Hi Guys,
As i'm working on DM385 IPNC RDK 3.5, i have to optimize kernel load modules after some initial application running, all the modules name which can be modprobe from etc/modules is removed so modutils.sh will load initially only necessary modules, i have removed wifi related/dependent modules to avoid loading at filesystem initialization but some how wifi module still loading at initial stage only. after putting some debug log in rcS run level script, wifi module is loading from S03udev, can anyone check and tell me how to avoid loading of wifi modules.
NOTE: R8.4 wl18xx wifi modules is builded from external source. merge into my filesystem.
i'm attaching S03udev file please have a look.
#!/bin/sh -e
### BEGIN INIT INFO
# Provides: udev
# Required-Start: mountvirtfs
# Required-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Start udevd, populate /dev and load drivers.
### END INIT INFO
export TZ=/etc/localtime
[ -d /sys/class ] || exit 1
[ -r /proc/mounts ] || exit 1
[ -x /sbin/udevd ] || exit 1
[ -f /etc/default/udev ] && . /etc/default/udev
[ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
kill_udevd() {
if [ -x /sbin/pidof ]; then
pid=`/sbin/pidof -x udevd`
[ -n "$pid" ] && kill $pid
fi
}
export ACTION=add
# propagate /dev from /sys
echo "Starting udev"
# mount the tmpfs on /dev, if not already done
LANG=C awk "\$2 == \"/dev\" && \$3 == \"tmpfs\" { exit 1 }" /proc/mounts && {
mount -n -o mode=0755,size=1M,nr_inodes=8192 -t tmpfs none "/dev"
mkdir -m 0755 /dev/pts
mkdir -m 1777 /dev/shm
}
if [ "$DEVCACHE" != "" ]; then
# Invalidate udev cache if the kernel or its bootargs/cmdline have changed
[ -x /bin/uname ] && /bin/uname -mrspv > /tmp/uname || touch /tmp/uname
[ -r /proc/cmdline ] && cat /proc/cmdline > /tmp/cmdline || touch /tmp/cmdline
[ -r /proc/devices ] && cat /proc/devices > /tmp/devices || touch /tmp/devices
[ -r /proc/atags ] && cat /proc/atags > /tmp/atags || touch /tmp/atags
if [ -e $DEVCACHE ] && \
cmp -s /tmp/uname /etc/udev/saved.uname && \
cmp -s /tmp/cmdline /etc/udev/saved.cmdline && \
cmp -s /tmp/devices /etc/udev/saved.devices && \
cmp -s /tmp/atags /etc/udev/saved.atags; then
(cd /; tar xf $DEVCACHE > /dev/null 2>&1)
not_first_boot=1
fi
fi
if [ ! -e "/lib/modules/$(uname -r)"/modules.dep ] ; then
mkdir -p /lib/modules/$(uname -r)
depmod -ae
fi
# make_extra_nodes
kill_udevd > "/dev/null" 2>&1
# trigger the sorted events
echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
/sbin/udevd -d
/sbin/udevadm control --env STARTUP=1
if [ "$not_first_boot" != "" ];then
/sbin/udevadm trigger --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux --subsystem-nomatch=platform
(/sbin/udevadm settle --timeout=8; /sbin/udevadm control --env STARTUP=)&
else
/sbin/udevadm trigger
/sbin/udevadm settle
fi
exit 0
I believe udevadm trigger is starting the wifi module,
/sbin/udevadm trigger --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux --subsystem-nomatch=platform
(/sbin/udevadm settle --timeout=8; /sbin/udevadm control --env STARTUP=)&
to avoid udeveadm trigger to start wifi i have added --subsystem-nomatch=net but it is of no use. can anyone suggest how to avoid udevadm triggering.
Thanks & regards,
Ganesh
