irqbalance: add support of interval and banirq

Added the ability to change sampling interval
and provide a list of IRQ's to ignore
via /etc/config/irqbalance

Signed-off-by: Marc Benoit <marcb62185@gmail.com>

utils/irqbalance/Makefile

@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=irqbalance
 PKG_VERSION:=1.6.0
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_PROTO:=git

utils/irqbalance/files/irqbalance.config

@@ -1,3 +1,10 @@
 config irqbalance 'irqbalance'
 	option enabled '0'
 
+	# The default value is 10 seconds
+	#option interval '10'
+
+	# List of IRQ's to ignore
+	#list banirq '36'
+	#list banirq '69'
+

utils/irqbalance/files/irqbalance.init

@@ -9,8 +9,19 @@ start_service() {
 	config_get_bool enabled irqbalance enabled 0
 	[ "$enabled" -gt 0 ] || return 0
 
+	# 10 is the default
+	config_get interval irqbalance interval 10
+
+	# A list of IRQ's to ignore
+	banirq=""
+	handle_banirq_value()
+	{
+		banirq="$banirq -i $1"
+	}
+	config_list_foreach irqbalance banirq handle_banirq_value
+
 	procd_open_instance "irqbalance"
-	procd_set_param command /usr/sbin/irqbalance -f
+	procd_set_param command /usr/sbin/irqbalance -f -t "$interval" "$banirq"
 	procd_set_param respawn
 	procd_close_instance
 }