This commit adds functionality to judgelitmus.sh to allow it to handle
both the "DATARACE" markers in the "Result:" comments in litmus tests
and the "Flag data-race" markers in LKMM output. For C-language tests,
if either marker is present, the other must also be as well, at least for
litmus tests having a "Result:" comment. If the LKMM output indicates
a data race, then failures of the Always/Sometimes/Never portion of the
"Result:" prediction are forgiven.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
---
tools/memory-model/scripts/judgelitmus.sh | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/tools/memory-model/scripts/judgelitmus.sh b/tools/memory-model/scripts/judgelitmus.sh
index ca9a19829d79..eaa2cc7d3b36 100755
--- a/tools/memory-model/scripts/judgelitmus.sh
+++ b/tools/memory-model/scripts/judgelitmus.sh
@@ -47,9 +47,27 @@ else
echo ' --- ' error: \"$LKMM_DESTDIR/$litmusout is not a readable file
exit 255
fi
+if grep -q '^Flag data-race$' "$LKMM_DESTDIR/$litmusout"
+then
+ datarace_modeled=1
+fi
if grep -q '^ \* Result: ' $litmus
then
outcome=`grep -m 1 '^ \* Result: ' $litmus | awk '{ print $3 }'`
+ if grep -m1 '^ \* Result: .* DATARACE' $litmus
+ then
+ datarace_predicted=1
+ fi
+ if test -n "$datarace_predicted" -a -z "$datarace_modeled" -a -z "$LKMM_HW_MAP_FILE"
+ then
+ echo '!!! Predicted data race not modeled' $litmus
+ exit 252
+ elif test -z "$datarace_predicted" -a -n "$datarace_modeled"
+ then
+ # Note that hardware models currently don't model data races
+ echo '!!! Unexpected data race modeled' $litmus
+ exit 253
+ fi
elif test -n "$LKMM_HW_MAP_FILE" && grep -q '^Observation' $LKMM_DESTDIR/$lkmmout > /dev/null 2>&1
then
outcome=`grep -m 1 '^Observation ' $LKMM_DESTDIR/$lkmmout | awk '{ print $3 }'`
@@ -114,7 +132,7 @@ elif grep '^Observation' $LKMM_DESTDIR/$litmusout | grep -q $outcome || test "$o
then
ret=0
else
- if test -n "$LKMM_HW_MAP_FILE" -a "$outcome" = Sometimes
+ if test \( -n "$LKMM_HW_MAP_FILE" -a "$outcome" = Sometimes \) -o -n "$datarace_modeled"
then
flag="--- Forgiven"
ret=0
--
2.17.1
