#!/bin/bash
# Copyright (C) 2020-2022 Intel Corporation.
# SPDX-License-Identifier: BSD-3-Clause

#Move all IRQs to core 0.
for i in `cat /proc/interrupts | grep '^ *[0-9]*[0-9]:' | awk {'print $1'} | sed 's/:$//' `;
do
    echo setting $i to affine for core zero
    echo 1 > /proc/irq/$i/smp_affinity
done

#Move all rcu tasks to core 0.
for i in `pgrep rcu`; do taskset -pc 0 $i; done

#Change realtime attribute of all rcu tasks to SCHED_OTHER and priority 0
for i in `pgrep rcu`; do chrt -v -o -p 0 $i; done

#Change realtime attribute of all tasks on core 1 to SCHED_OTHER and priority 0
for i in `pgrep /1`; do chrt -v -o -p 0 $i; done

#Change realtime attribute of all tasks to SCHED_OTHER and priority 0
for i in `ps -A -o pid`; do chrt -v -o -p 0 $i; done

echo disabling timer migration
echo 0 > /proc/sys/kernel/timer_migration