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#!/bin/bash
#
# CPU helpers
# protect against multiple inclusion
if [ $FILE_CPU ]; then
return 0
else
FILE_CPU=DONE
fi
source cpufreq.sh
offline_cpu()
{
echo 0 > /sys/devices/system/cpu/$1/online
}
online_cpu()
{
echo 1 > /sys/devices/system/cpu/$1/online
}
offline_online_cpu()
{
offline_cpu $1
online_cpu $1
}
# Offline + online CPUs
# param: number of times we want to run the loop
hotplug_1_by_1()
{
echo "** Test: Running ${FUNCNAME[0]} for $1 loops **"
echo ""
for i in `seq 1 $1`; do
for_each_non_boot_cpu offline_online_cpu
done
echo "------------------------------------------------"
echo ""
}
# Offline all CPUs, followed by online all CPUs
# param: number of times we want to run the loop
hotplug_together()
{
echo "** Test: Running ${FUNCNAME[0]} for $1 loops **"
echo ""
for i in `seq 1 $1`; do
for_each_non_boot_cpu offline_cpu
for_each_non_boot_cpu online_cpu
done
echo "------------------------------------------------"
echo ""
}
for_each_cpu() {
cpus=$(ls $CPU_PATH | grep "cpu[0-9].*")
for cpu in $cpus; do
$@ $cpu
done
}
for_each_cpu_concurrent() {
cpus=$(ls $CPU_PATH | grep "cpu[0-9].*")
for cpu in $cpus; do
$@ $cpu &
done
}
for_each_non_boot_cpu() {
cpus=$(ls $CPU_PATH | grep "cpu[1-9].*")
for cpu in $cpus; do
$@ $cpu
done
}
# Prints warning for all CPUs with missing cpufreq directory
print_unmanaged_cpus()
{
for_each_cpu cpu_should_have_cpufreq_directory
}
# Counts CPUs with cpufreq directories
count_cpufreq_managed_cpus()
{
count=0;
for cpu in `ls $CPU_PATH | grep "cpu[0-9].*"`; do
if [ -d /sys/devices/system/cpu/$cpu/cpufreq ]; then
let count=count+1;
fi
done
echo $count;
}
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