Date: Tue, 27 Mar 2007 20:20:17 +0200 From: "Attilio Rao" <attilio@freebsd.org> To: "John Baldwin" <jhb@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/kern init_main.c kern_thread.c Message-ID: <3bbf2fe10703271120p4c33230dpbcfc2d72164113e9@mail.gmail.com> In-Reply-To: <200703271651.l2RGpZfv012442@repoman.freebsd.org> References: <200703271651.l2RGpZfv012442@repoman.freebsd.org>
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2007/3/27, John Baldwin <jhb@freebsd.org>: > jhb 2007-03-27 16:51:34 UTC > > FreeBSD src repository > > Modified files: > sys/kern init_main.c kern_thread.c > Log: > Align 'struct thread' on 16 byte boundaries so that the lower 4 bits are > always 0. Previously we aligned threads on a minimum of 8-byte boundaries. > > Note: This changes the uma zone to no longer cache align threads. We > really want the uma zone to do align threads to MAX(16, cache line size) > but there currently isn't a good way to express that to uma. We can workaround it using a function like: int uma_get_align(void) (which would be the counter part of uma_set_align). Its implementations is trivial. Attilio -- Peace can only be achieved by understanding - A. Einstein
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