From ad25cfb6b8a282e47344fba59f42af61e115a8df Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Tue, 9 Jan 2024 11:21:11 +0100 Subject: [PATCH] qualcommax: add SMP affinity script By default Linux will default to most IRQ-s being mapped to core 0 which during high loads will completely swamp the core 0, so lets add the widely used script that has been floating around forums for a long time to try and optimize the IRQ mapping a bit. Signed-off-by: Robert Marko --- .../base-files/etc/init.d/smp_affinity | 36 +++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100755 target/linux/qualcommax/ipq807x/base-files/etc/init.d/smp_affinity diff --git a/target/linux/qualcommax/ipq807x/base-files/etc/init.d/smp_affinity b/target/linux/qualcommax/ipq807x/base-files/etc/init.d/smp_affinity new file mode 100755 index 0000000000..05d13fff63 --- /dev/null +++ b/target/linux/qualcommax/ipq807x/base-files/etc/init.d/smp_affinity @@ -0,0 +1,36 @@ +#!/bin/sh /etc/rc.common + +START=93 + +enable_affinity_ipq807x() { + set_affinity() { + irq=$(awk "/$1/{ print substr(\$1, 1, length(\$1)-1); exit }" /proc/interrupts) + [ -n "$irq" ] && echo $2 > /proc/irq/$irq/smp_affinity + } + + # assign 4 rx interrupts to each core + set_affinity 'reo2host-destination-ring1' 1 + set_affinity 'reo2host-destination-ring2' 2 + set_affinity 'reo2host-destination-ring3' 4 + set_affinity 'reo2host-destination-ring4' 8 + + # assign 3 tcl completions to last 3 CPUs + set_affinity 'wbm2host-tx-completions-ring1' 2 + set_affinity 'wbm2host-tx-completions-ring2' 4 + set_affinity 'wbm2host-tx-completions-ring3' 8 + + # assign 3 ppdu mac interrupts to last 3 cores + set_affinity 'ppdu-end-interrupts-mac1' 2 + set_affinity 'ppdu-end-interrupts-mac2' 4 + set_affinity 'ppdu-end-interrupts-mac3' 8 + + # assign lan/wan to core 4 + set_affinity 'edma_txcmpl' 8 + set_affinity 'edma_rxfill' 8 + set_affinity 'edma_rxdesc' 8 + set_affinity 'edma_misc' 8 +} + +boot() { + enable_affinity_ipq807x +} -- 2.30.2