#!/bin/bash
set -ex

cd /var/run
p=serial-irq-priority-poke
rm -f $p
mkfifo -m 622 $p
exec 3<>$p

while read -n 1 <&3 dummy; do

    for proc in irq/4-serial sirq-timer/0 sirq-hrtimer/0 sirq-high/0; do

	ssd=`start-stop-daemon --stop -t -u root -n $proc`
	case "$ssd" in
	"Would send signal 15 to "*.)
		pid="${ssd##* }"
		pid="${pid%.}"
		chrt -p 55 $pid ||:
		;;
	*) echo >&2 "start-stop-daemon said $ssd ?"; continue;;
	esac

    done

done