** Description changed: In all kernels since 2.6.39, the "irqfixup" and "irqpoll" options are no longer taking effect. The interrupts now generate the same errors seen without these kernel options, e.g.: irq 19: nobody cared (try booting with the "irqpoll" option) even though irqpoll, or irqfixup, is used. The Linux irq code was reworked during the 2.6.39 cycle. I have gone through the patches, isolated two regressions, and submitted patches for each. The first bug effectively disabled the bad-irq handling routines, by a test condition be accidentally reversed. This is the commit where the regression arrives: commit d05c65fff0 , genirq: spurious: Run only one poller at a time http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=d05c65fff0ef672be75429266751f0e015b54d94 - The maintainer has accepted my patch for that, and it will be in Linux - 3.2. I'm keeping an eye on the stable tree. At this point, I'd ask - Ubuntu to apply it. It's attached here, and is in Linus' tree at: + The maintainer has accepted my patch for that, and it's on its way into + releases: it will be in Linux 3.2, and upcoming stable releases, likely + 3.0.11 and 3.1.3. And it's marked as committed to Oneirc now. It's + attached here, and is in Linus' tree at: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=c75d720fca8a91ce99196d33adea383621027bf2 That bug disabled irqfixup & irqpoll for everybody. But with that fixed, I had some machines where those kernel options still failed. I bisected that problem to here: commit fa27271bc , genirq: Fixup poll handling http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=fa27271bc8d230355c1f24ddea103824fdc12de6 I've just submitted another patch, for that regression. (So far, no one else seeing this bug report has hit that second regression, so there may be no one here in a position to test it. I have found a previous post to LKML, from a user who bisected his problem to the same commit, fa2727, so I may try to contact him: https://lkml.org/lkml/2011/7/24/54 .) At any rate, my second submission to Thomas can be watched here: - https://lkml.org/lkml/2011/11/19/189 + https://lkml.org/lkml/2011/11/19/189 And I'll report back.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/855199 Title: "irqfixup" and "irqpoll" broken since 2.6.39 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/855199/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
