Hi -
I'm encountering a problem on two machines, using Xenomai 2.4.4 and
2.4.5 and rtnet-0.9.10 and kernel 2.4.25. My task runs several
network interfaces
simultaneously, and works fine. However, after it has been running
for less than a minute or so, I start seeing messages that IRQ lines
are being disabled. For example I get the following:
[ 826.504131] irq 19: nobody cared (try booting with the "irqpoll" option)
[ 826.504266] Pid: 12349, comm: interface Not tainted 2.6.25 #3
[ 826.504880]
[ 826.504880] Call Trace:
[ 826.504880] [<ffffffff80266f97>] __report_bad_irq+0x30/0x7d
[ 826.504880] [<ffffffff802671ec>] note_interrupt+0x208/0x274
[ 826.504880] [<ffffffff80267af8>] handle_fasteoi_irq+0xa5/0xc8
[ 826.504880] [<ffffffff8020edc5>] do_IRQ+0x70/0xc3
[ 826.504880] [<ffffffff8020ed55>] do_IRQ+0x0/0xc3
[ 826.504880] [<ffffffff8026b026>] __ipipe_sync_stage+0x1fb/0x200
[ 826.504880] [<ffffffff8021a99b>] unmask_IO_APIC_irq+0x0/0x4d
[ 826.504880] [<ffffffff8026b02b>] __xirq_end+0x0/0x72
[ 826.504880] [<ffffffff8021cabe>] __ipipe_handle_irq+0x16d/0x1aa
[ 826.504880] [<ffffffff8020c3b1>] common_interrupt+0x61/0x7d
[ 826.504880]
[ 826.504880] handlers:
[ 826.504880] [<ffffffff8039d169>] (usb_hcd_irq+0x0/0x58)
[ 826.504880] [<ffffffff8039d169>] (usb_hcd_irq+0x0/0x58)
[ 826.504880] [<ffffffff8039d169>] (usb_hcd_irq+0x0/0x58)
[ 826.504880] Disabling IRQ #19
On the first machine I lose IRQs 16,17,18, and 19, knocking out my USB
keyboard and mouse. SInce I can still ssh into the machine this is
not a big deal. On the other machine I lose my SCSI controller and
disc access, and that is a big deal. The odd thing is that I don't
think there is a conflict between the IRQs xenomai is using and the
IRQs linux is using. (Xenomai uses 29 through 34). I did notice that
both the USB interrupts and the network card interrupts are on the
same APIC 'IO-APIC-fasteoi' - could this be relevant?
[EMAIL PROTECTED]:~/dc$ cat /proc/interrupts
CPU0 CPU1
0: 83 0 IO-APIC-edge timer
1: 0 2 IO-APIC-edge i8042
2: 0 0 XT-PIC-XT cascade
3: 0 6 IO-APIC-edge
4: 0 6 IO-APIC-edge
8: 0 0 IO-APIC-edge rtc
12: 0 4 IO-APIC-edge i8042
15: 15193 5040887 IO-APIC-edge ide1
16: 33301 166700 IO-APIC-fasteoi ehci_hcd:usb5
17: 38536 161465 IO-APIC-fasteoi AMD AMD8111
18: 55528 144473 IO-APIC-fasteoi ohci_hcd:usb3
19: 28674 371327 IO-APIC-fasteoi ohci_hcd:usb1,
ohci_hcd:usb2, ohci_hcd:usb4
28: 15018 2105225 IO-APIC-fasteoi eth1
29: 4 55 IO-APIC-fasteoi
30: 0 99 IO-APIC-fasteoi
31: 4 56 IO-APIC-fasteoi
32: 1 57 IO-APIC-fasteoi
33: 0 58 IO-APIC-fasteoi
34: 2 56 IO-APIC-fasteoi
35: 5 52 IO-APIC-fasteoi
38: 1 178 IO-APIC-fasteoi aic79xx
39: 0 15 IO-APIC-fasteoi aic79xx
NMI: 0 0 Non-maskable interrupts
LOC: 503363748 503270023 Local timer interrupts
RES: 480582796 147901527 Rescheduling interrupts
CAL: 1859 128 function call interrupts
TLB: 20638 21445 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
IRQ CPU0 CPU1
29: 6214108 119889421 rteth2
30: 9076593 116896795 rteth3
31: 3229707 68992087 rteth0
32: 9053331 116872191 rteth4
33: 11759796 114197142 rteth5
34: 24226910 83938001 rteth6
1285: 0 12886695 [IPI]
1288: 503887127 1006824447 [timer]
1289: 0 0 [critical sync]
1346: 0 671278641 [virtual]
Any thoughts or further tests to figure out what is going on?
Stuart
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