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-rwxr-xr-xtools/testing/selftests/rcutorture/bin/config2csv.sh67
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/configNR_CPUS.sh32
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/config_override.sh48
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/configcheck.sh43
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/configinit.sh44
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/console-badness.sh18
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/cpus2use.sh39
-rw-r--r--tools/testing/selftests/rcutorture/bin/functions.sh327
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/jitter.sh100
-rw-r--r--tools/testing/selftests/rcutorture/bin/jitterstart.sh37
-rw-r--r--tools/testing/selftests/rcutorture/bin/jitterstop.sh23
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kcsan-collapse.sh22
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-again.sh184
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-assign-cpus.sh106
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-build.sh54
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-check-branches.sh102
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-end-run-stats.sh40
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-find-errors.sh79
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-get-cpus-script.sh88
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh38
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh76
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale-ftrace.sh109
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale.sh83
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-refscale.sh71
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck-scf.sh38
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-recheck.sh110
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-remote-noreap.sh30
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-remote.sh275
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh91
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh185
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh218
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm-transform.sh93
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/kvm.sh659
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/mkinitrd.sh81
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/parse-build.sh50
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/parse-console.sh184
-rwxr-xr-xtools/testing/selftests/rcutorture/bin/torture.sh503
37 files changed, 4347 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/config2csv.sh b/tools/testing/selftests/rcutorture/bin/config2csv.sh
new file mode 100755
index 000000000..d5a16631b
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/config2csv.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Create a spreadsheet from torture-test Kconfig options and kernel boot
+# parameters. Run this in the directory containing the scenario files.
+#
+# Usage: config2csv path.csv [ "scenario1 scenario2 ..." ]
+#
+# By default, this script will take the list of scenarios from the CFLIST
+# file in that directory, otherwise it will consider only the scenarios
+# specified on the command line. It will examine each scenario's file
+# and also its .boot file, if present, and create a column in the .csv
+# output file. Note that "CFLIST" is a synonym for all the scenarios in the
+# CFLIST file, which allows easy comparison of those scenarios with selected
+# scenarios such as BUSTED that are normally omitted from CFLIST files.
+
+csvout=${1}
+if test -z "$csvout"
+then
+ echo "Need .csv output file as first argument."
+ exit 1
+fi
+shift
+defaultconfigs="`tr '\012' ' ' < CFLIST`"
+if test "$#" -eq 0
+then
+ scenariosarg=$defaultconfigs
+else
+ scenariosarg=$*
+fi
+scenarios="`echo $scenariosarg | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
+
+T=/tmp/config2latex.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+cat << '---EOF---' >> $T/p.awk
+END {
+---EOF---
+for i in $scenarios
+do
+ echo ' s["'$i'"] = 1;' >> $T/p.awk
+ grep -v '^#' < $i | grep -v '^ *$' > $T/p
+ if test -r $i.boot
+ then
+ tr -s ' ' '\012' < $i.boot | grep -v '^#' >> $T/p
+ fi
+ sed -e 's/^[^=]*$/&=?/' < $T/p |
+ sed -e 's/^\([^=]*\)=\(.*\)$/\tp["\1:'"$i"'"] = "\2";\n\tc["\1"] = 1;/' >> $T/p.awk
+done
+cat << '---EOF---' >> $T/p.awk
+ ns = asorti(s, ss);
+ nc = asorti(c, cs);
+ for (j = 1; j <= ns; j++)
+ printf ",\"%s\"", ss[j];
+ printf "\n";
+ for (i = 1; i <= nc; i++) {
+ printf "\"%s\"", cs[i];
+ for (j = 1; j <= ns; j++) {
+ printf ",\"%s\"", p[cs[i] ":" ss[j]];
+ }
+ printf "\n";
+ }
+}
+---EOF---
+awk -f $T/p.awk < /dev/null > $T/p.csv
+cp $T/p.csv $csvout
diff --git a/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh b/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh
new file mode 100755
index 000000000..2deea2169
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/configNR_CPUS.sh
@@ -0,0 +1,32 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Extract the number of CPUs expected from the specified Kconfig-file
+# fragment by checking CONFIG_SMP and CONFIG_NR_CPUS. If the specified
+# file gives no clue, base the number on the number of idle CPUs on
+# the system.
+#
+# Usage: configNR_CPUS.sh config-frag
+#
+# Copyright (C) IBM Corporation, 2013
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+cf=$1
+if test ! -r $cf
+then
+ echo Unreadable config fragment $cf 1>&2
+ exit -1
+fi
+if grep -q '^CONFIG_SMP=n$' $cf
+then
+ echo 1
+ exit 0
+fi
+if grep -q '^CONFIG_NR_CPUS=' $cf
+then
+ grep '^CONFIG_NR_CPUS=' $cf |
+ sed -e 's/^CONFIG_NR_CPUS=\([0-9]*\).*$/\1/'
+ exit 0
+fi
+cpus2use.sh
diff --git a/tools/testing/selftests/rcutorture/bin/config_override.sh b/tools/testing/selftests/rcutorture/bin/config_override.sh
new file mode 100755
index 000000000..90016c359
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/config_override.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# config_override.sh base override
+#
+# Combines base and override, removing any Kconfig options from base
+# that conflict with any in override, concatenating what remains and
+# sending the result to standard output.
+#
+# Copyright (C) IBM Corporation, 2017
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+base=$1
+if test -r $base
+then
+ :
+else
+ echo Base file $base unreadable!!!
+ exit 1
+fi
+
+override=$2
+if test -r $override
+then
+ :
+else
+ echo Override file $override unreadable!!!
+ exit 1
+fi
+
+T=${TMPDIR-/tmp}/config_override.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' |
+ awk '
+ {
+ if (last)
+ print last " |";
+ last = $0;
+ }
+ END {
+ if (last)
+ print last;
+ }' > $T/script
+sh $T/script < $base
+cat $override
diff --git a/tools/testing/selftests/rcutorture/bin/configcheck.sh b/tools/testing/selftests/rcutorture/bin/configcheck.sh
new file mode 100755
index 000000000..31584cee8
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/configcheck.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Usage: configcheck.sh .config .config-template
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+T=${TMPDIR-/tmp}/abat-chk-config.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+cat $1 > $T/.config
+
+cat $2 | sed -e 's/\(.*\)=n/# \1 is not set/' -e 's/^#CHECK#//' |
+grep -v '^CONFIG_INITRAMFS_SOURCE' |
+awk '
+{
+ print "if grep -q \"" $0 "\" < '"$T/.config"'";
+ print "then";
+ print "\t:";
+ print "else";
+ if ($1 == "#") {
+ print "\tif grep -q \"" $2 "\" < '"$T/.config"'";
+ print "\tthen";
+ print "\t\tif test \"$firsttime\" = \"\""
+ print "\t\tthen"
+ print "\t\t\tfirsttime=1"
+ print "\t\tfi"
+ print "\t\techo \":" $2 ": improperly set\"";
+ print "\telse";
+ print "\t\t:";
+ print "\tfi";
+ } else {
+ print "\tif test \"$firsttime\" = \"\""
+ print "\tthen"
+ print "\t\tfirsttime=1"
+ print "\tfi"
+ print "\techo \":" $0 ": improperly set\"";
+ }
+ print "fi";
+ }' | sh
diff --git a/tools/testing/selftests/rcutorture/bin/configinit.sh b/tools/testing/selftests/rcutorture/bin/configinit.sh
new file mode 100755
index 000000000..d6e5ce084
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/configinit.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Usage: configinit.sh config-spec-file results-dir
+#
+# Create a .config file from the spec file. Run from the kernel source tree.
+# Exits with 0 if all went well, with 1 if all went well but the config
+# did not match, and some other number for other failures.
+#
+# The first argument is the .config specification file, which contains
+# desired settings, for example, "CONFIG_NO_HZ=y". For best results,
+# this should be a full pathname.
+#
+# Copyright (C) IBM Corporation, 2013
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+T=${TMPDIR-/tmp}/configinit.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+# Capture config spec file.
+
+c=$1
+resdir=$2
+
+sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh
+sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh
+grep '^grep' < $T/u.sh > $T/upd.sh
+echo "cat - $c" >> $T/upd.sh
+if test -z "$TORTURE_TRUST_MAKE"
+then
+ make clean > $resdir/Make.clean 2>&1
+fi
+make $TORTURE_KMAKE_ARG $TORTURE_DEFCONFIG > $resdir/Make.defconfig.out 2>&1
+mv .config .config.sav
+sh $T/upd.sh < .config.sav > .config
+cp .config .config.new
+yes '' | make $TORTURE_KMAKE_ARG oldconfig > $resdir/Make.oldconfig.out 2> $resdir/Make.oldconfig.err
+
+# verify new config matches specification.
+configcheck.sh .config $c
+
+exit 0
diff --git a/tools/testing/selftests/rcutorture/bin/console-badness.sh b/tools/testing/selftests/rcutorture/bin/console-badness.sh
new file mode 100755
index 000000000..69f8a5958
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/console-badness.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Scan standard input for error messages, dumping any found to standard
+# output.
+#
+# Usage: console-badness.sh
+#
+# Copyright (C) 2020 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+egrep 'Badness|WARNING:|Warn|BUG|===========|BUG: KCSAN:|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for|!!!' |
+grep -v 'ODEBUG: ' |
+grep -v 'This means that this is a DEBUG kernel and it is' |
+grep -v 'Warning: unable to open an initial console' |
+grep -v 'Warning: Failed to add ttynull console. No stdin, stdout, and stderr.*the init process!' |
+grep -v 'NOHZ tick-stop error: Non-RCU local softirq work is pending, handler'
diff --git a/tools/testing/selftests/rcutorture/bin/cpus2use.sh b/tools/testing/selftests/rcutorture/bin/cpus2use.sh
new file mode 100755
index 000000000..6bb993001
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/cpus2use.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Get an estimate of how CPU-hoggy to be.
+#
+# Usage: cpus2use.sh
+#
+# Copyright (C) IBM Corporation, 2013
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+if test -n "$TORTURE_ALLOTED_CPUS"
+then
+ echo $TORTURE_ALLOTED_CPUS
+ exit 0
+fi
+ncpus=`grep '^processor' /proc/cpuinfo | wc -l`
+if mpstat -V > /dev/null 2>&1
+then
+ idlecpus=`mpstat | tail -1 | \
+ awk -v ncpus=$ncpus '{ print ncpus * ($7 + $NF) / 100 }'`
+else
+ # No mpstat command, so use all available CPUs.
+ idlecpus=$ncpus
+fi
+awk -v ncpus=$ncpus -v idlecpus=$idlecpus < /dev/null '
+BEGIN {
+ cpus2use = idlecpus;
+ if (cpus2use < 1)
+ cpus2use = 1;
+ if (cpus2use < ncpus / 10)
+ cpus2use = ncpus / 10;
+ if (cpus2use == int(cpus2use))
+ cpus2use = int(cpus2use)
+ else
+ cpus2use = int(cpus2use) + 1
+ print cpus2use;
+}'
+
diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh
new file mode 100644
index 000000000..66d0414d8
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/functions.sh
@@ -0,0 +1,327 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Shell functions for the rest of the scripts.
+#
+# Copyright (C) IBM Corporation, 2013
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+# bootparam_hotplug_cpu bootparam-string
+#
+# Returns 1 if the specified boot-parameter string tells rcutorture to
+# test CPU-hotplug operations.
+bootparam_hotplug_cpu () {
+ echo "$1" | grep -q "torture\.onoff_"
+}
+
+# checkarg --argname argtype $# arg mustmatch cannotmatch
+#
+# Checks the specified argument "arg" against the mustmatch and cannotmatch
+# patterns.
+checkarg () {
+ if test $3 -le 1
+ then
+ echo $1 needs argument $2 matching \"$5\"
+ usage
+ fi
+ if echo "$4" | grep -q -e "$5"
+ then
+ :
+ else
+ echo $1 $2 \"$4\" must match \"$5\"
+ usage
+ fi
+ if echo "$4" | grep -q -e "$6"
+ then
+ echo $1 $2 \"$4\" must not match \"$6\"
+ usage
+ fi
+}
+
+# configfrag_boot_params bootparam-string config-fragment-file
+#
+# Adds boot parameters from the .boot file, if any.
