (was Re: FreeBSD 4.5: Second CPU Not Working on Dell PowerEdge 1650) Message-ID: <20020325190742.B99274-100000@salmon.nlsystems.com> In-Reply-To: <XFMail.20020325114024.jhb@FreeBSD.org>
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On Mon, 25 Mar 2002, John Baldwin wrote: > > Hmmmm. Well, we really need proper printf locking (which probably shouldn't > use blocking locks). Weren't there some patches (from chuckp?) floating around to do this. Something along the lines of a trylock which buffers characters somewhere if it fails. I wanted this (again) recently - I couldn't work out why syscons kept wedging until I remembered there were no locks on the console. In the end, I just switched to a serial console. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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