Date: Thu, 04 Dec 2008 14:42:53 +0000 From: "Bruce M. Simpson" <bms@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: [PATCH] ppbus/ppc locking Message-ID: <4937EC6D.7050703@FreeBSD.org> In-Reply-To: <200811191503.02192.jhb@freebsd.org> References: <200811191503.02192.jhb@freebsd.org>
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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. cheers BMS
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