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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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75d8bf48a8
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>
119 lines
3.2 KiB
Bash
Executable File
119 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Run SRCU-lockdep tests and report any that fail to meet expectations.
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#
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# Copyright (C) 2021 Meta Platforms, Inc.
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#
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# Authors: Paul E. McKenney <paulmck@kernel.org>
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usage () {
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echo "Usage: $scriptname optional arguments:"
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echo " --datestamp string"
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exit 1
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}
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ds=`date +%Y.%m.%d-%H.%M.%S`-srcu_lockdep
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scriptname="$0"
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T="`mktemp -d ${TMPDIR-/tmp}/srcu_lockdep.sh.XXXXXX`"
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trap 'rm -rf $T' 0
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RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
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PATH=${RCUTORTURE}/bin:$PATH; export PATH
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. functions.sh
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while test $# -gt 0
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do
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case "$1" in
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--datestamp)
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checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
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ds=$2
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shift
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;;
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*)
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echo Unknown argument $1
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usage
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;;
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esac
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shift
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done
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nerrs=0
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# Test lockdep's handling of deadlocks.
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for d in 0 1
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do
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for t in 0 1 2
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do
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for c in 1 2 3
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do
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err=
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val=$((d*1000+t*10+c))
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tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" --bootargs "rcutorture.test_srcu_lockdep=$val rcutorture.reader_flavor=0x2" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
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ret=$?
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mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
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if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
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then
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echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING disabled in rcutorture SRCU-P scenario"
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nerrs=$((nerrs+1))
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err=1
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fi
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if test "$d" -ne 0 && test "$ret" -eq 0
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then
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err=1
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echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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fi
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if test "$d" -eq 0 && test "$ret" -ne 0
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then
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err=1
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echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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fi
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if test -n "$err"
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then
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grep "rcu_torture_init_srcu_lockdep: test_srcu_lockdep = " "$RCUTORTURE/res/$ds/$val/SRCU-P/console.log" | sed -e 's/^.*rcu_torture_init_srcu_lockdep://' >> "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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nerrs=$((nerrs+1))
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fi
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done
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done
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done
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# Test lockdep-enabled testing of mixed SRCU readers.
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for val in 0x1 0xf
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do
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err=
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tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 5s --configs "SRCU-P" --kconfig "CONFIG_FORCE_NEED_SRCU_NMI_SAFE=y" --bootargs "rcutorture.reader_flavor=$val" --trust-make --datestamp "$ds/$val" > "$T/kvm.sh.out" 2>&1
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ret=$?
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mv "$T/kvm.sh.out" "$RCUTORTURE/res/$ds/$val"
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if ! grep -q '^CONFIG_PROVE_LOCKING=y' .config
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then
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echo "rcu_torture_init_srcu_lockdep:Error: CONFIG_PROVE_LOCKING disabled in rcutorture SRCU-P scenario"
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nerrs=$((nerrs+1))
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err=1
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fi
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if test "$val" -eq 0xf && test "$ret" -eq 0
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then
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err=1
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echo -n Unexpected success for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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fi
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if test "$val" -eq 0x1 && test "$ret" -ne 0
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then
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err=1
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echo -n Unexpected failure for > "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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fi
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if test -n "$err"
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then
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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"
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cat "$RCUTORTURE/res/$ds/$val/kvm.sh.err"
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nerrs=$((nerrs+1))
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fi
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done
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# Set up exit code.
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if test "$nerrs" -ne 0
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then
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exit 1
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fi
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exit 0
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