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#!/bin/bash | |
typeset -i core_id | |
typeset -i sibling_id | |
typeset -i state | |
for i in /sys/devices/system/cpu/cpu[0-9]*; do | |
core_id="${i##*cpu}" | |
sibling_id="-1" | |
if [ -f ${i}/topology/thread_siblings_list ]; then | |
sibling_id="$(cut -d',' -f1 ${i}/topology/thread_siblings_list)" | |
fi | |
if [ $core_id -ne $sibling_id ]; then | |
state="$(<${i}/online)" | |
echo -n "$((1-state))" > "${i}/online" | |
echo "switched ${i}/online to $((1-state))" | |
fi | |
done |
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