+configfrag_boot_params () {
+ if test -r "$2.boot"
+ then
+ echo $1 `grep -v '^#' "$2.boot" | tr '\012' ' '`
+ else
+ echo $1
+ fi
+}
+
+# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus
+#
+# Decreases number of CPUs based on any nr_cpus= boot parameters specified.
+configfrag_boot_cpus () {
+ local bootargs="`configfrag_boot_params "$1" "$2"`"
+ local nr_cpus
+ if echo "${bootargs}" | grep -q 'nr_cpus=[0-9]'
+ then
+ nr_cpus="`echo "${bootargs}" | sed -e 's/^.*nr_cpus=\([0-9]*\).*$/\1/'`"
+ if test "$3" -gt "$nr_cpus"
+ then
+ echo $nr_cpus
+ else
+ echo $3
+ fi
+ else
+ echo $3
+ fi
+}
+
+# configfrag_boot_maxcpus bootparam-string config-fragment-file config-cpus
+#
+# Decreases number of CPUs based on any maxcpus= boot parameters specified.
+# This allows tests where additional CPUs come online later during the
+# test run. However, the torture parameters will be set based on the
+# number of CPUs initially present, so the scripting should schedule
+# test runs based on the maxcpus= boot parameter controlling the initial
+# number of CPUs instead of on the ultimate number of CPUs.
+configfrag_boot_maxcpus () {
+ local bootargs="`configfrag_boot_params "$1" "$2"`"
+ local maxcpus
+ if echo "${bootargs}" | grep -q 'maxcpus=[0-9]'
+ then
+ maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`"
+ if test "$3" -gt "$maxcpus"
+ then
+ echo $maxcpus
+ else
+ echo $3
+ fi
+ else
+ echo $3
+ fi
+}
+
+# configfrag_hotplug_cpu config-fragment-file
+#
+# Returns 1 if the config fragment specifies hotplug CPU.
+configfrag_hotplug_cpu () {
+ if test ! -r "$1"
+ then
+ echo Unreadable config fragment "$1" 1>&2
+ exit -1
+ fi
+ grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1"
+}
+
+# get_starttime
+#
+# Returns a cookie identifying the current time.
+get_starttime () {
+ awk 'BEGIN { print systime() }' < /dev/null
+}
+
+# get_starttime_duration starttime
+#
+# Given the return value from get_starttime, compute a human-readable
+# string denoting the time since get_starttime.
+get_starttime_duration () {
+ awk -v starttime=$1 '
+ BEGIN {
+ ts = systime() - starttime;
+ tm = int(ts / 60);
+ th = int(ts / 3600);
+ td = int(ts / 86400);
+ d = td;
+ h = th - td * 24;
+ m = tm - th * 60;
+ s = ts - tm * 60;
+ if (d >= 1)
+ printf "%dd %d:%02d:%02d\n", d, h, m, s
+ else if (h >= 1)
+ printf "%d:%02d:%02d\n", h, m, s
+ else if (m >= 1)
+ printf "%d:%02d.0\n", m, s
+ else
+ print s " seconds"
+ }' < /dev/null
+}
+
+# identify_boot_image qemu-cmd
+#
+# Returns the relative path to the kernel build image. This will be
+# arch/<arch>/boot/bzImage or vmlinux if bzImage is not a target for the
+# architecture, unless overridden with the TORTURE_BOOT_IMAGE environment
+# variable.
+identify_boot_image () {
+ if test -n "$TORTURE_BOOT_IMAGE"
+ then
+ echo $TORTURE_BOOT_IMAGE
+ else
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ echo arch/x86/boot/bzImage
+ ;;
+ qemu-system-aarch64)
+ echo arch/arm64/boot/Image
+ ;;
+ *)
+ echo vmlinux
+ ;;
+ esac
+ fi
+}
+
+# identify_qemu builddir
+#
+# Returns our best guess as to which qemu command is appropriate for
+# the kernel at hand. Override with the TORTURE_QEMU_CMD environment variable.
+identify_qemu () {
+ local u="`file "$1"`"
+ if test -n "$TORTURE_QEMU_CMD"
+ then
+ echo $TORTURE_QEMU_CMD
+ elif echo $u | grep -q x86-64
+ then
+ echo qemu-system-x86_64
+ elif echo $u | grep -q "Intel 80386"
+ then
+ echo qemu-system-i386
+ elif echo $u | grep -q aarch64
+ then
+ echo qemu-system-aarch64
+ elif uname -a | grep -q ppc64
+ then
+ echo qemu-system-ppc64
+ else
+ echo Cannot figure out what qemu command to use! 1>&2
+ echo file $1 output: $u
+ # Usually this will be one of /usr/bin/qemu-system-*
+ # Use TORTURE_QEMU_CMD environment variable or appropriate
+ # argument to top-level script.
+ exit 1
+ fi
+}
+
+# identify_qemu_append qemu-cmd
+#
+# Output arguments for the qemu "-append" string based on CPU type
+# and the TORTURE_QEMU_INTERACTIVE environment variable.
+identify_qemu_append () {
+ echo debug_boot_weak_hash
+ echo panic=-1
+ local console=ttyS0
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ echo selinux=0 initcall_debug debug
+ ;;
+ qemu-system-aarch64)
+ console=ttyAMA0
+ ;;
+ esac
+ if test -n "$TORTURE_QEMU_INTERACTIVE"
+ then
+ echo root=/dev/sda
+ else
+ echo console=$console
+ fi
+}
+
+# identify_qemu_args qemu-cmd serial-file
+#
+# Output arguments for qemu arguments based on the TORTURE_QEMU_MAC
+# and TORTURE_QEMU_INTERACTIVE environment variables.
+identify_qemu_args () {
+ local KVM_CPU=""
+ case "$1" in
+ qemu-system-x86_64)
+ KVM_CPU=kvm64
+ ;;
+ qemu-system-i386)
+ KVM_CPU=kvm32
+ ;;
+ esac
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386)
+ echo -machine q35,accel=kvm
+ echo -cpu ${KVM_CPU}
+ ;;
+ qemu-system-aarch64)
+ echo -machine virt,gic-version=host -cpu host
+ ;;
+ qemu-system-ppc64)
+ echo -enable-kvm -M pseries -nodefaults
+ echo -device spapr-vscsi
+ if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC"
+ then
+ echo -device spapr-vlan,netdev=net0,mac=$TORTURE_QEMU_MAC
+ echo -netdev bridge,br=br0,id=net0
+ fi
+ ;;
+ esac
+ if test -n "$TORTURE_QEMU_INTERACTIVE"
+ then
+ echo -monitor stdio -serial pty -S
+ else
+ echo -serial file:$2
+ fi
+}
+
+# identify_qemu_vcpus
+#
+# Returns the number of virtual CPUs available to the aggregate of the
+# guest OSes.
+identify_qemu_vcpus () {
+ getconf _NPROCESSORS_ONLN
+}
+
+# print_bug
+#
+# Prints "BUG: " in red followed by remaining arguments
+print_bug () {
+ printf '\033[031mBUG: \033[m'
+ echo $*
+}
+
+# print_warning
+#
+# Prints "WARNING: " in yellow followed by remaining arguments
+print_warning () {
+ printf '\033[033mWARNING: \033[m'
+ echo $*
+}
+
+# specify_qemu_cpus qemu-cmd qemu-args #cpus
+#
+# Appends a string containing "-smp XXX" to qemu-args, unless the incoming
+# qemu-args already contains "-smp".
+specify_qemu_cpus () {
+ local nt;
+
+ if echo $2 | grep -q -e -smp
+ then
+ echo $2
+ else
+ case "$1" in
+ qemu-system-x86_64|qemu-system-i386|qemu-system-aarch64)
+ echo $2 -smp $3
+ ;;
+ qemu-system-ppc64)
+ nt="`lscpu | sed -n 's/^Thread(s) per core:\s*//p'`"
+ echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt
+ ;;
+ esac
+ fi
+}
+
+# specify_qemu_net qemu-args
+#
+# Appends a string containing "-net none" to qemu-args, unless the incoming
+# qemu-args already contains "-smp" or unless the TORTURE_QEMU_INTERACTIVE
+# environment variable is set, in which case the string that is be added is
+# instead "-net nic -net user".
+specify_qemu_net () {
+ if echo $1 | grep -q -e -net
+ then
+ echo $1
+ elif test -n "$TORTURE_QEMU_INTERACTIVE"
+ then
+ echo $1 -net nic -net user
+ else
+ echo $1 -net none
+ fi
+}
diff --git a/tools/testing/selftests/rcutorture/bin/jitter.sh b/tools/testing/selftests/rcutorture/bin/jitter.sh
new file mode 100755
index 000000000..fd1ffaa5a
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/jitter.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Alternate sleeping and spinning on randomly selected CPUs. The purpose
+# of this script is to inflict random OS jitter on a concurrently running
+# test.
+#
+# Usage: jitter.sh me jittering-path duration [ sleepmax [ spinmax ] ]
+#
+# me: Random-number-generator seed salt.
+# duration: Time to run in seconds.
+# jittering-path: Path to file whose removal will stop this script.
+# sleepmax: Maximum microseconds to sleep, defaults to one second.
+# spinmax: Maximum microseconds to spin, defaults to one millisecond.
+#
+# Copyright (C) IBM Corporation, 2016
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+me=$(($1 * 1000))
+jittering=$2
+duration=$3
+sleepmax=${4-1000000}
+spinmax=${5-1000}
+
+n=1
+
+starttime=`gawk 'BEGIN { print systime(); }' < /dev/null`
+
+nohotplugcpus=
+for i in /sys/devices/system/cpu/cpu[0-9]*
+do
+ if test -f $i/online
+ then
+ :
+ else
+ curcpu=`echo $i | sed -e 's/^[^0-9]*//'`
+ nohotplugcpus="$nohotplugcpus $curcpu"
+ fi
+done
+
+while :
+do
+ # Check for done.
+ t=`gawk -v s=$starttime 'BEGIN { print systime() - s; }' < /dev/null`
+ if test "$t" -gt "$duration"
+ then
+ exit 0;
+ fi
+
+ # Check for stop request.
+ if ! test -f "$jittering"
+ then
+ exit 1;
+ fi
+
+ # Set affinity to randomly selected online CPU
+ if cpus=`grep 1 /sys/devices/system/cpu/*/online 2>&1 |
+ sed -e 's,/[^/]*$,,' -e 's/^[^0-9]*//'`
+ then
+ :
+ else
+ cpus=
+ fi
+ # Do not leave out non-hot-pluggable CPUs
+ cpus="$cpus $nohotplugcpus"
+
+ cpumask=`awk -v cpus="$cpus" -v me=$me -v n=$n 'BEGIN {
+ srand(n + me + systime());
+ ncpus = split(cpus, ca);
+ print ca[int(rand() * ncpus + 1)];
+ }' < /dev/null`
+ n=$(($n+1))
+ if ! taskset -c -p $cpumask $$ > /dev/null 2>&1
+ then
+ echo taskset failure: '"taskset -c -p ' $cpumask $$ '"'
+ exit 1
+ fi
+
+ # Sleep a random duration
+ sleeptime=`awk -v me=$me -v n=$n -v sleepmax=$sleepmax 'BEGIN {
+ srand(n + me + systime());
+ printf("%06d", int(rand() * sleepmax));
+ }' < /dev/null`
+ n=$(($n+1))
+ sleep .$sleeptime
+
+ # Spin a random duration
+ limit=`awk -v me=$me -v n=$n -v spinmax=$spinmax 'BEGIN {
+ srand(n + me + systime());
+ printf("%06d", int(rand() * spinmax));
+ }' < /dev/null`
+ n=$(($n+1))
+ for i in {1..$limit}
+ do
+ echo > /dev/null
+ done
+done
+
+exit 1
diff --git a/tools/testing/selftests/rcutorture/bin/jitterstart.sh b/tools/testing/selftests/rcutorture/bin/jitterstart.sh
new file mode 100644
index 000000000..3d710ad29
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/jitterstart.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Start up the specified number of jitter.sh scripts in the background.
