1*4882a593Smuzhiyun#!/bin/sh 2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunCPUS_ONLINE=$(lscpu --online -p=cpu|grep -v -e '#') 5*4882a593Smuzhiyun#use last CPU for host. Why not the first? 6*4882a593Smuzhiyun#many devices tend to use cpu0 by default so 7*4882a593Smuzhiyun#it tends to be busier 8*4882a593SmuzhiyunHOST_AFFINITY=$(echo "${CPUS_ONLINE}"|tail -n 1) 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun#run command on all cpus 11*4882a593Smuzhiyunfor cpu in $CPUS_ONLINE 12*4882a593Smuzhiyundo 13*4882a593Smuzhiyun #Don't run guest and host on same CPU 14*4882a593Smuzhiyun #It actually works ok if using signalling 15*4882a593Smuzhiyun if 16*4882a593Smuzhiyun (echo "$@" | grep -e "--sleep" > /dev/null) || \ 17*4882a593Smuzhiyun test $HOST_AFFINITY '!=' $cpu 18*4882a593Smuzhiyun then 19*4882a593Smuzhiyun echo "GUEST AFFINITY $cpu" 20*4882a593Smuzhiyun "$@" --host-affinity $HOST_AFFINITY --guest-affinity $cpu 21*4882a593Smuzhiyun fi 22*4882a593Smuzhiyundone 23*4882a593Smuzhiyunecho "NO GUEST AFFINITY" 24*4882a593Smuzhiyun"$@" --host-affinity $HOST_AFFINITY 25*4882a593Smuzhiyunecho "NO AFFINITY" 26*4882a593Smuzhiyun"$@" 27