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#!/bin/bash
#
# Testcase: Reload the drm module
#
# ... we've broken this way too often :(
#
SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
. $SOURCE_DIR/drm_lib.sh
# no other drm service should be running, so we can just unbind
# return 0 if module by name $1 is loaded according to lsmod
function mod_loaded()
{
lsmod | grep -w "^$1" &> /dev/null
}
function reload() {
local snd_hda_intel_unloaded
echo Reloading i915.ko with $*
# we must kick away fbcon (but only fbcon)
for vtcon in /sys/class/vtconsole/vtcon*/ ; do
if grep "frame buffer device" $vtcon/name > /dev/null ; then
echo unbinding $vtcon: `cat $vtcon/name`
echo 0 > $vtcon/bind
fi
done
# The sound driver uses our power well
pkill alsactl
snd_hda_intel_unloaded=0
if mod_loaded snd_hda_intel; then
rmmod snd_hda_intel && snd_hda_intel_unloaded=1
fi
#ignore errors in ips - gen5 only
rmmod intel_ips &> /dev/null
rmmod i915 || return $IGT_EXIT_SKIP
#ignore errors in intel-gtt, often built-in
rmmod intel-gtt &> /dev/null
# drm may be used by other devices (nouveau, radeon, udl, etc)
rmmod drm_kms_helper &> /dev/null
rmmod drm &> /dev/null
if mod_loaded i915; then
echo WARNING: i915.ko still loaded!
return $IGT_EXIT_FAILURE
else
echo module successfully unloaded
fi
modprobe i915 $*
if [ -f /sys/class/vtconsole/vtcon1/bind ]; then
echo 1 > /sys/class/vtconsole/vtcon1/bind
fi
modprobe -q snd_hda_intel || return $snd_hda_intel_unloaded
}
function finish_load() {
# does the device exist?
if $SOURCE_DIR/gem_alive > /dev/null ; then
echo "module successfully loaded again"
else
echo "failed to reload module successfully"
return $IGT_EXIT_FAILURE
fi
# then try to run something
if ! $SOURCE_DIR/gem_exec_store > /dev/null ; then
echo "failed to execute a simple batch after reload"
return $IGT_EXIT_FAILURE
fi
return $IGT_EXIT_SUCCESS
}
reload || exit $?
finish_load || exit $?
# Repeat the module reload trying to to generate faults
for i in $(seq 1 4); do
reload inject_load_failure=$i
done
reload || exit $?
finish_load
exit $?
|
