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rcutorture: Make srcu_lockdep.sh check reader-conflict handling

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Mixing different flavors of RCU readers is forbidden, for example, you
should not use srcu_read_lock() and srcu_read_lock_nmisafe() on the same
srcu_struct structure.  There are checks for this, but these checks are
not tested on a regular basis.  This commit therefore adds such tests
to srcu_lockdep.sh.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
This commit is contained in:
Paul E. McKenney
2025-01-22 15:59:30 -08:00
committed by Joel Fernandes
parent 31b7ce3d98
commit 75d8bf48a8
1 changed files with 31 additions and 0 deletions
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tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh
+31
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@@ -79,6 +79,37 @@ do
done
done
# Test lockdep-enabled testing of mixed SRCU readers.
for val in 0x1 0xf
do
err=
tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" --bootargs "rcutorture.reader_flavor=$val" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
ret=$?
mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
then
echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING disabled in rcutorture SRCU-P scenario"
nerrs=$((nerrs+1))
err=1
fi
if test "$val" -eq 0xf && test "$ret" -eq 0
then
err=1
echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test "$val" -eq 0x1 && test "$ret" -ne 0
then
err=1
echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
fi
if test -n "$err"
then
grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
nerrs=$((nerrs+1))
fi
done
# Set up exit code.
if test "$nerrs" -ne 0
then