Date: Wed, 23 May 2001 19:19:10 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Cc: Brian Somers <brian@Awfulhak.org>, freebsd-arch@FreeBSD.ORG Subject: Re: RFC: unit_list routines Message-ID: <9639.990638350@critter> In-Reply-To: Your message of "Wed, 23 May 2001 13:16:10 EDT." <200105231716.NAA31092@khavrinen.lcs.mit.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <200105231716.NAA31092@khavrinen.lcs.mit.edu>, Garrett Wollman write s: ><<On Wed, 23 May 2001 18:02:09 +0100, Brian Somers <brian@Awfulhak.org> said: > >>> How does newbus allocate/manage unit numbers ? > >> I don't think it does. The only way to find out what's in use >> (AFAIK) is by looking at every specinfo in dev_hash.... > >You're looking in the wrong place again. > >This may have changed, but my recollection is that new-bus looks for >the greatest allocated unit number and then takes the next one. Since >this is initialization code, the fact that this is O(n^2) is of no >consequence. For pty and tun devices, this assumption may not hold... -- 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. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9639.990638350>