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|
#!/bin/bash
SYSFS=
prerequisite()
{
msg="skip all tests:"
if [ $UID != 0 ]; then
echo $msg must be run as root >&2
exit 0
fi
SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
if [ ! -d "$SYSFS" ]; then
echo $msg sysfs is not mounted >&2
exit 0
fi
if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
echo $msg cpu hotplug is not supported >&2
exit 0
fi
}
#
# list all hot-pluggable CPUs
#
hotpluggable_cpus()
{
local state=${1:-.\*}
for cpu in $SYSFS/devices/system/cpu/cpu*; do
if [ -f $cpu/online ] && grep -q $state $cpu/online; then
echo ${cpu##/*/cpu}
fi
done
}
hotplaggable_offline_cpus()
{
hotpluggable_cpus 0
}
hotpluggable_online_cpus()
{
hotpluggable_cpus 1
}
cpu_is_online()
{
grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
}
cpu_is_offline()
{
grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
}
online_cpu()
{
echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
}
offline_cpu()
{
echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
}
online_cpu_expect_success()
{
local cpu=$1
if ! online_cpu $cpu; then
echo $FUNCNAME $cpu: unexpected fail >&2
elif ! cpu_is_online $cpu; then
echo $FUNCNAME $cpu: unexpected offline >&2
fi
}
online_cpu_expect_fail()
{
local cpu=$1
if online_cpu $cpu 2> /dev/null; then
echo $FUNCNAME $cpu: unexpected success >&2
elif ! cpu_is_offline $cpu; then
echo $FUNCNAME $cpu: unexpected online >&2
fi
}
offline_cpu_expect_success()
{
local cpu=$1
if ! offline_cpu $cpu; then
echo $FUNCNAME $cpu: unexpected fail >&2
elif ! cpu_is_offline $cpu; then
echo $FUNCNAME $cpu: unexpected offline >&2
fi
}
offline_cpu_expect_fail()
{
local cpu=$1
if offline_cpu $cpu 2> /dev/null; then
echo $FUNCNAME $cpu: unexpected success >&2
elif ! cpu_is_online $cpu; then
echo $FUNCNAME $cpu: unexpected offline >&2
fi
}
error=-12
priority=0
while getopts e:hp: opt; do
case $opt in
e)
error=$OPTARG
;;
h)
echo "Usage $0 [ -e errno ] [ -p notifier-priority ]"
exit
;;
p)
priority=$OPTARG
;;
esac
done
if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
echo "error code must be -4095 <= errno < 0" >&2
exit 1
fi
prerequisite
#
# Online all hot-pluggable CPUs
#
for cpu in `hotplaggable_offline_cpus`; do
online_cpu_expect_success $cpu
done
#
# Offline all hot-pluggable CPUs
#
for cpu in `hotpluggable_online_cpus`; do
offline_cpu_expect_success $cpu
done
#
# Online all hot-pluggable CPUs again
#
for cpu in `hotplaggable_offline_cpus`; do
online_cpu_expect_success $cpu
done
#
# Test with cpu notifier error injection
#
DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
prerequisite_extra()
{
msg="skip extra tests:"
/sbin/modprobe -q -r cpu-notifier-error-inject
/sbin/modprobe -q cpu-notifier-error-inject priority=$priority
if [ ! -d "$DEBUGFS" ]; then
echo $msg debugfs is not mounted >&2
exit 0
fi
if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
echo $msg cpu-notifier-error-inject module is not available >&2
exit 0
fi
}
prerequisite_extra
#
# Offline all hot-pluggable CPUs
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
for cpu in `hotpluggable_online_cpus`; do
offline_cpu_expect_success $cpu
done
#
# Test CPU hot-add error handling (offline => online)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
for cpu in `hotplaggable_offline_cpus`; do
online_cpu_expect_fail $cpu
done
#
# Online all hot-pluggable CPUs
#
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
for cpu in `hotplaggable_offline_cpus`; do
online_cpu_expect_success $cpu
done
#
# Test CPU hot-remove error handling (online => offline)
#
echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
for cpu in `hotpluggable_online_cpus`; do
offline_cpu_expect_fail $cpu
done
echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
/sbin/modprobe -q -r cpu-notifier-error-inject
|
