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tests/drv_missed_irq_hang: Wait harder

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Improve the busy-load for triggering a wait-on-interrupt and check for
extraneous missed-interrupts before and after our tests.

References: https://bugs.freedesktop.org/show_bug.cgi?id=88437
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-03-02 10:11:14 +00:00
parent 02befb8b03
commit a3de0bc9df
1 changed files with 18 additions and 11 deletions
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29
tests/drv_missed_irq_hang
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@ -11,16 +11,11 @@ oldpath=`pwd`
cd $i915_dfs_path
function blt_wait {
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 16384) > /dev/null
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 65536) > /dev/null
(cd $oldpath; $SOURCE_DIR/gem_exec_blt 262144) > /dev/null
$oldpath/$SOURCE_DIR/../benchmarks/gem_blt -r 1 -b 64 -t 1 -S > /dev/null
}
function check_for_missed_irq {
if test `cat i915_ring_missed_irq` = 0x00000000; then
echo "missed interrupts undetected"
exit $IGT_EXIT_FAILURE
fi
test `cat i915_ring_missed_irq` != 0x00000000
}
function check_for_hang {
@ -37,6 +32,11 @@ fi
# clear error state first
echo > i915_error_state
blt_wait
if check_for_missed_irq; then
echo "missed interrupts detected before starting test"
exit $IGT_EXIT_SKOP
fi
check_for_hang
echo 0xf > i915_ring_test_irq
@ -47,10 +47,10 @@ if test `cat i915_ring_test_irq` != 0x0000000f; then
fi
blt_wait
check_for_missed_irq
check_for_hang
blt_wait
if ! check_for_missed_irq; then
echo "missed interrupts undetected"
exit $IGT_EXIT_FAILURE
fi
check_for_hang
echo 0 > i915_ring_test_irq
@ -70,4 +70,11 @@ if test `cat i915_ring_missed_irq` != 0x00000000; then
exit $IGT_EXIT_FAILURE
fi
blt_wait
if check_for_missed_irq; then
echo "missed interrupts detected afterwards"
exit $IGT_EXIT_FAILURE
fi
check_for_hang
exit $IGT_EXIT_SUCCESS