smp_affinity weirdness in LK 2.6.14
Dimitri Puzin <[email protected]>
| Newsgroups | gmane.linux.smp |
|---|---|
| Message-ID | <[email protected]> |
Hello, I found that I cannot change IRQ affinity in the 2.6.14 kernel. It works however on the 2.6.13.4 and earlier. 2.6.13.4: # cat /proc/irq/189/smp_affinity 1 # echo 2 > /proc/irq/189/smp_affinity # cat /proc/irq/189/smp_affinity 2 # 2.6.14: # cat /proc/irq/189/smp_affinity 1 # echo 2 > /proc/irq/189/smp_affinity # cat /proc/irq/189/smp_affinity 1 # /proc/interrupts is also showing that all all IRQs are bound to CPU0. I must add, that this system is a P4 with HyperThreading support. I've tried both with CONFIG_IRQBALANCE=y and n but the result is always the same. With the new kernel I cannot balance the IRQs neither by hand, nor userspace/kernel tools. Is that normal? Regards -Dimitri - To unsubscribe from this list: send the line "unsubscribe linux-smp" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html