From 83e5e230433070a8555d5b0b830021b45a09674e Mon Sep 17 00:00:00 2001
From: coolsnowwolf <coolsnowwolf@gmail.com>
Date: Wed, 13 Sep 2017 23:35:05 +0800
Subject: [PATCH] set cpu affinity for linksys wrt1200/1900/3200

---
 .../base-files/etc/init.d/set_cpu_affinity    | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100755 target/linux/mvebu/base-files/etc/init.d/set_cpu_affinity

diff --git a/target/linux/mvebu/base-files/etc/init.d/set_cpu_affinity b/target/linux/mvebu/base-files/etc/init.d/set_cpu_affinity
new file mode 100755
index 000000000..bd8d5fef5
--- /dev/null
+++ b/target/linux/mvebu/base-files/etc/init.d/set_cpu_affinity
@@ -0,0 +1,53 @@
+#!/bin/sh /etc/rc.common
+
+START=99
+
+set_irq_affinity() {
+	local name="$1"
+	local val="$2"
+  
+case "$name" in
+wifi0)
+  	local irq_wifi0=`grep -E -m1 'mwlwifi' /proc/interrupts | cut -d: -f1 | tail -n1 | tr -d ' '`
+	[ -n "$irq_wifi0" ] || echo "$name irq not found."
+	echo "$val" > "/proc/irq/$irq_wifi0/smp_affinity"
+	;;
+wifi1)
+  	local irq_wifi1=`grep -E -m2 'mwlwifi' /proc/interrupts | cut -d: -f1 | tail -n1 | tr -d ' '`
+	[ -n "$irq_wifi1" ] || echo "$name irq not found."
+	echo "$val" > "/proc/irq/$irq_wifi1/smp_affinity"
+	;;
+wifi2)
+  	local irq_wifi1=`grep -E -m3 'mwlwifi' /proc/interrupts | cut -d: -f1 | tail -n1 | tr -d ' '`
+	[ -n "$irq_wifi1" ] || echo "$name irq not found."
+	echo "$val" > "/proc/irq/$irq_wifi1/smp_affinity"
+	;;
+*)
+  	local irq=`grep -m 1 "$name" /proc/interrupts | cut -d: -f1 | sed 's, *,,'`
+	[ -n "$irq" ] || echo "$name irq not found."
+	echo "$val" > "/proc/irq/$irq/smp_affinity"
+	;;
+esac
+}
+
+start() {
+
+. /lib/functions.sh
+
+local board=$(board_name)
+
+case "$board" in
+armada-385-linksys-caiman |\
+armada-385-linksys-cobra |\
+armada-385-linksys-rango |\
+armada-385-linksys-shelby |\
+armada-xp-linksys-mamba)
+  set_irq_affinity eth0 2
+	set_irq_affinity eth1 2
+	set_irq_affinity wifi0 2
+	;;
+*)
+	echo "Unsupported hardware. CPU affinity is not adjusted."
+	;;
+esac
+}