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ramips: mt7621: remove set-affinity script

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From https://github.com/openwrt/openwrt/pull/12280#issuecomment-1489279860
On Ethernet and WLAN, NAPI is threaded for all queues. This means that the
processing work is not stuck on the CPU that fired the IRQ. Under heavy
load, IRQs get disabled anyway, so it should not matter at all which CPUs
the IRQs fire on.

Basic testing indicates this to be true. There's no speedup or slowdown.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
This commit is contained in:
Rosen Penev 2023-03-28 15:29:19 -07:00 committed by Hauke Mehrtens
parent 787ecdf66d
commit 37dbe30215
1 changed files with 0 additions and 19 deletions
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19
target/linux/ramips/mt7621/base-files/etc/init.d/set-irq-affinity
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@ -1,19 +0,0 @@
#!/bin/sh /etc/rc.common
START=99
start() {
if grep -q 'processor.*: 2' /proc/cpuinfo; then
mask=4
elif grep -q 'processor.*: 1' /proc/cpuinfo; then
mask=2
else
return
fi
for irq in $(grep "mt76..e" /proc/interrupts | cut -d: -f1 | sed 's, *,,')
do
echo "$mask" > "/proc/irq/$irq/smp_affinity"
[ $mask = 4 ] && mask=8
done
}