Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!uwvax!cottage!lm From: lm@cottage.WISC.EDU (Larry McVoy) Newsgroups: comp.unix.wizards Subject: Re: Why "u." and not "u->" ? (I'm reading Bach book) Message-ID: <3568@spool.WISC.EDU> Date: Tue, 12-May-87 13:50:19 EDT Article-I.D.: spool.3568 Posted: Tue May 12 13:50:19 1987 Date-Received: Fri, 15-May-87 01:03:17 EDT References: <626@vixie.UUCP> Sender: news@spool.WISC.EDU Reply-To: lm@cottage.WISC.EDU (Larry McVoy) Distribution: world Organization: U of Wisconsin CS Dept Lines: 9 In article <626@vixie.UUCP> paul@vixie.UUCP (Paul Vixie Esq) writes: >re-map the page, and is the trade-off worth it? Just how much is 'u.' used >between context switches, anyway? I daresay that it used every single time you enter the kernel for a system call (note: system call not system entry - drivers shouldn't pook about in the u struct 'cause it's probably someone elses). Larry McVoy lm@cottage.wisc.edu or uwvax!mcvoy