I'm working on the p4080 processor in which I attempted to change the IRQ mask for Q-Man Portal as below.
root> ls -lrt /proc/irq/106/smp_affinity
-rw------- 1 root root 0 Jun 12 17:22 /proc/irq/106/smp_affinity
root> cat /proc/irq/106/smp_affinity
Getting Input Output error as below:
root> echo 0x01 > /proc/irq/106/smp_affinity
-bash: echo: write error: Input/output error
Any idea how IRQ can be masked to different core?
I understand that these portals are dedicated to a single core, but for one specific reason (performance of other server processes running on this core) want to change this setting.
Thanks in Advance.