Date: Tue, 24 Oct 2000 09:41:20 +1100 (EST) From: Bruce Evans <bde@zeta.org.au> To: Matthew Jacob <mjacob@feral.com> Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>, freebsd-smp@FreeBSD.ORG Subject: Re: cvs commit: src/sys/sys mutex.h Message-ID: <Pine.BSF.4.21.0010240909240.1797-100000@besplex.bde.org> In-Reply-To: <Pine.LNX.4.21.0010230949140.9395-100000@zeppo.feral.com>
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On Mon, 23 Oct 2000, Matthew Jacob wrote: > Strictly speaking, not an inline- but instead a per-platform locore.s > function- on sun4u it's: > > > retl > mov THREAD_REG, %o0 > > On i86 it's: > > movl %gs:CPU_THREAD, %eax > ret > > > This approach solves the KLD issue. But we have to get everyone to agree that > even UP kernels have to pay the cost of even trivial function reference > instead of linktime binding. I wouldn't agree. Just #define machine-dependent access macros in all cases. In particular, don't require MI code to know that per-cpu globals are sometimes normal globals and sometimes macros. Only the i386 UP case made the mistake of not #defining curproc, at least until recently. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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