+#
+# Usage: . jitterstart.sh n jittering-dir duration [ sleepmax [ spinmax ] ]
+#
+# n: Number of jitter.sh scripts to start up.
+# jittering-dir: Directory in which to put "jittering" file.
+# duration: Time to run in seconds.
+# sleepmax: Maximum microseconds to sleep, defaults to one second.
+# spinmax: Maximum microseconds to spin, defaults to one millisecond.
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+jitter_n=$1
+if test -z "$jitter_n"
+then
+ echo jitterstart.sh: Missing count of jitter.sh scripts to start.
+ exit 33
+fi
+jittering_dir=$2
+if test -z "$jittering_dir"
+then
+ echo jitterstart.sh: Missing directory in which to place jittering file.
+ exit 34
+fi
+shift
+shift
+
+touch ${jittering_dir}/jittering
+for ((jitter_i = 1; jitter_i <= $jitter_n; jitter_i++))
+do
+ jitter.sh $jitter_i "${jittering_dir}/jittering" "$@" &
+done
diff --git a/tools/testing/selftests/rcutorture/bin/jitterstop.sh b/tools/testing/selftests/rcutorture/bin/jitterstop.sh
new file mode 100644
index 000000000..576a4cf4b
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/jitterstop.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Remove the "jittering" file, signaling the jitter.sh scripts to stop,
+# then wait for them to terminate.
+#
+# Usage: . jitterstop.sh jittering-dir
+#
+# jittering-dir: Directory containing "jittering" file.
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+jittering_dir=$1
+if test -z "$jittering_dir"
+then
+ echo jitterstop.sh: Missing directory in which to place jittering file.
+ exit 34
+fi
+
+rm -f ${jittering_dir}/jittering
+wait
diff --git a/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh b/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh
new file mode 100755
index 000000000..1af5d6b86
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# If this was a KCSAN run, collapse the reports in the various console.log
+# files onto pairs of functions.
+#
+# Usage: kcsan-collapse.sh resultsdir
+#
+# Copyright (C) 2020 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+if test -z "$TORTURE_KCONFIG_KCSAN_ARG"
+then
+ exit 0
+fi
+find $1 -name console.log -exec cat {} \; |
+ grep "BUG: KCSAN: " |
+ sed -e 's/^\[[^]]*] //' |
+ sort |
+ uniq -c |
+ sort -k1nr > $1/kcsan.sum
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-again.sh b/tools/testing/selftests/rcutorture/bin/kvm-again.sh
new file mode 100755
index 000000000..0941f1dda
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-again.sh
@@ -0,0 +1,184 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Rerun a series of tests under KVM.
+#
+# Usage: kvm-again.sh /path/to/old/run [ options ]
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+scriptname=$0
+args="$*"
+
+T=${TMPDIR-/tmp}/kvm-again.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+if ! test -d tools/testing/selftests/rcutorture/bin
+then
+ echo $scriptname must be run from top-level directory of kernel source tree.
+ exit 1
+fi
+
+oldrun=$1
+shift
+if ! test -d "$oldrun"
+then
+ echo "Usage: $scriptname /path/to/old/run [ options ]"
+ exit 1
+fi
+if ! cp "$oldrun/scenarios" $T/scenarios.oldrun
+then
+ # Later on, can reconstitute this from console.log files.
+ echo Prior run batches file does not exist: $oldrun/batches
+ exit 1
+fi
+
+if test -f "$oldrun/torture_suite"
+then
+ torture_suite="`cat $oldrun/torture_suite`"
+elif test -f "$oldrun/TORTURE_SUITE"
+then
+ torture_suite="`cat $oldrun/TORTURE_SUITE`"
+else
+ echo "Prior run torture_suite file does not exist: $oldrun/{torture_suite,TORTURE_SUITE}"
+ exit 1
+fi
+
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+
+dryrun=
+dur=
+default_link="cp -R"
+rundir="`pwd`/tools/testing/selftests/rcutorture/res/`date +%Y.%m.%d-%H.%M.%S-again`"
+
+startdate="`date`"
+starttime="`get_starttime`"
+
+usage () {
+ echo "Usage: $scriptname $oldrun [ arguments ]:"
+ echo " --dryrun"
+ echo " --duration minutes | <seconds>s | <hours>h | <days>d"
+ echo " --link hard|soft|copy"
+ echo " --remote"
+ echo " --rundir /new/res/path"
+ exit 1
+}
+
+while test $# -gt 0
+do
+ case "$1" in
+ --dryrun)
+ dryrun=1
+ ;;
+ --duration)
+ checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
+ mult=60
+ if echo "$2" | grep -q 's$'
+ then
+ mult=1
+ elif echo "$2" | grep -q 'h$'
+ then
+ mult=3600
+ elif echo "$2" | grep -q 'd$'
+ then
+ mult=86400
+ fi
+ ts=`echo $2 | sed -e 's/[smhd]$//'`
+ dur=$(($ts*mult))
+ shift
+ ;;
+ --link)
+ checkarg --link "hard|soft|copy" "$#" "$2" 'hard\|soft\|copy' '^--'
+ case "$2" in
+ copy)
+ arg_link="cp -R"
+ ;;
+ hard)
+ arg_link="cp -Rl"
+ ;;
+ soft)
+ arg_link="cp -Rs"
+ ;;
+ esac
+ shift
+ ;;
+ --remote)
+ arg_remote=1
+ default_link="cp -as"
+ ;;
+ --rundir)
+ checkarg --rundir "(absolute pathname)" "$#" "$2" '^/' '^error'
+ rundir=$2
+ if test -e "$rundir"
+ then
+ echo "--rundir $2: Already exists."
+ usage
+ fi
+ shift
+ ;;
+ *)
+ echo Unknown argument $1
+ usage
+ ;;
+ esac
+ shift
+done
+if test -z "$arg_link"
+then
+ arg_link="$default_link"
+fi
+
+echo ---- Re-run results directory: $rundir
+
+# Copy old run directory tree over and adjust.
+mkdir -p "`dirname "$rundir"`"
+if ! $arg_link "$oldrun" "$rundir"
+then
+ echo "Cannot copy from $oldrun to $rundir."
+ usage
+fi
+rm -f "$rundir"/*/{console.log,console.log.diags,qemu_pid,qemu-pid,qemu-retval,Warnings,kvm-test-1-run.sh.out,kvm-test-1-run-qemu.sh.out,vmlinux} "$rundir"/log
+touch "$rundir/log"
+echo $scriptname $args | tee -a "$rundir/log"
+echo $oldrun > "$rundir/re-run"
+if ! test -d "$rundir/../../bin"
+then
+ $arg_link "$oldrun/../../bin" "$rundir/../.."
+fi
+for i in $rundir/*/qemu-cmd
+do
+ cp "$i" $T
+ qemu_cmd_dir="`dirname "$i"`"
+ kernel_dir="`echo $qemu_cmd_dir | sed -e 's/\.[0-9]\+$//'`"
+ jitter_dir="`dirname "$kernel_dir"`"
+ kvm-transform.sh "$kernel_dir/bzImage" "$qemu_cmd_dir/console.log" "$jitter_dir" $dur < $T/qemu-cmd > $i
+ if test -n "$arg_remote"
+ then
+ echo "# TORTURE_KCONFIG_GDB_ARG=''" >> $i
+ fi
+done
+
+# Extract settings from the last qemu-cmd file transformed above.
+grep '^#' $i | sed -e 's/^# //' > $T/qemu-cmd-settings
+. $T/qemu-cmd-settings
+
+grep -v '^#' $T/scenarios.oldrun | awk '
+{
+ curbatch = "";
+ for (i = 2; i <= NF; i++)
+ curbatch = curbatch " " $i;
+ print "kvm-test-1-run-batch.sh" curbatch;
+}' > $T/runbatches.sh
+
+if test -n "$dryrun"
+then
+ echo ---- Dryrun complete, directory: $rundir | tee -a "$rundir/log"
+else
+ ( cd "$rundir"; sh $T/runbatches.sh ) | tee -a "$rundir/log"
+ kvm-end-run-stats.sh "$rundir" "$starttime"
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-assign-cpus.sh b/tools/testing/selftests/rcutorture/bin/kvm-assign-cpus.sh
new file mode 100755
index 000000000..f99b2c146
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-assign-cpus.sh
@@ -0,0 +1,106 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Produce awk statements roughly depicting the system's CPU and cache
+# layout. If the required information is not available, produce
+# error messages as awk comments. Successful exit regardless.
+#
+# Usage: kvm-assign-cpus.sh /path/to/sysfs
+
+T=/tmp/kvm-assign-cpus.sh.$$
+trap 'rm -rf $T' 0 2
+mkdir $T
+
+sysfsdir=${1-/sys/devices/system/node}
+if ! cd "$sysfsdir" > $T/msg 2>&1
+then
+ sed -e 's/^/# /' < $T/msg
+ exit 0
+fi
+nodelist="`ls -d node*`"
+for i in node*
+do
+ if ! test -d $i/
+ then
+ echo "# Not a directory: $sysfsdir/node*"
+ exit 0
+ fi
+ for j in $i/cpu*/cache/index*
+ do
+ if ! test -d $j/
+ then
+ echo "# Not a directory: $sysfsdir/$j"
+ exit 0
+ else
+ break
+ fi
+ done
+ indexlist="`ls -d $i/cpu* | grep 'cpu[0-9][0-9]*' | head -1 | sed -e 's,^.*$,ls -d &/cache/index*,' | sh | sed -e 's,^.*/,,'`"
+ break
+done
+for i in node*/cpu*/cache/index*/shared_cpu_list
+do
+ if ! test -f $i
+ then
+ echo "# Not a file: $sysfsdir/$i"
+ exit 0
+ else
+ break
+ fi
+done
+firstshared=
+for i in $indexlist
+do
+ rm -f $T/cpulist
+ for n in node*
+ do
+ f="$n/cpu*/cache/$i/shared_cpu_list"
+ if ! cat $f > $T/msg 2>&1
+ then
+ sed -e 's/^/# /' < $T/msg
+ exit 0
+ fi
+ cat $f >> $T/cpulist
+ done
+ if grep -q '[-,]' $T/cpulist
+ then
+ if test -z "$firstshared"
+ then
+ firstshared="$i"
+ fi
+ fi
+done
+if test -z "$firstshared"
+then
+ splitindex="`echo $indexlist | sed -e 's/ .*$//'`"
+else
+ splitindex="$firstshared"
+fi
+nodenum=0
+for n in node*
+do
+ cat $n/cpu*/cache/$splitindex/shared_cpu_list | sort -u -k1n |
+ awk -v nodenum="$nodenum" '
+ BEGIN {
+ idx = 0;
+ }
+
+ {
+ nlists = split($0, cpulists, ",");
+ for (i = 1; i <= nlists; i++) {
+ listsize = split(cpulists[i], cpus, "-");
+ if (listsize == 1)
+ cpus[2] = cpus[1];
+ for (j = cpus[1]; j <= cpus[2]; j++) {
+ print "cpu[" nodenum "][" idx "] = " j ";";
+ idx++;
+ }
+ }
+ }
+
+ END {
+ print "nodecpus[" nodenum "] = " idx ";";
+ }'
+ nodenum=`expr $nodenum + 1`
+done
+echo "numnodes = $nodenum;"
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-build.sh b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
new file mode 100755
index 000000000..5ad973dca
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-build.sh
@@ -0,0 +1,54 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Build a kvm-ready Linux kernel from the tree in the current directory.
