I suspect it is a bug, mine is Ubuntu 3.2.0-32 pae kernel, 12.04 32-bit:
cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
41: 0 0 0 0 PCI-MSI-edge eth0
eth0 Link encap:Ethernet HWaddr 5c:f9:dd:75:54:d8
Interrupt:41 Base address:0x8000
everything matched.cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
41: 0 0 0 0 PCI-MSI-edge eth0
eth0 Link encap:Ethernet HWaddr 5c:f9:dd:75:54:d8
Interrupt:41 Base address:0x8000
On Fri, Jul 25, 2014 at 9:58 PM, Oscar Salvador <osalvador.vilardaga@xxxxxxxxx> wrote:
Hi People! How are you doing?
I'm writting to you because I have a doubt about interrupts.
If I look the interrupts assigned to my eth* with ifconfig, I get:
eth0 Link encap:Ethernet HWaddr bb:aa:bb:bb:aa:aa
Interrupt:20 Memory:f7e00000-f7e20000
eth1 Link encap:Ethernet HWaddr bb:aa:bb:bb:aa:aa
Interrupt:18 Memory:f7d00000-f7d20000
As you can see, my system assigned IRQ-20 and IRQ-18 to eth0 and eth1.
But If i look into /proc/interrupts, I don't have these interrupts:
root@oscar:/home/oscar# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7
0: 15 0 0 0 0 0 0 0 IR-IO-APIC-edge timer
8: 0 1 0 0 0 0 0 0 IR-IO-APIC-edge rtc0
9: 0 0 0 0 0 2 1 0 IR-IO-APIC-fasteoi acpi
16: 191342 27819 25143 21231 19007 18159 17183 15717 IR-IO-APIC-fasteoi ehci_hcd:usb3
19: 15 7 0 0 2 9 1 4 IR-IO-APIC-fasteoi firewire_ohci
23: 1441 76 61 42 101 55 29 23 IR-IO-APIC-fasteoi ehci_hcd:usb4
40: 0 0 0 0 0 0 0 0 DMAR_MSI-edge dmar0
41: 0 0 0 0 0 0 0 0 DMAR_MSI-edge dmar1
42: 0 0 0 0 0 0 0 0 IR-PCI-MSI-edge xhci_hcd
43: 27318 1788 1314 1414 4046 2273 2232 2059 IR-PCI-MSI-edge eth0
44: 115244 14686 10096 8738 41559 16021 10972 10090 IR-PCI-MSI-edge ahci
45: 197010 19487 45260 14687 43697 29520 24546 21590 IR-PCI-MSI-edge eth1-rx-0
46: 27239 20276 18861 14845 54218 17950 12907 9765 IR-PCI-MSI-edge eth1-tx-0
47: 0 0 1 0 0 0 0 1 IR-PCI-MSI-edge eth1
48: 262 150 78 60 261 249 168 47 IR-PCI-MSI-edge snd_hda_intel
49: 857324 80338 67789 59555 682632 90385 78616 65048 IR-PCI-MSI-edge i915
As you can see, seems to be that eth1 has IRQ-45 IRQ-46 and IRQ-47, and eth0 has IRQ-43.
I don't understand why ifconfig shows another IRQ.
Is this a normal behaviour? Someone would be so kind to explain me this?
Or maybe throw me some paper that explains this.
thank you very much
Best Regards
Oscar
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@xxxxxxxxxxxxxxxxx
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
--
Regards,
Peter Teoh
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
