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fdpousa
Participant
Participant
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Registered: ‎11-08-2017

Petalinux: How to handle efficiently IRQ among Processors?

Hi all!

We want to distribute IRQs coming from ETH IP Cores implemented on PL among the different processors of a ZCU102 Board.

For the moment we are able to assign IRQs to a core using:

echo "2" > /proc/irq/56/smp_affinity

This way work for us but we want go a little bit longer. Our objective is to boot up our Petalinux and next the IRQs form Ethernet are allocated automatically in a processor. Can we assign efficiently the IRQs to the cores without writing anything into smp_affinity?

We check this link and it seems it is possible enabling the CONFIG_HOTPLUG_CPU option in kernel. Have any of you done something similar?

Regards,

Fer

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