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igt/drv_module_reload_basic: Rinse and repeat with addition module parameters

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An idea for testing failure paths along module load is to use a parameter
to perform fault injection. This rudimentary framework should get us
started.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-03-11 21:25:48 +00:00
parent 9eacbd2acd
commit f14d56c42d
1 changed files with 61 additions and 45 deletions
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106
tests/drv_module_reload_basic
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@ -10,51 +10,67 @@ SOURCE_DIR="$( dirname "${BASH_SOURCE[0]}" )"
# no other drm service should be running, so we can just unbind
# 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
function reload() {
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
rmmod snd_hda_intel &> /dev/null
#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 lsmod | grep i915 &> /dev/null ; then
echo WARNING: i915.ko still loaded!
return $IGT_EXIT_FAILURE
else
echo module successfully unloaded
fi
modprobe i915 $*
echo 1 > /sys/class/vtconsole/vtcon1/bind
modprobe snd_hda_intel
# 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 $?
# Repeat the module reload trying to to generate faults
fault=1
for i in $(seq 0 31); do
reload i915.fault_injection=$fault
fault=$(($fault * 2))
done
# The sound driver uses our power well
pkill alsactl
rmmod snd_hda_intel &> /dev/null
#ignore errors in ips - gen5 only
rmmod intel_ips &> /dev/null
rmmod i915
#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 lsmod | grep i915 &> /dev/null ; then
echo WARNING: i915.ko still loaded!
exit $IGT_EXIT_FAILURE
else
echo module successfully unloaded
fi
modprobe i915
echo 1 > /sys/class/vtconsole/vtcon1/bind
modprobe snd_hda_intel
# does the device exist?
if $SOURCE_DIR/gem_alive > /dev/null ; then
echo "module successfully loaded again"
else
echo "failed to reload module successfully"
exit $IGT_EXIT_FAILURE
fi
# then try to run something
if ! $SOURCE_DIR/gem_linear_blits --run-subtest basic > /dev/null ; then
echo "failed to execute a simple batch after reload"
exit $IGT_EXIT_FAILURE
fi
exit $IGT_EXIT_SUCCESS
reload
exit $?