4a8e64994e
Provide irqbalance_banned_cpus_{setup|clear} for tuning irqbalance.
Use them in cpu-partitioning.
Signed-off-by: Peter Xu <peterx@redhat.com>
62 lines
1.4 KiB
Bash
Executable file
62 lines
1.4 KiB
Bash
Executable file
#!/bin/sh
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. /usr/lib/tuned/functions
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no_balance_cpus_file=$STORAGE/no-balance-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 $no_balance_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 > $file
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done
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done
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}
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disable_balance_domains()
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{
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change_sd_balance_bit 0
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}
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enable_balance_domains()
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{
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change_sd_balance_bit 1
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}
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start() {
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mkdir -p "${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 "${TUNED_tmpdir}/usr/lib/dracut/hooks/pre-udev/"
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irqbalance_banned_cpus_setup "$TUNED_isolated_cpumask"
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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' > $no_balance_cpus_file
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disable_balance_domains
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return "$?"
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}
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stop() {
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if [ "$1" = "full_rollback" ]
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then
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irqbalance_banned_cpus_clear
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teardown_kvm_mod_low_latency
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enable_ksm
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fi
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enable_balance_domains
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return "$?"
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}
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process $@
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