From: "Paul E. McKenney" paulmck@kernel.org
This commit adds an srcu_lockdep.sh script that checks whether lockdep correctly classifies SRCU-based, SRCU/mutex-based, and SRCU/rwsem-based deadlocks.
Signed-off-by: Paul E. McKenney paulmck@kernel.org [ boqun: Fix "RCUTORTURE" with "$RCUTORTURE" ] Signed-off-by: Boqun Feng boqun.feng@gmail.com --- .../selftests/rcutorture/bin/srcu_lockdep.sh | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100755 tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh
diff --git a/tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh b/tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh new file mode 100755 index 000000000000..2e63ef009d59 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/srcu_lockdep.sh @@ -0,0 +1,78 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Run SRCU-lockdep tests and report any that fail to meet expectations. +# +# Copyright (C) 2021 Meta Platforms, Inc. +# +# Authors: Paul E. McKenney paulmck@kernel.org + +usage () { + echo "Usage: $scriptname optional arguments:" + echo " --datestamp string" + exit 1 +} + +ds=`date +%Y.%m.%d-%H.%M.%S`-srcu_lockdep +scriptname="$0" + +T="`mktemp -d ${TMPDIR-/tmp}/srcu_lockdep.sh.XXXXXX`" +trap 'rm -rf $T' 0 + +RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE +PATH=${RCUTORTURE}/bin:$PATH; export PATH +. functions.sh + +while test $# -gt 0 +do + case "$1" in + --datestamp) + checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--' + ds=$2 + shift + ;; + *) + echo Unknown argument $1 + usage + ;; + esac + shift +done + +err= +nerrs=0 +for d in 0 1 +do + for t in 0 1 2 + do + for c in 1 2 3 + do + err= + val=$((d*1000+t*10+c)) + tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --bootargs "rcutorture.test_srcu_lockdep=$val" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1 + ret=$? + mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val" + if test "$d" -ne 0 && test "$ret" -eq 0 + then + err=1 + echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err" + fi + if test "$d" -eq 0 && test "$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 + done +done +if test "$nerrs" -ne 0 +then + exit 1 +fi +exit 0