Date: Wed, 21 Jan 2009 15:36:08 -0500 From: John Baldwin <jhb@freebsd.org> To: "Bruce M. Simpson" <bms@freebsd.org> Cc: current@freebsd.org Subject: Re: [PATCH] ppbus/ppc locking Message-ID: <200901211536.08297.jhb@freebsd.org> In-Reply-To: <4937EC6D.7050703@FreeBSD.org> References: <200811191503.02192.jhb@freebsd.org> <4937EC6D.7050703@FreeBSD.org>
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On Thursday 04 December 2008 9:42:53 am Bruce M. Simpson wrote: > John Baldwin wrote: > > Please test! This is the last non-MPSAFE network driver at this point. This > > patch adds locking for the ppbus(4)/ppc(4) devices and the various ppbus > > child devices (lpt, vpo, lpbb, ppi, pps). The basic model is that a single > > mutex in the ppc(4) driver protects the ppc0 hardware and is shared with the > > various child drivers. Two drivers now have detach methods that did not have > > them before (plip and ppi). I've done some simple testing on my laptop (able > > to load the drivers and do some simple things w/o panic'ing or tripping > > assertions), but I am not really able to test the peripheral drivers fully. > > > > http://www.FreeBSD.org/~jhb/patches/ppc_locking.patch > > > > > > Runway lpt Giant is an occasionally show stopping issue for me because > my printer is attached via the plt port. I may get time to look at this > later on... > > I tried applying these patches against 7-STABLE. > > ppc_cleanup.patch applied OK to 7. > > ppc_intr.patch applied OK to 7 with interrupt.h change manually merged, > and some fixups to ppc.c for earlier intr_event kpi. > > ppc_locking.patch does not apply cleanly, and it's too much for me to > deal with right now. > > I found I had to hack up an existing 7 tree in /usr/src to get things to > compile because of the wide scope of the changes (touching kern, sys > etc), I couldn't just use an svn checkout to work from. Try http://www.FreeBSD.org/~jhb/patches/ppc_mpsafe_7.patch It is a complete backport generated against a fresh stable/7 tree. It does not need the interrupt changes since my locking patches actually undo them. -- John Baldwin
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