Date: Fri, 28 Oct 2005 10:41:42 -0400 From: John Baldwin <jhb@freebsd.org> To: Peter Wemm <peter@wemm.org> Cc: Mark Linimon <linimon@lonesome.com>, src-committers@freebsd.org, cvs-all@freebsd.org, cvs-src@freebsd.org Subject: Re: cvs commit: src/sys/alpha/alpha interrupt.c src/sys/alpha/isa isa.c src/sys/amd64/amd64 intr_machdep.c src/sys/amd64/include intr_machdep.h src/sys/amd64/isa atpic.c src/sys/arm/arm intr.c src/sys/dev/sio sio.c src/sys/dev/uart uart_kbd_sun.c uart_tty.c ... Message-ID: <200510281041.44147.jhb@freebsd.org> In-Reply-To: <200510261648.27126.peter@wemm.org> References: <200510251948.j9PJmmmj043891@repoman.freebsd.org> <200510261320.46985.jhb@freebsd.org> <200510261648.27126.peter@wemm.org>
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On Wednesday 26 October 2005 07:48 pm, Peter Wemm wrote: > On Wednesday 26 October 2005 10:20 am, John Baldwin wrote: > > On Tuesday 25 October 2005 06:45 pm, Mark Linimon wrote: > > > On Tue, Oct 25, 2005 at 07:48:48PM +0000, John Baldwin wrote: > > > > Reorganize the interrupt handling code a bit to make a few > > > > things cleaner and increase flexibility to allow various > > > > different approaches to be tried in the future. > > > > > > Wow. Having (in a previous existance) worked on real-time OS > > > interrupt handlers I can likely guess how much work went into this. > > > Nice. > > > > Actually, this diff wasn't a huge deal, it was mostly just a > > refactoring of what was already there. > > Of course the real challenge is to make things like the puc device do > the right thing automatically instead of needing 'options > PUC_FASTINTR'. You mean like sio(4) tried to? The problem is that with the previosu code if sio(4) went first, it would register INTR_FAST and some later PCI device wouldn't be able to register its interrupt. There's not an easy solution to that problem if you want to keep the semantics that INTR_FAST implies INTR_EXCL. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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