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ihk_os_create_pseudofs(): Add a function to prepare /proc and /sys

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This commit is contained in:
Masamichi Takagi
2017-08-22 19:44:33 +09:00
parent c5d71c325d
commit a1af7edd6e
7 changed files with 1705 additions and 2716 deletions
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110
arch/x86/tools/mcreboot-smp-x86.sh.in
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@ -239,17 +239,7 @@ fi
# Remove mcoverlay if loaded
if [ "$enable_mcoverlay" == "yes" ]; then
if grep mcoverlay /proc/modules &>/dev/null; then
if [ "`cat /proc/mounts | grep /tmp/mcos/mcos0_sys`" != "" ]; then umount -l /tmp/mcos/mcos0_sys; fi
if [ "`cat /proc/mounts | grep /tmp/mcos/mcos0_proc`" != "" ]; then umount -l /tmp/mcos/mcos0_proc; fi
if [ "`cat /proc/mounts | grep /tmp/mcos/linux_proc`" != "" ]; then umount -l /tmp/mcos/linux_proc; fi
if [ "`cat /proc/mounts | grep /tmp/mcos`" != "" ]; then umount -l /tmp/mcos; fi
if [ -e /tmp/mcos ]; then rm -rf /tmp/mcos; fi
if ! rmmod mcoverlay 2>/dev/null; then
echo "error: removing mcoverlay" >&2
exit 1
fi
fi
. ${SBINDIR}/mcoverlay-destroy.sh
fi
# Stop irqbalance
@ -419,103 +409,7 @@ fi
# Overlay /proc, /sys with McKernel specific contents
if [ "$enable_mcoverlay" == "yes" ]; then
if [ ! -e /tmp/mcos ]; then
mkdir -p /tmp/mcos;
fi
if ! mount -t tmpfs tmpfs /tmp/mcos; then
echo "error: mount /tmp/mcos" >&2
error_exit "tmp_mcos_created"
fi
if [ ! -e /tmp/mcos/linux_proc ]; then
mkdir -p /tmp/mcos/linux_proc;
fi
if ! mount --bind /proc /tmp/mcos/linux_proc; then
echo "error: mount /tmp/mcos/linux_proc" >&2
error_exit "tmp_mcos_mounted"
fi
if ! taskset -c 0 insmod ${KMODDIR}/mcoverlay.ko 2>/dev/null; then
echo "error: inserting mcoverlay.ko" >&2
error_exit "linux_proc_bind_mounted"
fi
while [ ! -e /proc/mcos0 ]
do
sleep 0.1
done
if [ ! -e /tmp/mcos/mcos0_proc ]; then
mkdir -p /tmp/mcos/mcos0_proc;
fi
if [ ! -e /tmp/mcos/mcos0_proc_upper ]; then
mkdir -p /tmp/mcos/mcos0_proc_upper;
fi
if [ ! -e /tmp/mcos/mcos0_proc_work ]; then
mkdir -p /tmp/mcos/mcos0_proc_work;
fi
if ! mount -t mcoverlay mcoverlay -o lowerdir=/proc/mcos0:/proc,upperdir=/tmp/mcos/mcos0_proc_upper,workdir=/tmp/mcos/mcos0_proc_work,nocopyupw,nofscheck /tmp/mcos/mcos0_proc; then
echo "error: mounting /tmp/mcos/mcos0_proc" >&2
error_exit "mcoverlayfs_loaded"
fi
# TODO: How de we revert this in case of failure??
mount --make-rprivate /proc
while [ ! -e /sys/devices/virtual/mcos/mcos0/sys/setup_complete ]
do
sleep 0.1
done
if [ ! -e /tmp/mcos/mcos0_sys ]; then
mkdir -p /tmp/mcos/mcos0_sys;
fi
if [ ! -e /tmp/mcos/mcos0_sys_upper ]; then
mkdir -p /tmp/mcos/mcos0_sys_upper;
fi
if [ ! -e /tmp/mcos/mcos0_sys_work ]; then
mkdir -p /tmp/mcos/mcos0_sys_work;
fi
if ! mount -t mcoverlay mcoverlay -o lowerdir=/sys/devices/virtual/mcos/mcos0/sys:/sys,upperdir=/tmp/mcos/mcos0_sys_upper,workdir=/tmp/mcos/mcos0_sys_work,nocopyupw,nofscheck /tmp/mcos/mcos0_sys; then
echo "error: mount /tmp/mcos/mcos0_sys" >&2
error_exit "mcos_proc_mounted"
fi
# TODO: How de we revert this in case of failure??
mount --make-rprivate /sys
touch /tmp/mcos/mcos0_proc/mckernel
rm -rf /tmp/mcos/mcos0_sys/setup_complete
# Hide NUMA related files which are outside the LWK partition
for cpuid in `find /sys/devices/system/cpu/* -maxdepth 0 -name "cpu[0123456789]*" -printf "%f "`; do
if [ ! -e "/sys/devices/virtual/mcos/mcos0/sys/devices/system/cpu/$cpuid" ]; then
rm -rf /tmp/mcos/mcos0_sys/devices/system/cpu/$cpuid
rm -rf /tmp/mcos/mcos0_sys/bus/cpu/devices/$cpuid
rm -rf /tmp/mcos/mcos0_sys/bus/cpu/drivers/processor/$cpuid
else
for nodeid in `find /sys/devices/system/cpu/$cpuid/* -maxdepth 0 -name "node[0123456789]*" -printf "%f "`; do
if [ ! -e "/sys/devices/virtual/mcos/mcos0/sys/devices/system/cpu/$cpuid/$nodeid" ]; then
rm -f /tmp/mcos/mcos0_sys/devices/system/cpu/$cpuid/$nodeid
fi
done
fi
done
for nodeid in `find /sys/devices/system/node/* -maxdepth 0 -name "node[0123456789]*" -printf "%f "`; do
if [ ! -e "/sys/devices/virtual/mcos/mcos0/sys/devices/system/node/$nodeid" ]; then
rm -rf /tmp/mcos/mcos0_sys/devices/system/node/$nodeid/*
rm -rf /tmp/mcos/mcos0_sys/bus/node/devices/$nodeid
else
# Delete non-existent symlinks
for cpuid in `find /sys/devices/system/node/$nodeid/* -maxdepth 0 -name "cpu[0123456789]*" -printf "%f "`; do
if [ ! -e "/sys/devices/virtual/mcos/mcos0/sys/devices/system/node/$nodeid/$cpuid" ]; then
rm -f /tmp/mcos/mcos0_sys/devices/system/node/$nodeid/$cpuid
fi
done
rm -f /tmp/mcos/mcos0_sys/devices/system/node/$nodeid/memory*
fi
done
rm -f /tmp/mcos/mcos0_sys/devices/system/node/has_*
for cpuid in `find /sys/bus/cpu/devices/* -maxdepth 0 -name "cpu[0123456789]*" -printf "%f "`; do
if [ ! -e "/sys/devices/virtual/mcos/mcos0/sys/bus/cpu/devices/$cpuid" ]; then
rm -rf /tmp/mcos/mcos0_sys/bus/cpu/devices/$cpuid
fi
done
. ${SBINDIR}/mcoverlay-create.sh
fi
# Start irqbalance with CPUs and IRQ for McKernel banned