#! /bin/sh
# Copyright (c) 2015 HUAWEI TECHNOLOGIES CO., LTD.
# All rights reserved.

# Check for missing binaries (stale symlinks should not happen)
IRQBALANCE_BIN=/usr/sbin/irqbalance
test -x $IRQBALANCE_BIN || exit 5

IRQBALANCE_PIDFILE="/var/run/irqbalance.pid"
IRQBALANCE_CONFIG_FILE="/etc/sysconfig/irqbalance"

if [ -f $IRQBALANCE_CONFIG_FILE ]; then
    . $IRQBALANCE_CONFIG_FILE
fi

# Note: There maybe IRQBALANCE_ARGS env in $IRQBALANCE_CONFIG_FILE
# So, here we should add this.
IRQBALANCE_ARGS=$IRQBALANCE_ARGS" --pid=$IRQBALANCE_PIDFILE"

if [ -n "$IRQBALANCE_BANNED_CPUS" ]; then
    export IRQBALANCE_BANNED_CPUS
fi

if [ -n "$IRQBALANCE_BANNED_CPULIST" ]; then
    export IRQBALANCE_BANNED_CPULIST
fi

if [ "$IRQBALANCE_ONESHOT" != "auto" ]; then
    export IRQBALANCE_ONESHOT
fi

IRQS_BANNED="$IRQBALANCE_BANNED_INTERRUPTS"
if [ -n "$IRQBALANCE_BANNED_INTERRUPTS" ]; then
    export IRQBALANCE_BANNED_INTERRUPTS
fi

for ban_irq in $IRQS_BANNED;
do
    if [ -z "${ban_irq//[0-9]/}" ];then
        IRQBALANCE_ARGS=$IRQBALANCE_ARGS" --banirq=$ban_irq"
    else
        echo "Bad irq number $ban_irq, please check config file!"
        exit 1
    fi
done

$IRQBALANCE_BIN $IRQBALANCE_ARGS