+#
+# Usage: kvm-build.sh config-template resdir
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+if test -f "$TORTURE_STOPFILE"
+then
+ echo "kvm-build.sh early exit due to run STOP request"
+ exit 1
+fi
+
+config_template=${1}
+if test -z "$config_template" -o ! -f "$config_template" -o ! -r "$config_template"
+then
+ echo "kvm-build.sh :$config_template: Not a readable file"
+ exit 1
+fi
+resdir=${2}
+
+T=${TMPDIR-/tmp}/test-linux.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+cp ${config_template} $T/config
+cat << ___EOF___ >> $T/config
+CONFIG_INITRAMFS_SOURCE="$TORTURE_INITRD"
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_CONSOLE=y
+___EOF___
+
+configinit.sh $T/config $resdir
+retval=$?
+if test $retval -gt 1
+then
+ exit 2
+fi
+
+# Tell "make" to use double the number of real CPUs on the build system.
+ncpus="`getconf _NPROCESSORS_ONLN`"
+make -j$((2 * ncpus)) $TORTURE_KMAKE_ARG > $resdir/Make.out 2>&1
+retval=$?
+if test $retval -ne 0 || grep "rcu[^/]*": < $resdir/Make.out | egrep -q "Stop|Error|error:|warning:" || egrep -q "Stop|Error|error:" < $resdir/Make.out
+then
+ echo Kernel build error
+ egrep "Stop|Error|error:|warning:" < $resdir/Make.out
+ echo Run aborted.
+ exit 3
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-check-branches.sh b/tools/testing/selftests/rcutorture/bin/kvm-check-branches.sh
new file mode 100755
index 000000000..ed0ec7f09
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-check-branches.sh
@@ -0,0 +1,102 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Run a group of kvm.sh tests on the specified commits. This currently
+# unconditionally does three-minute runs on each scenario in CFLIST,
+# taking advantage of all available CPUs and trusting the "make" utility.
+# In the short term, adjustments can be made by editing this script and
+# CFLIST. If some adjustments appear to have ongoing value, this script
+# might grow some command-line arguments.
+#
+# Usage: kvm-check-branches.sh commit1 commit2..commit3 commit4 ...
+#
+# This script considers its arguments one at a time. If more elaborate
+# specification of commits is needed, please use "git rev-list" to
+# produce something that this simple script can understand. The reason
+# for retaining the simplicity is that it allows the user to more easily
+# see which commit came from which branch.
+#
+# This script creates a yyyy.mm.dd-hh.mm.ss-group entry in the "res"
+# directory. The calls to kvm.sh create the usual entries, but this script
+# moves them under the yyyy.mm.dd-hh.mm.ss-group entry, each in its own
+# directory numbered in run order, that is, "0001", "0002", and so on.
+# For successful runs, the large build artifacts are removed. Doing this
+# reduces the disk space required by about two orders of magnitude for
+# successful runs.
+#
+# Copyright (C) Facebook, 2020
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+if ! git status > /dev/null 2>&1
+then
+ echo '!!!' This script needs to run in a git archive. 1>&2
+ echo '!!!' Giving up. 1>&2
+ exit 1
+fi
+
+# Remember where we started so that we can get back at the end.
+curcommit="`git status | head -1 | awk '{ print $NF }'`"
+
+nfail=0
+ntry=0
+resdir="tools/testing/selftests/rcutorture/res"
+ds="`date +%Y.%m.%d-%H.%M.%S`-group"
+if ! test -e $resdir
+then
+ mkdir $resdir || :
+fi
+mkdir $resdir/$ds
+echo Results directory: $resdir/$ds
+
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+echo Using all `identify_qemu_vcpus` CPUs.
+
+# Each pass through this loop does one command-line argument.
+for gitbr in $@
+do
+ echo ' --- git branch ' $gitbr
+
+ # Each pass through this loop tests one commit.
+ for i in `git rev-list "$gitbr"`
+ do
+ ntry=`expr $ntry + 1`
+ idir=`awk -v ntry="$ntry" 'END { printf "%04d", ntry; }' < /dev/null`
+ echo ' --- commit ' $i from branch $gitbr
+ date
+ mkdir $resdir/$ds/$idir
+ echo $gitbr > $resdir/$ds/$idir/gitbr
+ echo $i >> $resdir/$ds/$idir/gitbr
+
+ # Test the specified commit.
+ git checkout $i > $resdir/$ds/$idir/git-checkout.out 2>&1
+ echo git checkout return code: $? "(Commit $ntry: $i)"
+ kvm.sh --allcpus --duration 3 --trust-make --datestamp "$ds/$idir" > $resdir/$ds/$idir/kvm.sh.out 2>&1
+ ret=$?
+ echo kvm.sh return code $ret for commit $i from branch $gitbr
+ echo Run results: $resdir/$ds/$idir
+ if test "$ret" -ne 0
+ then
+ # Failure, so leave all evidence intact.
+ nfail=`expr $nfail + 1`
+ else
+ # Success, so remove large files to save about 1GB.
+ ( cd $resdir/$ds/$idir/$rrd; rm -f */vmlinux */bzImage */System.map */Module.symvers )
+ fi
+ done
+done
+date
+
+# Go back to the original commit.
+git checkout "$curcommit"
+
+if test $nfail -ne 0
+then
+ echo '!!! ' $nfail failures in $ntry 'runs!!!'
+ exit 1
+else
+ echo No failures in $ntry runs.
+ exit 0
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-end-run-stats.sh b/tools/testing/selftests/rcutorture/bin/kvm-end-run-stats.sh
new file mode 100755
index 000000000..ee886b40a
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-end-run-stats.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Check the status of the specified run.
+#
+# Usage: kvm-end-run-stats.sh /path/to/run starttime
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+# scriptname=$0
+# args="$*"
+rundir="$1"
+if ! test -d "$rundir"
+then
+ echo kvm-end-run-stats.sh: Specified run directory does not exist: $rundir
+ exit 1
+fi
+
+T=${TMPDIR-/tmp}/kvm-end-run-stats.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+default_starttime="`get_starttime`"
+starttime="${2-default_starttime}"
+
+echo | tee -a "$rundir/log"
+echo | tee -a "$rundir/log"
+echo " --- `date` Test summary:" | tee -a "$rundir/log"
+echo Results directory: $rundir | tee -a "$rundir/log"
+kcsan-collapse.sh "$rundir" | tee -a "$rundir/log"
+kvm-recheck.sh "$rundir" > $T/kvm-recheck.sh.out 2>&1
+ret=$?
+cat $T/kvm-recheck.sh.out | tee -a "$rundir/log"
+echo " --- Done at `date` (`get_starttime_duration $starttime`) exitcode $ret" | tee -a "$rundir/log"
+exit $ret
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh b/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh
new file mode 100755
index 000000000..88983cba7
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-find-errors.sh
@@ -0,0 +1,79 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Invoke a text editor on all console.log files for all runs with diagnostics,
+# that is, on all such files having a console.log.diags counterpart.
+# Note that both console.log.diags and console.log are passed to the
+# editor (currently defaulting to "vi"), allowing the user to get an
+# idea of what to search for in the console.log file.
+#
+# Usage: kvm-find-errors.sh directory
+#
+# The "directory" above should end with the date/time directory, for example,
+# "tools/testing/selftests/rcutorture/res/2018.02.25-14:27:27".
+# Returns error status reflecting the success (or not) of the specified run.
+#
+# Copyright (C) IBM Corporation, 2018
+#
+# Author: Paul E. McKenney <paulmck@linux.ibm.com>
+
+rundir="${1}"
+if test -z "$rundir" -o ! -d "$rundir"
+then
+ echo Directory "$rundir" not found.
+ echo Usage: $0 directory
+ exit 1
+fi
+editor=${EDITOR-vi}
+
+# Find builds with errors
+files=
+for i in ${rundir}/*/Make.out
+do
+ scenariodir="`dirname $i`"
+ scenariobasedir="`echo ${scenariodir} | sed -e 's/\.[0-9]*$//'`"
+ if egrep -q "error:|warning:|^ld: .*undefined reference to" < $i
+ then
+ egrep "error:|warning:|^ld: .*undefined reference to" < $i > $i.diags
+ files="$files $i.diags $i"
+ elif ! test -f ${scenariobasedir}/vmlinux && ! test -f "${rundir}/re-run"
+ then
+ echo No ${scenariobasedir}/vmlinux file > $i.diags
+ files="$files $i.diags $i"
+ fi
+done
+if test -n "$files"
+then
+ $editor $files
+ editorret=1
+else
+ echo No build errors.
+fi
+if grep -q -e "--build-\?only" < ${rundir}/log && ! test -f "${rundir}/remote-log"
+then
+ echo Build-only run, no console logs to check.
+ exit $editorret
+fi
+
+# Find console logs with errors
+files=
+for i in ${rundir}/*/console.log
+do
+ if test -r $i.diags
+ then
+ files="$files $i.diags $i"
+ fi
+done
+if test -n "$files"
+then
+ $editor $files
+ exit 1
+else
+ echo No errors in console logs.
+ if test -n "$editorret"
+ then
+ exit $editorret
+ else
+ exit 0
+ fi
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-get-cpus-script.sh b/tools/testing/selftests/rcutorture/bin/kvm-get-cpus-script.sh
new file mode 100755
index 000000000..20c7c53c5
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-get-cpus-script.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Create an awk script that takes as input numbers of CPUs and outputs
+# lists of CPUs, one per line in both cases.
+#
+# Usage: kvm-get-cpus-script.sh /path/to/cpu/arrays /path/to/put/script [ /path/to/state ]
+#
+# The CPU arrays are output by kvm-assign-cpus.sh, and are valid awk
+# statements initializing the variables describing the system's topology.
+#
+# The optional state is input by this script (if the file exists and is
+# non-empty), and can also be output by this script.
+
+cpuarrays="${1-/sys/devices/system/node}"
+scriptfile="${2}"
+statefile="${3}"
+
+if ! test -f "$cpuarrays"
+then
+ echo "File not found: $cpuarrays" 1>&2
+ exit 1
+fi
+scriptdir="`dirname "$scriptfile"`"
+if ! test -d "$scriptdir" || ! test -x "$scriptdir" || ! test -w "$scriptdir"
+then
+ echo "Directory not usable for script output: $scriptdir"
+ exit 1
+fi
+
+cat << '___EOF___' > "$scriptfile"
+BEGIN {
+___EOF___
+cat "$cpuarrays" >> "$scriptfile"
+if test -r "$statefile"
+then
+ cat "$statefile" >> "$scriptfile"
+fi
+cat << '___EOF___' >> "$scriptfile"
+}
+
+# Do we have the system architecture to guide CPU affinity?
+function gotcpus()
+{
+ return numnodes != "";
+}
+
+# Return a comma-separated list of the next n CPUs.
+function nextcpus(n, i, s)
+{
+ for (i = 0; i < n; i++) {
+ if (nodecpus[curnode] == "")
+ curnode = 0;
+ if (cpu[curnode][curcpu[curnode]] == "")
+ curcpu[curnode] = 0;
+ if (s != "")
+ s = s ",";
+ s = s cpu[curnode][curcpu[curnode]];
+ curcpu[curnode]++;
+ curnode++
+ }
+ return s;
+}
+
+# Dump out the current node/CPU state so that a later invocation of this
+# script can continue where this one left off. Of course, this only works
+# when a state file was specified and where there was valid sysfs state.
+# Returns 1 if the state was dumped, 0 otherwise.
+#
+# Dumping the state for one system configuration and loading it into
+# another isn't likely to do what you want, whatever that might be.
+function dumpcpustate( i, fn)
+{
+___EOF___
+echo ' fn = "'"$statefile"'";' >> $scriptfile
+cat << '___EOF___' >> "$scriptfile"
+ if (fn != "" && gotcpus()) {
+ print "curnode = " curnode ";" > fn;
+ for (i = 0; i < numnodes; i++)
+ if (curcpu[i] != "")
+ print "curcpu[" i "] = " curcpu[i] ";" >> fn;
+ return 1;
+ }
+ if (fn != "")
+ print "# No CPU state to dump." > fn;
+ return 0;
+}
+___EOF___
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh
new file mode 100755
index 000000000..db2c0e2c8
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-lock.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for locktorture progress.
