Date: Thu, 14 Dec 2000 11:24:50 -0800 (PST) From: Matthew Jacob <mjacob@feral.com> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: John Baldwin <jhb@FreeBSD.ORG>, alpha@FreeBSD.ORG Subject: RE: mutex/ithread jitters? Message-ID: <Pine.LNX.4.21.0012141124180.28426-100000@zeppo.feral.com> In-Reply-To: <14905.7357.440285.591097@grasshopper.cs.duke.edu>
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> > Matthew Jacob writes: > > > > > > John Baldwin writes: > > > > > > > > Sounds like lost interrupts. Possibly the interrupt isn't being enabled > > > > properly after the ithread finishes running the handler. > > > > > > Maybe it is time to accept defeat on squelching interrupts at their source > > > and leave the IPL raised until the handler is run? > > > > They may be orthogonal issues. > > Maybe, but maybe not. Your 4100's missing interrupts sound similar to > the missing isa interrupt problems on my UP1000. > > As Doug mentioned before, leaving the ipl raised would probably be > more efficient that groveling around in the interrupt hardware. And > it would be nice to not make every platform have to be 100% perfect > wrt to enabling/disabling interrupts... No arguments from me on this one (after all, ahem, I suggested it first!). But I haven't gotten around to breaking free the day or so it will take to do this. -matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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