2.4.21pre3 smp_affinity, very strange

From: Hans Lambrechts (hans.lambrechts@skynet.be)
Date: Sun Jan 19 2003 - 10:45:03 EST


I noticed this recently:

pc:~ # cat /proc/interrupts
           CPU0 CPU1
  0: 39836 0 IO-APIC-edge timer
  1: 574 0 IO-APIC-edge keyboard
  2: 0 0 XT-PIC cascade
  8: 2 0 IO-APIC-edge rtc
  9: 0 0 IO-APIC-edge acpi
 12: 20362 0 IO-APIC-edge PS/2 Mouse
 14: 7 0 IO-APIC-edge ide0
 16: 8906 0 IO-APIC-level aic7xxx
 18: 789 0 IO-APIC-level eth0
NMI: 0 0
LOC: 39741 39740
ERR: 0
MIS: 0

pc:~ # cat /proc/irq/0/smp_affinity
ffffffff

pc:~ # echo ffffffff > /proc/irq/0/smp_affinity

pc:~ # cat /proc/interrupts
           CPU0 CPU1
  0: 50921 947 IO-APIC-edge timer
  1: 974 0 IO-APIC-edge keyboard
  2: 0 0 XT-PIC cascade
  8: 2 0 IO-APIC-edge rtc
  9: 0 0 IO-APIC-edge acpi
 12: 25530 0 IO-APIC-edge PS/2 Mouse
 14: 7 0 IO-APIC-edge ide0
 16: 8935 0 IO-APIC-level aic7xxx
 18: 801 0 IO-APIC-level eth0
NMI: 0 0
LOC: 51773 51772
ERR: 0
MIS: 0

Did the APIC or mpparse changes cause this?

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