+#
+# Usage: kvm-recheck-lock.sh resdir
+#
+# Copyright (C) IBM Corporation, 2014
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+i="$1"
+if test -d "$i" -a -r "$i"
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+ncs=`grep "Writes: Total:" $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* Total: //' -e 's/ .*$//'`
+if test -z "$ncs"
+then
+ echo "$configfile -------"
+else
+ title="$configfile ------- $ncs acquisitions/releases"
+ dur=`grep -v '^#' $i/qemu-cmd | sed -e 's/^.* locktorture.shutdown_secs=//' -e 's/ .*$//' 2> /dev/null`
+ if test -z "$dur"
+ then
+ :
+ else
+ ncsps=`awk -v ncs=$ncs -v dur=$dur '
+ BEGIN { print ncs / dur }' < /dev/null`
+ title="$title ($ncsps per second)"
+ fi
+ echo $title
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
new file mode 100755
index 000000000..43e138723
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcu.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for rcutorture progress.
+#
+# Usage: kvm-recheck-rcu.sh resdir
+#
+# Copyright (C) IBM Corporation, 2014
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+i="$1"
+if test -d "$i" -a -r "$i"
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+. functions.sh
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+ngps=`grep ver: $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* ver: //' -e 's/ .*$//'`
+stopstate="`grep 'End-test grace-period state: g' $i/console.log 2> /dev/null |
+ tail -1 | sed -e 's/^\[[ 0-9.]*] //' |
+ awk '{ print \"[\" $1 \" \" $5 \" \" $6 \" \" $7 \"]\"; }' |
+ tr -d '\012\015'`"
+fwdprog="`grep 'rcu_torture_fwd_prog n_max_cbs: ' $i/console.log 2> /dev/null | sed -e 's/^\[[^]]*] //' | sort -k3nr | head -1 | awk '{ print $2 " " $3 }' | tr -d '\015'`"
+if test -z "$ngps"
+then
+ echo "$configfile ------- " $stopstate
+else
+ title="$configfile ------- $ngps GPs"
+ dur=`grep -v '^#' $i/qemu-cmd | sed -e 's/^.* rcutorture.shutdown_secs=//' -e 's/ .*$//'`
+ if test -z "$dur"
+ then
+ :
+ else
+ ngpsps=`awk -v ngps=$ngps -v dur=$dur '
+ BEGIN { print ngps / dur }' < /dev/null`
+ title="$title ($ngpsps/s)"
+ fi
+ echo $title $stopstate $fwdprog
+ nclosecalls=`grep --binary-files=text 'torture: Reader Batch' $i/console.log | tail -1 | \
+ awk -v sum=0 '
+ {
+ for (i = 0; i <= NF; i++) {
+ sum += $i;
+ if ($i ~ /Batch:/) {
+ sum = 0;
+ i = i + 2;
+ }
+ }
+ }
+
+ END {
+ print sum
+ }'`
+ if test -z "$nclosecalls"
+ then
+ exit 0
+ fi
+ if test "$nclosecalls" -eq 0
+ then
+ exit 0
+ fi
+ # Compute number of close calls per tenth of an hour
+ nclosecalls10=`awk -v nclosecalls=$nclosecalls -v dur=$dur 'BEGIN { print int(nclosecalls * 36000 / dur) }' < /dev/null`
+ if test $nclosecalls10 -gt 5 -a $nclosecalls -gt 1
+ then
+ print_bug $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i
+ else
+ print_warning $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i
+ fi
+ echo $nclosecalls "Reader Batch close calls in" $(($dur/60)) minute run: $i > $i/console.log.rcu.diags
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale-ftrace.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale-ftrace.sh
new file mode 100755
index 000000000..d4bec5380
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale-ftrace.sh
@@ -0,0 +1,109 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for rcuscale performance measurements,
+# looking for ftrace data. Exits with 0 if data was found, analyzed, and
+# printed. Intended to be invoked from kvm-recheck-rcuscale.sh after
+# argument checking.
+#
+# Usage: kvm-recheck-rcuscale-ftrace.sh resdir
+#
+# Copyright (C) IBM Corporation, 2016
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+i="$1"
+. functions.sh
+
+if test "`grep -c 'rcu_exp_grace_period.*start' < $i/console.log`" -lt 100
+then
+ exit 10
+fi
+
+sed -e 's/^\[[^]]*]//' < $i/console.log |
+grep 'us : rcu_exp_grace_period' |
+sed -e 's/us : / : /' |
+tr -d '\015' |
+awk '
+$8 == "start" {
+ if (startseq != "")
+ nlost++;
+ starttask = $1;
+ starttime = $3;
+ startseq = $7;
+ seqtask[startseq] = starttask;
+}
+
+$8 == "end" {
+ if (startseq == $7) {
+ curgpdur = $3 - starttime;
+ gptimes[++n] = curgpdur;
+ gptaskcnt[starttask]++;
+ sum += curgpdur;
+ if (curgpdur > 1000)
+ print "Long GP " starttime "us to " $3 "us (" curgpdur "us)";
+ startseq = "";
+ } else {
+ # Lost a message or some such, reset.
+ startseq = "";
+ nlost++;
+ }
+}
+
+$8 == "done" && seqtask[$7] != $1 {
+ piggybackcnt[$1]++;
+}
+
+END {
+ newNR = asort(gptimes);
+ if (newNR <= 0) {
+ print "No ftrace records found???"
+ exit 10;
+ }
+ pct50 = int(newNR * 50 / 100);
+ if (pct50 < 1)
+ pct50 = 1;
+ pct90 = int(newNR * 90 / 100);
+ if (pct90 < 1)
+ pct90 = 1;
+ pct99 = int(newNR * 99 / 100);
+ if (pct99 < 1)
+ pct99 = 1;
+ div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
+ print "Histogram bucket size: " div;
+ last = gptimes[1] - 10;
+ count = 0;
+ for (i = 1; i <= newNR; i++) {
+ current = div * int(gptimes[i] / div);
+ if (last == current) {
+ count++;
+ } else {
+ if (count > 0)
+ print last, count;
+ count = 1;
+ last = current;
+ }
+ }
+ if (count > 0)
+ print last, count;
+ print "Distribution of grace periods across tasks:";
+ for (i in gptaskcnt) {
+ print "\t" i, gptaskcnt[i];
+ nbatches += gptaskcnt[i];
+ }
+ ngps = nbatches;
+ print "Distribution of piggybacking across tasks:";
+ for (i in piggybackcnt) {
+ print "\t" i, piggybackcnt[i];
+ ngps += piggybackcnt[i];
+ }
+ print "Average grace-period duration: " sum / newNR " microseconds";
+ print "Minimum grace-period duration: " gptimes[1];
+ print "50th percentile grace-period duration: " gptimes[pct50];
+ print "90th percentile grace-period duration: " gptimes[pct90];
+ print "99th percentile grace-period duration: " gptimes[pct99];
+ print "Maximum grace-period duration: " gptimes[newNR];
+ print "Grace periods: " ngps + 0 " Batches: " nbatches + 0 " Ratio: " ngps / nbatches " Lost: " nlost + 0;
+ print "Computed from ftrace data.";
+}'
+exit 0
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale.sh
new file mode 100755
index 000000000..b58211317
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-rcuscale.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for rcuscale scalability measurements.
+#
+# Usage: kvm-recheck-rcuscale.sh resdir
+#
+# Copyright (C) IBM Corporation, 2016
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+i="$1"
+if test -d "$i" -a -r "$i"
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
+. functions.sh
+
+if kvm-recheck-rcuscale-ftrace.sh $i
+then
+ # ftrace data was successfully analyzed, call it good!
+ exit 0
+fi
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+
+sed -e 's/^\[[^]]*]//' < $i/console.log |
+awk '
+/-scale: .* gps: .* batches:/ {
+ ngps = $9;
+ nbatches = 1;
+}
+
+/-scale: .*writer-duration/ {
+ gptimes[++n] = $5 / 1000.;
+ sum += $5 / 1000.;
+}
+
+END {
+ newNR = asort(gptimes);
+ if (newNR <= 0) {
+ print "No rcuscale records found???"
+ exit;
+ }
+ pct50 = int(newNR * 50 / 100);
+ if (pct50 < 1)
+ pct50 = 1;
+ pct90 = int(newNR * 90 / 100);
+ if (pct90 < 1)
+ pct90 = 1;
+ pct99 = int(newNR * 99 / 100);
+ if (pct99 < 1)
+ pct99 = 1;
+ div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
+ print "Histogram bucket size: " div;
+ last = gptimes[1] - 10;
+ count = 0;
+ for (i = 1; i <= newNR; i++) {
+ current = div * int(gptimes[i] / div);
+ if (last == current) {
+ count++;
+ } else {
+ if (count > 0)
+ print last, count;
+ count = 1;
+ last = current;
+ }
+ }
+ if (count > 0)
+ print last, count;
+ print "Average grace-period duration: " sum / newNR " microseconds";
+ print "Minimum grace-period duration: " gptimes[1];
+ print "50th percentile grace-period duration: " gptimes[pct50];
+ print "90th percentile grace-period duration: " gptimes[pct90];
+ print "99th percentile grace-period duration: " gptimes[pct99];
+ print "Maximum grace-period duration: " gptimes[newNR];
+ print "Grace periods: " ngps + 0 " Batches: " nbatches + 0 " Ratio: " ngps / nbatches;
+ print "Computed from rcuscale printk output.";
+}'
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-refscale.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-refscale.sh
new file mode 100755
index 000000000..35a463ddd
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-refscale.sh
@@ -0,0 +1,71 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for refscale performance measurements.
+#
+# Usage: kvm-recheck-refscale.sh resdir
+#
+# Copyright (C) IBM Corporation, 2016
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+i="$1"
+if test -d "$i" -a -r "$i"
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
+. functions.sh
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+
+sed -e 's/^\[[^]]*]//' < $i/console.log | tr -d '\015' |
+awk -v configfile="$configfile" '
+/^[ ]*Runs Time\(ns\) *$/ {
+ if (dataphase + 0 == 0) {
+ dataphase = 1;
+ # print configfile, $0;
+ }
+ next;
+}
+
+/[^ ]*[0-9][0-9]* [0-9][0-9]*\.[0-9][0-9]*$/ {
+ if (dataphase == 1) {
+ # print $0;
+ readertimes[++n] = $2;
+ sum += $2;
+ }
+ next;
+}
+
+{
+ if (dataphase == 1)
+ dataphase == 2;
+ next;
+}
+
+END {
+ print configfile " results:";
+ newNR = asort(readertimes);
+ if (newNR <= 0) {
+ print "No refscale records found???"
+ exit;
+ }
+ medianidx = int(newNR / 2);
+ if (newNR == medianidx * 2)
+ medianvalue = (readertimes[medianidx - 1] + readertimes[medianidx]) / 2;
+ else
+ medianvalue = readertimes[medianidx];
+ points = "Points:";
+ for (i = 1; i <= newNR; i++)
+ points = points " " readertimes[i];
+ print points;
+ print "Average reader duration: " sum / newNR " nanoseconds";
+ print "Minimum reader duration: " readertimes[1];
+ print "Median reader duration: " medianvalue;
+ print "Maximum reader duration: " readertimes[newNR];
+ print "Computed from refscale printk output.";
+}'
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck-scf.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck-scf.sh
new file mode 100755
index 000000000..3afa5c6ed
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck-scf.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Analyze a given results directory for rcutorture progress.
