http://bugs.freedesktop.org/show_bug.cgi?id=18609
Summary: Recent GEM kernels eventually start dropping interrupts
on intel
Product: DRI
Version: XOrg CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: General
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
After a few minutes in Xorg on Eric's for-airlied branch, the kernel produces
the following,
irq 16: nobody cared (try booting with the "irqpoll" option)
Pid: 0, comm: swapper Not tainted 2.6.27.5-100.fc10.x86_64 #1
Call Trace:
<IRQ> [<ffffffff810832a7>] __report_bad_irq+0x38/0x7c
[<ffffffff810834f3>] note_interrupt+0x208/0x26d
[<ffffffff81083c20>] handle_fasteoi_irq+0xbb/0xeb
[<ffffffff8101309e>] do_IRQ+0xf7/0x169
[<ffffffff81010933>] ret_from_intr+0x0/0x2e
<EOI> [<ffffffff81332650>] ? _spin_unlock_irqrestore+0x33/0x3e
[<ffffffff8105d675>] ? tick_broadcast_oneshot_control+0xf4/0xfd
[<ffffffff8105cf53>] ? tick_notify+0x22a/0x37b
[<ffffffff813354e6>] ? notifier_call_chain+0x33/0x5b
[<ffffffff81058bb0>] ? raw_notifier_call_chain+0xf/0x11
[<ffffffff8105c95d>] ? clockevents_notify+0x2b/0x63
[<ffffffff811bc4e2>] ? acpi_state_timer_broadcast+0x41/0x43
[<ffffffff811bcd1c>] ? acpi_idle_enter_simple+0x197/0x1b4
[<ffffffff81286103>] ? cpuidle_idle_call+0x95/0xc9
[<ffffffff8100f279>] ? cpu_idle+0xb2/0x10b
[<ffffffff8131f3dd>] ? rest_init+0x61/0x63
handlers:
[<ffffffffa03d73d3>] (i915_driver_irq_handler+0x0/0x19d [i915])
Disabling IRQ #16
After this Xorg performance degrades significantly, in my case requiring mouse
movement to force redraws. In other cases, this results in far more severe
effects (e.g. file system corruption)
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