#!/system/bin/sh
# imoseyon mods

# disable logger - performance boost & save memory (hopefully)
rm /dev/log/main

# file system speedups
busybox mount -o remount,noatime,barrier=0,nobh /system
busybox mount -o remount,noatime,barrier=0,nobh /data
busybox mount -o remount,noatime,barrier=0,nobh /cache

# aggressive memory management
echo "3000,4000,10000,10000,20000,20000" > /sys/module/lowmemorykiller/parameters/minfree

# overclock (example)
#sh /data/imoseyon/oc.sh

SAMPLING_RATE=$(busybox expr `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_transition_latency` \* 750 / 1000)
echo 95 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
echo $SAMPLING_RATE > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate

# sysctl tweaks
sysctl -p /data/imoseyon/sysctl.conf

# zipalign system if necessary (example)
# sh /data/imoseyon/zipalign_system.sh

# enable crond
# crond calls getpwnam (user database search)
mount -o remount,rw `grep /system /proc/mounts | cut -d' ' -f1` /system
echo "root:x:0:0::/data/cron:/system/bin/sh" > /etc/passwd
mount -o remount,ro `grep /system /proc/mounts | cut -d' ' -f1` /system
# crond has "/bin/sh" hardcoded
mount -o remount,rw rootfs /
ln -s /system/bin/ /bin
if [ ! -d /tmp ]; then
  mkdir /tmp
  mount -t tmpfs tmpfs /tmp
fi
mount -o remount,ro rootfs /
/system/xbin/startcron.sh

# clean-up - needed for some ROMs
pkill /system/bin/telnetd
mount -o remount,rw -t yaffs2 `grep /system /proc/mounts | cut -d' ' -f1` /system
rm /system/bin/pgrep
rm /system/bin/telnetd
rm /system/bin/crond
mount -o remount,ro -t yaffs2 `grep /system /proc/mounts | cut -d' ' -f1` /system


# sleep a while and then start killing annoying processes registered to zygote
# sleep 10
#sh /data/imoseyon/killapps.sh

# if swapfile exists, enable swap and adjust other settings
if [ -f /data/swap ]; then
  swapon /data/swap
  echo "100,200,20000,20000,20000,25000" > /sys/module/lowmemorykiller/parameters/minfree
  sysctl -w vm.swappiness=40
fi

# sd card speed boost
if [ -e /sys/devices/virtual/bdi/179:0/read_ahead_kb ]; then
  echo 1024 > /sys/devices/virtual/bdi/179:0/read_ahead_kb
fi