+#
+# Usage: kvm-recheck-rcu.sh resdir
+#
+# Copyright (C) Facebook, 2020
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+i="$1"
+if test -d "$i" -a -r "$i"
+then
+ :
+else
+ echo Unreadable results directory: $i
+ exit 1
+fi
+. functions.sh
+
+configfile=`echo $i | sed -e 's/^.*\///'`
+nscfs="`grep 'scf_invoked_count ver:' $i/console.log 2> /dev/null | tail -1 | sed -e 's/^.* scf_invoked_count ver: //' -e 's/ .*$//' | tr -d '\015'`"
+if test -z "$nscfs"
+then
+ echo "$configfile ------- "
+else
+ dur="`grep -v '^#' $i/qemu-cmd | sed -e 's/^.* scftorture.shutdown_secs=//' -e 's/ .*$//' 2> /dev/null`"
+ if test -z "$dur"
+ then
+ rate=""
+ else
+ nscfss=`awk -v nscfs=$nscfs -v dur=$dur '
+ BEGIN { print nscfs / dur }' < /dev/null`
+ rate=" ($nscfss/s)"
+ fi
+ echo "${configfile} ------- ${nscfs} SCF handler invocations$rate"
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
new file mode 100755
index 000000000..0789c5606
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-recheck.sh
@@ -0,0 +1,110 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Given the results directories for previous KVM-based torture runs,
+# check the build and console output for errors. Given a directory
+# containing results directories, this recursively checks them all.
+#
+# Usage: kvm-recheck.sh resdir ...
+#
+# Returns status reflecting the success or not of the last run specified.
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+T=/tmp/kvm-recheck.sh.$$
+trap 'rm -f $T' 0 2
+
+PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
+. functions.sh
+for rd in "$@"
+do
+ firsttime=1
+ dirs=`find $rd -name Make.defconfig.out -print | sort | sed -e 's,/[^/]*$,,' | sort -u`
+ for i in $dirs
+ do
+ if test -n "$firsttime"
+ then
+ firsttime=""
+ resdir=`echo $i | sed -e 's,/$,,' -e 's,/[^/]*$,,'`
+ head -1 $resdir/log
+ fi
+ TORTURE_SUITE="`cat $i/../torture_suite`"
+ configfile=`echo $i | sed -e 's,^.*/,,'`
+ rm -f $i/console.log.*.diags
+ case "${TORTURE_SUITE}" in
+ X*)
+ ;;
+ *)
+ kvm-recheck-${TORTURE_SUITE}.sh $i
+ esac
+ if test -f "$i/qemu-retval" && test "`cat $i/qemu-retval`" -ne 0 && test "`cat $i/qemu-retval`" -ne 137
+ then
+ echo QEMU error, output:
+ cat $i/qemu-output
+ elif test -f "$i/console.log"
+ then
+ if test -f "$i/qemu-retval" && test "`cat $i/qemu-retval`" -eq 137
+ then
+ echo QEMU killed
+ fi
+ configcheck.sh $i/.config $i/ConfigFragment > $T 2>&1
+ cat $T
+ if test -r $i/Make.oldconfig.err
+ then
+ cat $i/Make.oldconfig.err
+ fi
+ parse-build.sh $i/Make.out $configfile
+ parse-console.sh $i/console.log $configfile
+ if test -r $i/Warnings
+ then
+ cat $i/Warnings
+ fi
+ else
+ if test -f "$i/buildonly"
+ then
+ echo Build-only run, no boot/test
+ configcheck.sh $i/.config $i/ConfigFragment
+ parse-build.sh $i/Make.out $configfile
+ elif test -f "$i/qemu-cmd"
+ then
+ print_bug qemu failed
+ echo " $i"
+ else
+ print_bug Build failed
+ echo " $i"
+ fi
+ fi
+ done
+ if test -f "$rd/kcsan.sum"
+ then
+ if ! test -f $T
+ then
+ :
+ elif grep -q CONFIG_KCSAN=y $T
+ then
+ echo "Compiler or architecture does not support KCSAN!"
+ echo Did you forget to switch your compiler with '--kmake-arg CC=<cc-that-supports-kcsan>'?
+ elif test -s "$rd/kcsan.sum"
+ then
+ echo KCSAN summary in $rd/kcsan.sum
+ else
+ echo Clean KCSAN run in $rd
+ fi
+ fi
+done
+EDITOR=echo kvm-find-errors.sh "${@: -1}" > $T 2>&1
+builderrors="`tr ' ' '\012' < $T | grep -c '/Make.out.diags'`"
+if test "$builderrors" -gt 0
+then
+ echo $builderrors runs with build errors.
+ ret=1
+fi
+runerrors="`tr ' ' '\012' < $T | grep -c '/console.log.diags'`"
+if test "$runerrors" -gt 0
+then
+ echo $runerrors runs with runtime errors.
+ ret=2
+fi
+exit $ret
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-remote-noreap.sh b/tools/testing/selftests/rcutorture/bin/kvm-remote-noreap.sh
new file mode 100755
index 000000000..014ce6826
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-remote-noreap.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Periodically scan a directory tree to prevent files from being reaped
+# by systemd and friends on long runs.
+#
+# Usage: kvm-remote-noreap.sh pathname
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+pathname="$1"
+if test "$pathname" = ""
+then
+ echo Usage: kvm-remote-noreap.sh pathname
+ exit 1
+fi
+if ! test -d "$pathname"
+then
+ echo Usage: kvm-remote-noreap.sh pathname
+ echo " pathname must be a directory."
+ exit 2
+fi
+
+while test -d "$pathname"
+do
+ find "$pathname" -type f -exec touch -c {} \; > /dev/null 2>&1
+ sleep 30
+done
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-remote.sh b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh
new file mode 100755
index 000000000..9f0a5d5ff
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-remote.sh
@@ -0,0 +1,275 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Run a series of tests on remote systems under KVM.
+#
+# Usage: kvm-remote.sh "systems" [ <kvm.sh args> ]
+# kvm-remote.sh "systems" /path/to/old/run [ <kvm-again.sh args> ]
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+scriptname=$0
+args="$*"
+
+if ! test -d tools/testing/selftests/rcutorture/bin
+then
+ echo $scriptname must be run from top-level directory of kernel source tree.
+ exit 1
+fi
+
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+
+starttime="`get_starttime`"
+
+systems="$1"
+if test -z "$systems"
+then
+ echo $scriptname: Empty list of systems will go nowhere good, giving up.
+ exit 1
+fi
+shift
+
+# Pathnames:
+# T: /tmp/kvm-remote.sh.$$
+# resdir: /tmp/kvm-remote.sh.$$/res
+# rundir: /tmp/kvm-remote.sh.$$/res/$ds ("-remote" suffix)
+# oldrun: `pwd`/tools/testing/.../res/$otherds
+#
+# Pathname segments:
+# TD: kvm-remote.sh.$$
+# ds: yyyy.mm.dd-hh.mm.ss-remote
+
+TD=kvm-remote.sh.$$
+T=${TMPDIR-/tmp}/$TD
+trap 'rm -rf $T' 0
+mkdir $T
+
+resdir="$T/res"
+ds=`date +%Y.%m.%d-%H.%M.%S`-remote
+rundir=$resdir/$ds
+echo Results directory: $rundir
+echo $scriptname $args
+if echo $1 | grep -q '^--'
+then
+ # Fresh build. Create a datestamp unless the caller supplied one.
+ datestamp="`echo "$@" | awk -v ds="$ds" '{
+ for (i = 1; i < NF; i++) {
+ if ($i == "--datestamp") {
+ ds = "";
+ break;
+ }
+ }
+ if (ds != "")
+ print "--datestamp " ds;
+ }'`"
+ kvm.sh --remote "$@" $datestamp --buildonly > $T/kvm.sh.out 2>&1
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ echo $scriptname: kvm.sh failed exit code $?
+ cat $T/kvm.sh.out
+ exit 2
+ fi
+ oldrun="`grep -m 1 "^Results directory: " $T/kvm.sh.out | awk '{ print $3 }'`"
+ touch "$oldrun/remote-log"
+ echo $scriptname $args >> "$oldrun/remote-log"
+ echo | tee -a "$oldrun/remote-log"
+ echo " ----" kvm.sh output: "(`date`)" | tee -a "$oldrun/remote-log"
+ cat $T/kvm.sh.out | tee -a "$oldrun/remote-log"
+ # We are going to run this, so remove the buildonly files.
+ rm -f "$oldrun"/*/buildonly
+ kvm-again.sh $oldrun --dryrun --remote --rundir "$rundir" > $T/kvm-again.sh.out 2>&1
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log"
+ cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log"
+ exit 2
+ fi
+else
+ # Re-use old run.
+ oldrun="$1"
+ if ! echo $oldrun | grep -q '^/'
+ then
+ oldrun="`pwd`/$oldrun"
+ fi
+ shift
+ touch "$oldrun/remote-log"
+ echo $scriptname $args >> "$oldrun/remote-log"
+ kvm-again.sh "$oldrun" "$@" --dryrun --remote --rundir "$rundir" > $T/kvm-again.sh.out 2>&1
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ echo $scriptname: kvm-again.sh failed exit code $? | tee -a "$oldrun/remote-log"
+ cat $T/kvm-again.sh.out | tee -a "$oldrun/remote-log"
+ exit 2
+ fi
+ cp -a "$rundir" "$RCUTORTURE/res/"
+ oldrun="$RCUTORTURE/res/$ds"
+fi
+echo | tee -a "$oldrun/remote-log"
+echo " ----" kvm-again.sh output: "(`date`)" | tee -a "$oldrun/remote-log"
+cat $T/kvm-again.sh.out
+echo | tee -a "$oldrun/remote-log"
+echo Remote run directory: $rundir | tee -a "$oldrun/remote-log"
+echo Local build-side run directory: $oldrun | tee -a "$oldrun/remote-log"
+
+# Create the kvm-remote-N.sh scripts in the bin directory.
+awk < "$rundir"/scenarios -v dest="$T/bin" -v rundir="$rundir" '
+{
+ n = $1;
+ sub(/\./, "", n);
+ fn = dest "/kvm-remote-" n ".sh"
+ print "kvm-remote-noreap.sh " rundir " &" > fn;
+ scenarios = "";
+ for (i = 2; i <= NF; i++)
+ scenarios = scenarios " " $i;
+ print "kvm-test-1-run-batch.sh" scenarios >> fn;
+ print "sync" >> fn;
+ print "rm " rundir "/remote.run" >> fn;
+}'
+chmod +x $T/bin/kvm-remote-*.sh
+( cd "`dirname $T`"; tar -chzf $T/binres.tgz "$TD/bin" "$TD/res" )
+
+# Check first to avoid the need for cleanup for system-name typos
+for i in $systems
+do
+ ncpus="`ssh -o BatchMode=yes $i getconf _NPROCESSORS_ONLN 2> /dev/null`"
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ echo System $i unreachable, giving up. | tee -a "$oldrun/remote-log"
+ exit 4
+ fi
+ echo $i: $ncpus CPUs " " `date` | tee -a "$oldrun/remote-log"
+done
+
+# Download and expand the tarball on all systems.
+echo Build-products tarball: `du -h $T/binres.tgz` | tee -a "$oldrun/remote-log"
+for i in $systems
+do
+ echo Downloading tarball to $i `date` | tee -a "$oldrun/remote-log"
+ cat $T/binres.tgz | ssh -o BatchMode=yes $i "cd /tmp; tar -xzf -"
+ ret=$?
+ tries=0
+ while test "$ret" -ne 0
+ do
+ echo Unable to download $T/binres.tgz to system $i, waiting and then retrying. $tries prior retries. | tee -a "$oldrun/remote-log"
+ sleep 60
+ cat $T/binres.tgz | ssh -o BatchMode=yes $i "cd /tmp; tar -xzf -"
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ if test "$tries" > 5
+ then
+ echo Unable to download $T/binres.tgz to system $i, giving up. | tee -a "$oldrun/remote-log"
+ exit 10
+ fi
+ fi
+ tries=$((tries+1))
+ done
+done
+
+# Function to check for presence of a file on the specified system.
+# Complain if the system cannot be reached, and retry after a wait.
+# Currently just waits forever if a machine disappears.
+#
+# Usage: checkremotefile system pathname
+checkremotefile () {
+ local ret
+ local sleeptime=60
+
+ while :
+ do
+ ssh -o BatchMode=yes $1 "test -f \"$2\""
+ ret=$?
