c91357cdf5
Helper state file for cpu-partitioning script was moved to /run/tuned. Code for flags manipulation has been simplified. The /run/tuned directory is explicitly cleared upon uninstallation of Tuned to get rid of all leftovers / helper files before the reboot. Added STORAGE_PERSISTENT variable pointing to /var/lib/tuned into functions to be consistent. Related: rhbz#1497182 Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>
70 lines
1.8 KiB
Bash
Executable file
70 lines
1.8 KiB
Bash
Executable file
#!/bin/sh
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. /usr/lib/tuned/functions
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rebalance_cpus_file=$STORAGE/no-rebalance-cpus.txt
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change_sd_balance_bit()
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{
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local set_bit=$1
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local flags_cur=
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local file=
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local cpu=
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for cpu in $(cat $rebalance_cpus_file); do
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for file in $(find /proc/sys/kernel/sched_domain/cpu$cpu -name flags -print); do
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flags_cur=$(cat $file)
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if [ $set_bit -eq 1 ]; then
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flags_cur=$((flags_cur | 0x1))
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else
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flags_cur=$((flags_cur & 0xfffe))
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fi
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echo $flags_cur > $file
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done
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done
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}
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disable_rebalance_domains()
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{
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change_sd_balance_bit 0
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}
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enable_rebalance_domains()
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{
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change_sd_balance_bit 1
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}
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start() {
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mkdir -p "${TUNED_tmpdir}/etc/systemd"
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mkdir -p "${TUNED_tmpdir}/usr/lib/dracut/hooks/pre-udev"
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cp /etc/systemd/system.conf "${TUNED_tmpdir}/etc/systemd/"
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cp 00-tuned-pre-udev.sh "${TUNED_tmpdir}/usr/lib/dracut/hooks/pre-udev/"
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python /usr/libexec/tuned/defirqaffinity.py "remove" "$TUNED_isolated_cores_expanded" &&
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sed -i '/^IRQBALANCE_BANNED_CPUS=/d' /etc/sysconfig/irqbalance
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echo "IRQBALANCE_BANNED_CPUS=$TUNED_isolated_cpumask" >>/etc/sysconfig/irqbalance
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setup_kvm_mod_low_latency
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disable_ksm
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echo "$TUNED_no_balance_cores_expanded" | sed 's/,/ /g' > $rebalance_cpus_file
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disable_rebalance_domains
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return "$?"
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}
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stop() {
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python /usr/libexec/tuned/defirqaffinity.py "add" "$TUNED_isolated_cores_expanded"
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if [ "$1" = "full_rollback" ]
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then
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sed -i '/^IRQBALANCE_BANNED_CPUS=/d' /etc/sysconfig/irqbalance
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teardown_kvm_mod_low_latency
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fi
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enable_ksm
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enable_rebalance_domains
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return "$?"
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}
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verify() {
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python /usr/libexec/tuned/defirqaffinity.py "verify" "$TUNED_isolated_cores_expanded"
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return "$?"
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}
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process $@
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