irqbalance Update init script to remove duplicate spaces

I have some strange issues with irqbalance sometimes overwritin
smp_affinity values for banned/ignored IRQs. The issue is reproduceable
and is mitigated when I change theway how the irqbalance command line is
built. The only difference between the resulting command is that there
is only one space between the -t parameter and the first -i parameter
value.

Also see Irqbalance/irqbalance#297

Signed-off-by: Carsten Schuette <schuettecarsten@googlemail.com>

utils/irqbalance/Makefile

@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=irqbalance
 PKG_VERSION:=1.9.3
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/Irqbalance/irqbalance.git

utils/irqbalance/files/irqbalance.init

@@ -16,28 +16,44 @@ start_service() {
 	config_get_bool enabled irqbalance enabled 0
 	[ "$enabled" -gt 0 ] || return 0
 
-	# 2 is the default
 	config_get deepestcache irqbalance deepestcache 2
-
-	# 10 is the default
 	config_get interval irqbalance interval 10
-
-	# empty is the default
 	config_get banned_cpulist irqbalance banned_cpulist ''
+	config_get debug irqbalance debug 0
+
+	procd_open_instance "irqbalance"
+	if [ -n "$banned_cpulist" ]; then
+		procd_set_param env IRQBALANCE_BANNED_CPULIST="$banned_cpulist"
+	fi
+
+	procd_add_jail_mount_rw /proc
+	procd_set_param command /usr/sbin/irqbalance
+	procd_append_param command -f
 
-	# A list of IRQ's to ignore
-	banirq=""
+	# 2 is the default for deepestcache
+	if [ "$deepestcache" -ne 2 ]; then
+		procd_append_param command "-c $deepestcache"
+	fi
+
+	# 10 is the default for interval
+	if [ "$interval" -ne 2 ]; then
+		procd_append_param command "-t $interval"
+	fi
+
+	# add banned IRQs
 	handle_banirq_value()
 	{
-		banirq="$banirq -i $1"
+		procd_append_param command "-i $1"
 	}
 	config_list_foreach irqbalance banirq handle_banirq_value
 
-	procd_open_instance "irqbalance"
-	if [ -n "$banned_cpulist" ]; then
-		procd_set_param env IRQBALANCE_BANNED_CPULIST="$banned_cpulist"
+	# debug
+	if [ "$debug" -gt 0 ]; then
+		procd_append_param command -d
+		procd_set_param stdout 1
 	fi
-	procd_set_param command /usr/sbin/irqbalance -f -c "$deepestcache" -t "$interval" "$banirq"
+	procd_set_param stderr 1
+
 	procd_set_param respawn
 	procd_close_instance
 }