+ if test "$ret" -eq 255
+ then
+ echo " ---" ssh failure to $1 checking for file $2, retry after $sleeptime seconds. `date` | tee -a "$oldrun/remote-log"
+ elif test "$ret" -eq 0
+ then
+ return 0
+ elif test "$ret" -eq 1
+ then
+ echo " ---" File \"$2\" not found: ssh $1 test -f \"$2\" | tee -a "$oldrun/remote-log"
+ return 1
+ else
+ echo " ---" Exit code $ret: ssh $1 test -f \"$2\", retry after $sleeptime seconds. `date` | tee -a "$oldrun/remote-log"
+ return $ret
+ fi
+ sleep $sleeptime
+ done
+}
+
+# Function to start batches on idle remote $systems
+#
+# Usage: startbatches curbatch nbatches
+#
+# Batches are numbered starting at 1. Returns the next batch to start.
+# Be careful to redirect all debug output to FD 2 (stderr).
+startbatches () {
+ local curbatch="$1"
+ local nbatches="$2"
+ local ret
+
+ # Each pass through the following loop examines one system.
+ for i in $systems
+ do
+ if test "$curbatch" -gt "$nbatches"
+ then
+ echo $((nbatches + 1))
+ return 0
+ fi
+ if checkremotefile "$i" "$resdir/$ds/remote.run" 1>&2
+ then
+ continue # System still running last test, skip.
+ fi
+ ssh -o BatchMode=yes "$i" "cd \"$resdir/$ds\"; touch remote.run; PATH=\"$T/bin:$PATH\" nohup kvm-remote-$curbatch.sh > kvm-remote-$curbatch.sh.out 2>&1 &" 1>&2
+ ret=$?
+ if test "$ret" -ne 0
+ then
+ echo ssh $i failed: exitcode $ret 1>&2
+ exit 11
+ fi
+ echo " ----" System $i Batch `head -n $curbatch < "$rundir"/scenarios | tail -1` `date` 1>&2
+ curbatch=$((curbatch + 1))
+ done
+ echo $curbatch
+}
+
+# Launch all the scenarios.
+nbatches="`wc -l "$rundir"/scenarios | awk '{ print $1 }'`"
+curbatch=1
+while test "$curbatch" -le "$nbatches"
+do
+ startbatches $curbatch $nbatches > $T/curbatch 2> $T/startbatches.stderr
+ curbatch="`cat $T/curbatch`"
+ if test -s "$T/startbatches.stderr"
+ then
+ cat "$T/startbatches.stderr" | tee -a "$oldrun/remote-log"
+ fi
+ if test "$curbatch" -le "$nbatches"
+ then
+ sleep 30
+ fi
+done
+echo All batches started. `date` | tee -a "$oldrun/remote-log"
+
+# Wait for all remaining scenarios to complete and collect results.
+for i in $systems
+do
+ echo " ---" Waiting for $i `date` | tee -a "$oldrun/remote-log"
+ while checkremotefile "$i" "$resdir/$ds/remote.run"
+ do
+ sleep 30
+ done
+ echo " ---" Collecting results from $i `date` | tee -a "$oldrun/remote-log"
+ ( cd "$oldrun"; ssh -o BatchMode=yes $i "cd $rundir; tar -czf - kvm-remote-*.sh.out */console.log */kvm-test-1-run*.sh.out */qemu[_-]pid */qemu-retval */qemu-affinity; rm -rf $T > /dev/null 2>&1" | tar -xzf - )
+done
+
+( kvm-end-run-stats.sh "$oldrun" "$starttime"; echo $? > $T/exitcode ) | tee -a "$oldrun/remote-log"
+exit "`cat $T/exitcode`"
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh
new file mode 100755
index 000000000..1e29d6565
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh
@@ -0,0 +1,91 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Carry out a kvm-based run for the specified batch of scenarios, which
+# might have been built by --build-only kvm.sh run.
+#
+# Usage: kvm-test-1-run-batch.sh SCENARIO [ SCENARIO ... ]
+#
+# Each SCENARIO is the name of a directory in the current directory
+# containing a ready-to-run qemu-cmd file.
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+T=${TMPDIR-/tmp}/kvm-test-1-run-batch.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+echo ---- Running batch $*
+# Check arguments
+runfiles=
+for i in "$@"
+do
+ if ! echo $i | grep -q '^[^/.a-z]\+\(\.[0-9]\+\)\?$'
+ then
+ echo Bad scenario name: \"$i\" 1>&2
+ exit 1
+ fi
+ if ! test -d "$i"
+ then
+ echo Scenario name not a directory: \"$i\" 1>&2
+ exit 2
+ fi
+ if ! test -f "$i/qemu-cmd"
+ then
+ echo Scenario lacks a command file: \"$i/qemu-cmd\" 1>&2
+ exit 3
+ fi
+ rm -f $i/build.*
+ touch $i/build.run
+ runfiles="$runfiles $i/build.run"
+done
+
+# Extract settings from the qemu-cmd file.
+grep '^#' $1/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
+. $T/qemu-cmd-settings
+
+# Start up jitter, start each scenario, wait, end jitter.
+echo ---- System running test: `uname -a`
+echo ---- Starting kernels. `date` | tee -a log
+$TORTURE_JITTER_START
+kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
+for i in "$@"
+do
+ echo ---- System running test: `uname -a` > $i/kvm-test-1-run-qemu.sh.out
+ echo > $i/kvm-test-1-run-qemu.sh.out
+ export TORTURE_AFFINITY=
+ kvm-get-cpus-script.sh $T/cpuarray.awk $T/cpubatches.awk $T/cpustate
+ cat << ' ___EOF___' >> $T/cpubatches.awk
+ END {
+ affinitylist = "";
+ if (!gotcpus()) {
+ print "echo No CPU-affinity information, so no taskset command.";
+ } else if (cpu_count !~ /^[0-9][0-9]*$/) {
+ print "echo " scenario ": Bogus number of CPUs (old qemu-cmd?), so no taskset command.";
+ } else {
+ affinitylist = nextcpus(cpu_count);
+ if (!(affinitylist ~ /^[0-9,-][0-9,-]*$/))
+ print "echo " scenario ": Bogus CPU-affinity information, so no taskset command.";
+ else if (!dumpcpustate())
+ print "echo " scenario ": Could not dump state, so no taskset command.";
+ else
+ print "export TORTURE_AFFINITY=" affinitylist;
+ }
+ }
+ ___EOF___
+ cpu_count="`grep '# TORTURE_CPU_COUNT=' $i/qemu-cmd | sed -e 's/^.*=//'`"
+ affinity_export="`awk -f $T/cpubatches.awk -v cpu_count="$cpu_count" -v scenario=$i < /dev/null`"
+ $affinity_export
+ kvm-test-1-run-qemu.sh $i >> $i/kvm-test-1-run-qemu.sh.out 2>&1 &
+done
+for i in $runfiles
+do
+ while ls $i > /dev/null 2>&1
+ do
+ :
+ done
+done
+echo ---- All kernel runs complete. `date` | tee -a log
+$TORTURE_JITTER_STOP
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
new file mode 100755
index 000000000..44280582c
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
@@ -0,0 +1,185 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Carry out a kvm-based run for the specified qemu-cmd file, which might
+# have been generated by --build-only kvm.sh run.
+#
+# Usage: kvm-test-1-run-qemu.sh qemu-cmd-dir
+#
+# qemu-cmd-dir provides the directory containing qemu-cmd file.
+# This is assumed to be of the form prefix/ds/scenario, where
+# "ds" is the top-level date-stamped directory and "scenario"
+# is the scenario name. Any required adjustments to this file
+# must have been made by the caller. The shell-command comments
+# at the end of the qemu-cmd file are not optional.
+#
+# Copyright (C) 2021 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+T=${TMPDIR-/tmp}/kvm-test-1-run-qemu.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+resdir="$1"
+if ! test -d "$resdir"
+then
+ echo $0: Nonexistent directory: $resdir
+ exit 1
+fi
+if ! test -f "$resdir/qemu-cmd"
+then
+ echo $0: Nonexistent qemu-cmd file: $resdir/qemu-cmd
+ exit 1
+fi
+
+echo ' ---' `date`: Starting kernel, PID $$
+
+# Obtain settings from the qemu-cmd file.
+grep '^#' $resdir/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
+. $T/qemu-cmd-settings
+
+# Decorate qemu-cmd with affinity, redirection, backgrounding, and PID capture
+taskset_command=
+if test -n "$TORTURE_AFFINITY"
+then
+ taskset_command="taskset -c $TORTURE_AFFINITY "
+fi
+sed -e 's/^[^#].*$/'"$taskset_command"'& 2>\&1 \&/' < $resdir/qemu-cmd > $T/qemu-cmd
+echo 'qemu_pid=$!' >> $T/qemu-cmd
+echo 'echo $qemu_pid > $resdir/qemu-pid' >> $T/qemu-cmd
+echo 'taskset -c -p $qemu_pid > $resdir/qemu-affinity' >> $T/qemu-cmd
+
+# In case qemu refuses to run...
+echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
+
+# Attempt to run qemu
+kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
+( . $T/qemu-cmd; wait `cat $resdir/qemu-pid`; echo $? > $resdir/qemu-retval ) &
+commandcompleted=0
+if test -z "$TORTURE_KCONFIG_GDB_ARG"
+then
+ sleep 10 # Give qemu's pid a chance to reach the file
+ if test -s "$resdir/qemu-pid"
+ then
+ qemu_pid=`cat "$resdir/qemu-pid"`
+ echo Monitoring qemu job at pid $qemu_pid `date`
+ else
+ qemu_pid=""
+ echo Monitoring qemu job at yet-as-unknown pid `date`
+ fi
+fi
+if test -n "$TORTURE_KCONFIG_GDB_ARG"
+then
+ base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
+ if ! test -f $base_resdir/vmlinux
+ then
+ base_resdir="`cat re-run`/$resdir"
+ if ! test -f $base_resdir/vmlinux
+ then
+ base_resdir=/path/to
+ fi
+ fi
+ echo Waiting for you to attach a debug session, for example: > /dev/tty
+ echo " gdb $base_resdir/vmlinux" > /dev/tty
+ echo 'After symbols load and the "(gdb)" prompt appears:' > /dev/tty
+ echo " target remote :1234" > /dev/tty
+ echo " continue" > /dev/tty
+ kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
+fi
+while :
+do
+ if test -z "$qemu_pid" && test -s "$resdir/qemu-pid"
+ then
+ qemu_pid=`cat "$resdir/qemu-pid"`
+ fi
+ kruntime=`gawk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
+ if test -z "$qemu_pid" || kill -0 "$qemu_pid" > /dev/null 2>&1
+ then
+ if test -n "$TORTURE_KCONFIG_GDB_ARG"
+ then
+ :
+ elif test $kruntime -ge $seconds || test -f "$resdir/../STOP.1"
+ then
+ break;
+ fi
+ sleep 1
+ else
+ commandcompleted=1
+ if test $kruntime -lt $seconds
+ then
+ echo Completed in $kruntime vs. $seconds >> $resdir/Warnings 2>&1
+ grep "^(qemu) qemu:" $resdir/kvm-test-1-run.sh.out >> $resdir/Warnings 2>&1
+ killpid="`sed -n "s/^(qemu) qemu: terminating on signal [0-9]* from pid \([0-9]*\).*$/\1/p" $resdir/Warnings`"
+ if test -n "$killpid"
+ then
+ echo "ps -fp $killpid" >> $resdir/Warnings 2>&1
+ ps -fp $killpid >> $resdir/Warnings 2>&1
+ fi
+ else
+ echo ' ---' `date`: "Kernel done"
+ fi
+ break
+ fi
+done
+if test -z "$qemu_pid" && test -s "$resdir/qemu-pid"
+then
+ qemu_pid=`cat "$resdir/qemu-pid"`
+fi
+if test $commandcompleted -eq 0 && test -n "$qemu_pid"
+then
+ if ! test -f "$resdir/../STOP.1"
+ then
+ echo Grace period for qemu job at pid $qemu_pid `date`
+ fi
+ oldline="`tail $resdir/console.log`"
+ while :
+ do
+ if test -f "$resdir/../STOP.1"
+ then
+ echo "PID $qemu_pid killed due to run STOP.1 request `date`" >> $resdir/Warnings 2>&1
+ kill -KILL $qemu_pid
+ break
+ fi
+ kruntime=`gawk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
+ if kill -0 $qemu_pid > /dev/null 2>&1
+ then
+ :
+ else
+ break
+ fi
+ must_continue=no
+ newline="`tail $resdir/console.log`"
+ if test "$newline" != "$oldline" && echo $newline | grep -q ' [0-9]\+us : '
+ then
+ must_continue=yes
+ fi
+ last_ts="`tail $resdir/console.log | grep '^\[ *[0-9]\+\.[0-9]\+]' | tail -1 | sed -e 's/^\[ *//' -e 's/\..*$//'`"
+ if test -z "$last_ts"
+ then
+ last_ts=0
+ fi
+ if test "$newline" != "$oldline" && test "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE)) && test "$last_ts" -gt "$TORTURE_SHUTDOWN_GRACE"
+ then
+ must_continue=yes
+ if test $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))
+ then
+ echo Continuing at console.log time $last_ts \"`tail -n 1 $resdir/console.log`\" `date`
+ fi
+ fi
+ if test $must_continue = no && test $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))
+ then
+ echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds `date`" >> $resdir/Warnings 2>&1
+ kill -KILL $qemu_pid
+ break
+ fi
+ oldline=$newline
+ sleep 10
+ done
+elif test -z "$qemu_pid"
+then
+ echo Unknown PID, cannot kill qemu command
+fi
+
+# Tell the script that this run is done.
