Hi,
I have an Intel dual core machine but all interrupts are received on CPU 0.
I have built kernel 2.6.15.7 and following is an excerpt from my config file
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_TSC=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_SMP=y
CONFIG_NR_CPUS=2
CONFIG_SCHED_SMT=y
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_BKL=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
Yet when I look at /proc/interrupts this is what I get
CPU0 CPU1
0: 171883 0 IO-APIC-edge timer
1: 3797 0 IO-APIC-edge i8042
8: 3 0 IO-APIC-edge rtc
9: 3 0 IO-APIC-level acpi
12: 240 0 IO-APIC-edge i8042
14: 8227 0 IO-APIC-edge libata
15: 2 0 IO-APIC-edge libata
50: 0 0 IO-APIC-level uhci_hcd:usb3
58: 0 0 IO-APIC-level uhci_hcd:usb4
66: 6748 0 PCI-MSI eth0
185: 7 0 IO-APIC-level yenta
225: 150 0 IO-APIC-level uhci_hcd:usb1, ehci_hcd:usb5
233: 28122 0 IO-APIC-level uhci_hcd:usb2, HDA Intel
NMI: 0 0
LOC: 171791 171790
ERR: 0
MIS: 0
Why is the interrupt count on CPU1 0? Have I missed something in the
kernel configuration file or is this how a dual core machine behave
actually.
-
Thanks and Regards,
Ranjan
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