On Fri, 2008-11-07 at 22:00 +0000, Steven J Newbury wrote: > On Fri, 2008-11-07 at 21:44 +0000, Steven J Newbury wrote: > > On Fri, 2008-11-07 at 20:45 +0000, Steven J Newbury wrote: > > > On Fri, 2008-11-07 at 11:11 -0800, Eric Anholt wrote: > > > > On Fri, 2008-11-07 at 14:01 +0000, Steven J Newbury wrote: > > > > > > > I'm on 965GM and I'm having a serious interrupt problem since this > > > > > patch > > > > > went into for-review: > > > > > > > > > > Nov 7 04:20:22 infinity irq 16: nobody cared (try booting with the > > > > > "irqpoll" option) > > > > > Nov 7 04:20:22 infinity Pid: 0, comm: swapper Not tainted > > > > > 2.6.28-rc3-00236-g1d7eff8 #23 > > > > > Nov 7 04:20:22 infinity Call Trace: > > > > > Nov 7 04:20:22 infinity <IRQ> [<ffffffff80491a25>] ? > > > > > i915_driver_irq_handler+0x53/0x186 > > > > > Nov 7 04:20:22 infinity [<ffffffff80270b55>] > > > > > __report_bad_irq+0x3d/0x8c > > > > > Nov 7 04:20:22 infinity [<ffffffff80270cb7>] > > > > > note_interrupt+0x113/0x178 > > > > > Nov 7 04:20:22 infinity [<ffffffff802713db>] handle_fasteoi_irq > > > > > +0x99/0xc3 > > > > > Nov 7 04:20:22 infinity [<ffffffff8020ee5f>] do_IRQ+0x9c/0x11d > > > > > Nov 7 04:20:22 infinity [<ffffffff8020c826>] ret_from_intr+0x0/0xa > > > > > Nov 7 04:20:22 infinity <EOI> [<ffffffff804572c0>] ? > > > > > acpi_idle_enter_simple+0x175/0x1a8 > > > > > Nov 7 04:20:22 infinity [<ffffffff804572b6>] ? acpi_idle_enter_simple > > > > > +0x16b/0x1a8 > > > > > Nov 7 04:20:22 infinity [<ffffffff8052af56>] ? cpuidle_idle_call > > > > > +0xa6/0xe0 > > > > > Nov 7 04:20:22 infinity [<ffffffff8020b47a>] ? cpu_idle+0x4c/0xb0 > > > > > Nov 7 04:20:22 infinity [<ffffffff80614551>] ? rest_init+0x75/0x77 > > > > > Nov 7 04:20:22 infinity handlers: > > > > > Nov 7 04:20:22 infinity [<ffffffff804919d2>] (i915_driver_irq_handler > > > > > +0x0/0x186) > > > > > Nov 7 04:20:22 infinity Disabling IRQ #16 > > > > > > > > > > This happens after a random amount of time in X, athough never very > > > > > long. From this point on there are no interrupts generated unless I > > > > > switch vts away from X and back again. > > I'm wrong here. Switching vts only "fixes" the second problem below. > > > > > This gets interrupts working > > > > > again for a short while. > > > > > > > > Can you get /proc/dri/0/i915_gem_interrupt from before and just after > > > > the problem occurs? > > > > > > > I'll fire up a for-review kernel and see what it says. > > > > Before X: > > > > Interrupt enable: 00000000 > > Interrupt identity: 00000000 > > Interrupt mask: fffedfff > > Pipe A stat: 00000203 > > Pipe B stat: 80000206 > > Interrupts received: 0 > > Current sequence: 0 > > Waiter sequence: 0 > > IRQ sequence: 0 > > > > After X has started: > > > > Interrupt enable: 00000051 > > Interrupt identity: 00000002 > > Interrupt mask: fffedfac > > Pipe A stat: 00020204 > > Pipe B stat: 00000206 > > Interrupts received: 1327 > > Current sequence: 1742 > > Waiter sequence: 0 > > IRQ sequence: 1738 > > > > Interrupt enable: 00000051 > > Interrupt identity: 00000002 > > Interrupt mask: fffedfac > > Pipe A stat: 00020204 > > Pipe B stat: 00000206 > > Interrupts received: 33424 > > Current sequence: 43154 > > Waiter sequence: 0 > > IRQ sequence: 43132 > > > > Interrupt enable: 00000051 > > Interrupt identity: 00000002 > > Interrupt mask: fffedfac > > Pipe A stat: 00020204 > > Pipe B stat: 00020000 > > Interrupts received: 42250 > > Current sequence: 58442 > > Waiter sequence: 0 > > IRQ sequence: 58434 > > ____ > > > > After interrupt failure: > > > > Interrupt enable: 00000051 > > Interrupt identity: 00000000 > > Interrupt mask: fffedfac > > Pipe A stat: 00020204 > > Pipe B stat: 00000206 > > Interrupts received: 200097 > > Current sequence: 96282 > > Waiter sequence: 0 > > IRQ sequence: 96282 > > > > Output of 'cat /proc/interrupts' : > > CPU0 CPU1 > > 0: 309831 301848 IO-APIC-edge timer > > 1: 964 1747 IO-APIC-edge i8042 > > 4: 1 1 IO-APIC-edge > > 8: 1 0 IO-APIC-edge rtc0 > > 9: 0 1 IO-APIC-fasteoi acpi > > 12: 11555 16280 IO-APIC-edge i8042 > > 14: 0 0 IO-APIC-edge ata_piix > > 15: 0 0 IO-APIC-edge ata_piix > > 16: 99522 100479 IO-APIC-fasteoi [EMAIL > > PROTECTED]:0000:00:02.0 > > 19: 6 9 IO-APIC-fasteoi yenta, firewire_ohci > > 20: 75 63 IO-APIC-fasteoi uhci_hcd:usb1, > > uhci_hcd:usb3, ehci_hcd:usb7 > > 21: 204 216 IO-APIC-fasteoi uhci_hcd:usb2, > > uhci_hcd:usb4, HDA Intel > > 22: 352 644 IO-APIC-fasteoi uhci_hcd:usb5, > > ehci_hcd:usb6 > > 43: 4898 5996 PCI-MSI-edge ahci > > NMI: 0 0 Non-maskable interrupts > > LOC: 116278 86951 Local timer interrupts > > RES: 27385 27476 Rescheduling interrupts > > CAL: 91 32 Function call interrupts > > TLB: 32 96 TLB shootdowns > > TRM: 0 0 Thermal event interrupts > > THR: 0 0 Threshold APIC interrupts > > SPU: 0 0 Spurious interrupts > > ERR: 0 > > MIS: 0 > > Curiously, the i915_gem_interrupt count continues to rise despite no > more interrupts being recorded in /proc/interrupts. Clearly interrupts > are not working, X is very slow, and glxgears reports interrupts are not > working correctly. > > Currently: > cat /proc/dri/0/i915_gem_interrupt > Interrupt enable: 00000051 > Interrupt identity: 00000002 > Interrupt mask: fffedfac > Pipe A stat: 00000000 > Pipe B stat: 00000206 > Interrupts received: 615479 > Current sequence: 308340 > Waiter sequence: 0 > IRQ sequence: 308338
Unless keithp's most recent patch moving BREADCRUMB_INDEX prevents some internal brain damage, messing with IER often seems to be a bad idea, at least on 965gm. I've spent most of the week fighting this issue on FreeBSD. Last night, I flipped the logic back to setting up IER during interrupt handler install and flipping bits in IMR to enable / disable irqs and everything is working correctly again. I have made some other code changes in the handler, but none of them resolved the issue. Inverting the logic got everything working again, for both INTx and MSI. I know that it is published that MSI should not be used on the 965gm, but I've not seen any issues on my hardware. robert. > > Interrupts have since restarted a couple of times, it *may* be due to VT > switching after all (repeated VT switching apparently can cause the > system to lock up when interrupts aren't working correctly), but they > stopped again at *very* suspiciously round numbers: > > For example: > 16: 299110 300893 IO-APIC-fasteoi [EMAIL PROTECTED]:0000:00:02.0 > > They also previously stopped around ~150000 ~150000 > > > > > > > > > This is possibly also related to the massive slowdown I get X uses > > > > > 20%+ > > > > > CPU constantly and continually probes DDC, when I switch to battery, > > > > > this I had expected to be fixed by the recent patch removing ACPI > > > > > event > > > > > handling, but strangely it still occurs. > > > > > > > > You're the only person I've heard of with this problem. You'll need to > > > > figure out what's causing it. We still handle ACPI events, it was just > > > > an internal timer potentially firing off DDC that was removed. > > > > > > > I wonder if it's the VBIOS triggering continuous events? It may have > > > started happening when I updated to revision A13 (the latest) of the > > > Dell D830 BIOS. Perhaps I'm the only tester with a D830? > > > > > > Any idea how I could track this down? > > > > > > > > > _______________________________________________ > > Intel-gfx mailing list > > [EMAIL PROTECTED] > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > -- > _______________________________________________ > Dri-devel mailing list > Dri-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dri-devel
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