+rm -f $resdir/build.run
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
new file mode 100755
index 000000000..f4c8055db
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh
@@ -0,0 +1,218 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Run a kvm-based test of the specified tree on the specified configs.
+# Fully automated run and error checking, no graphics console.
+#
+# Execute this in the source tree. Do not run it as a background task
+# because qemu does not seem to like that much.
+#
+# Usage: kvm-test-1-run.sh config resdir seconds qemu-args boot_args_in
+#
+# qemu-args defaults to "-enable-kvm -nographic", along with arguments
+# specifying the number of CPUs and other options
+# generated from the underlying CPU architecture.
+# boot_args_in defaults to value returned by the per_version_boot_params
+# shell function.
+#
+# Anything you specify for either qemu-args or boot_args_in is appended to
+# the default values. The "-smp" value is deduced from the contents of
+# the config fragment.
+#
+# More sophisticated argument parsing is clearly needed.
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+T=${TMPDIR-/tmp}/kvm-test-1-run.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+. functions.sh
+. $CONFIGFRAG/ver_functions.sh
+
+config_template=${1}
+config_dir=`echo $config_template | sed -e 's,/[^/]*$,,'`
+title=`echo $config_template | sed -e 's/^.*\///'`
+resdir=${2}
+if test -z "$resdir" -o ! -d "$resdir" -o ! -w "$resdir"
+then
+ echo "kvm-test-1-run.sh :$resdir: Not a writable directory, cannot store results into it"
+ exit 1
+fi
+echo ' ---' `date`: Starting build, PID $$
+echo ' ---' Kconfig fragment at: $config_template >> $resdir/log
+touch $resdir/ConfigFragment.input
+
+# Combine additional Kconfig options into an existing set such that
+# newer options win. The first argument is the Kconfig source ID, the
+# second the to-be-updated file within $T, and the third and final the
+# list of additional Kconfig options. Note that a $2.tmp file is
+# created when doing the update.
+config_override_param () {
+ if test -n "$3"
+ then
+ echo $3 | sed -e 's/^ *//' -e 's/ *$//' | tr -s " " "\012" > $T/Kconfig_args
+ echo " --- $1" >> $resdir/ConfigFragment.input
+ cat $T/Kconfig_args >> $resdir/ConfigFragment.input
+ config_override.sh $T/$2 $T/Kconfig_args > $T/$2.tmp
+ mv $T/$2.tmp $T/$2
+ # Note that "#CHECK#" is not permitted on commandline.
+ fi
+}
+
+echo > $T/KcList
+config_override_param "$config_dir/CFcommon" KcList "`cat $config_dir/CFcommon 2> /dev/null`"
+config_override_param "$config_template" KcList "`cat $config_template 2> /dev/null`"
+config_override_param "--gdb options" KcList "$TORTURE_KCONFIG_GDB_ARG"
+config_override_param "--kasan options" KcList "$TORTURE_KCONFIG_KASAN_ARG"
+config_override_param "--kcsan options" KcList "$TORTURE_KCONFIG_KCSAN_ARG"
+config_override_param "--kconfig argument" KcList "$TORTURE_KCONFIG_ARG"
+cp $T/KcList $resdir/ConfigFragment
+
+base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
+if test "$base_resdir" != "$resdir" && test -f $base_resdir/bzImage && test -f $base_resdir/vmlinux
+then
+ # Rerunning previous test, so use that test's kernel.
+ QEMU="`identify_qemu $base_resdir/vmlinux`"
+ BOOT_IMAGE="`identify_boot_image $QEMU`"
+ KERNEL=$base_resdir/${BOOT_IMAGE##*/} # use the last component of ${BOOT_IMAGE}
+ ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh
+ ln -s $base_resdir/.config $resdir # for kvm-recheck.sh
+ # Arch-independent indicator
+ touch $resdir/builtkernel
+elif test "$base_resdir" != "$resdir"
+then
+ # Rerunning previous test for which build failed
+ ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh
+ ln -s $base_resdir/.config $resdir # for kvm-recheck.sh
+ echo Initial build failed, not running KVM, see $resdir.
+ if test -f $resdir/build.wait
+ then
+ mv $resdir/build.wait $resdir/build.ready
+ fi
+ exit 1
+elif kvm-build.sh $T/KcList $resdir
+then
+ # Had to build a kernel for this test.
+ QEMU="`identify_qemu vmlinux`"
+ BOOT_IMAGE="`identify_boot_image $QEMU`"
+ cp vmlinux $resdir
+ cp .config $resdir
+ cp Module.symvers $resdir > /dev/null || :
+ cp System.map $resdir > /dev/null || :
+ if test -n "$BOOT_IMAGE"
+ then
+ cp $BOOT_IMAGE $resdir
+ KERNEL=$resdir/${BOOT_IMAGE##*/}
+ # Arch-independent indicator
+ touch $resdir/builtkernel
+ else
+ echo No identifiable boot image, not running KVM, see $resdir.
+ echo Do the torture scripts know about your architecture?
+ fi
+ parse-build.sh $resdir/Make.out $title
+else
+ # Build failed.
+ cp .config $resdir || :
+ echo Build failed, not running KVM, see $resdir.
+ if test -f $resdir/build.wait
+ then
+ mv $resdir/build.wait $resdir/build.ready
+ fi
+ exit 1
+fi
+if test -f $resdir/build.wait
+then
+ mv $resdir/build.wait $resdir/build.ready
+fi
+while test -f $resdir/build.ready
+do
+ sleep 1
+done
+seconds=$3
+qemu_args=$4
+boot_args_in=$5
+
+if test -z "$TORTURE_BUILDONLY"
+then
+ echo ' ---' `date`: Starting kernel
+fi
+
+# Generate -smp qemu argument.
+qemu_args="-enable-kvm -nographic $qemu_args"
+cpu_count=`configNR_CPUS.sh $resdir/ConfigFragment`
+cpu_count=`configfrag_boot_cpus "$boot_args_in" "$config_template" "$cpu_count"`
+if test "$cpu_count" -gt "$TORTURE_ALLOTED_CPUS"
+then
+ echo CPU count limited from $cpu_count to $TORTURE_ALLOTED_CPUS | tee -a $resdir/Warnings
+ cpu_count=$TORTURE_ALLOTED_CPUS
+fi
+qemu_args="`specify_qemu_cpus "$QEMU" "$qemu_args" "$cpu_count"`"
+qemu_args="`specify_qemu_net "$qemu_args"`"
+
+# Generate architecture-specific and interaction-specific qemu arguments
+qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$resdir/console.log"`"
+
+# Generate qemu -append arguments
+qemu_append="`identify_qemu_append "$QEMU"`"
+
+# Pull in Kconfig-fragment boot parameters
+boot_args="`configfrag_boot_params "$boot_args_in" "$config_template"`"
+# Generate kernel-version-specific boot parameters
+boot_args="`per_version_boot_params "$boot_args" $resdir/.config $seconds`"
+if test -n "$TORTURE_BOOT_GDB_ARG"
+then
+ boot_args="$boot_args $TORTURE_BOOT_GDB_ARG"
+fi
+
+# Give bare-metal advice
+modprobe_args="`echo $boot_args | tr -s ' ' '\012' | grep "^$TORTURE_MOD\." | sed -e "s/$TORTURE_MOD\.//g"`"
+kboot_args="`echo $boot_args | tr -s ' ' '\012' | grep -v "^$TORTURE_MOD\."`"
+testid_txt="`dirname $resdir`/testid.txt"
+touch $resdir/bare-metal
+echo To run this scenario on bare metal: >> $resdir/bare-metal
+echo >> $resdir/bare-metal
+echo " 1." Set your bare-metal build tree to the state shown in this file: >> $resdir/bare-metal
+echo " " $testid_txt >> $resdir/bare-metal
+echo " 2." Update your bare-metal build tree"'"s .config based on this file: >> $resdir/bare-metal
+echo " " $resdir/ConfigFragment >> $resdir/bare-metal
+echo " 3." Make the bare-metal kernel"'"s build system aware of your .config updates: >> $resdir/bare-metal
+echo " " $ 'yes "" | make oldconfig' >> $resdir/bare-metal
+echo " 4." Build your bare-metal kernel. >> $resdir/bare-metal
+echo " 5." Boot your bare-metal kernel with the following parameters: >> $resdir/bare-metal
+echo " " $kboot_args >> $resdir/bare-metal
+echo " 6." Start the test with the following command: >> $resdir/bare-metal
+echo " " $ modprobe $TORTURE_MOD $modprobe_args >> $resdir/bare-metal
+echo " 7." After some time, end the test with the following command: >> $resdir/bare-metal
+echo " " $ rmmod $TORTURE_MOD >> $resdir/bare-metal
+echo " 8." Copy your bare-metal kernel"'"s .config file, overwriting this file: >> $resdir/bare-metal
+echo " " $resdir/.config >> $resdir/bare-metal
+echo " 9." Copy the console output from just before the modprobe to just after >> $resdir/bare-metal
+echo " " the rmmod into this file: >> $resdir/bare-metal
+echo " " $resdir/console.log >> $resdir/bare-metal
+echo "10." Check for runtime errors using the following command: >> $resdir/bare-metal
+echo " " $ tools/testing/selftests/rcutorture/bin/kvm-recheck.sh `dirname $resdir` >> $resdir/bare-metal
+echo >> $resdir/bare-metal
+echo Some of the above steps may be skipped if you build your bare-metal >> $resdir/bare-metal
+echo kernel here: `head -n 1 $testid_txt | sed -e 's/^Build directory: //'` >> $resdir/bare-metal
+
+echo $QEMU $qemu_args -m $TORTURE_QEMU_MEM -kernel $KERNEL -append \"$qemu_append $boot_args\" $TORTURE_QEMU_GDB_ARG > $resdir/qemu-cmd
+echo "# TORTURE_SHUTDOWN_GRACE=$TORTURE_SHUTDOWN_GRACE" >> $resdir/qemu-cmd
+echo "# seconds=$seconds" >> $resdir/qemu-cmd
+echo "# TORTURE_KCONFIG_GDB_ARG=\"$TORTURE_KCONFIG_GDB_ARG\"" >> $resdir/qemu-cmd
+echo "# TORTURE_JITTER_START=\"$TORTURE_JITTER_START\"" >> $resdir/qemu-cmd
+echo "# TORTURE_JITTER_STOP=\"$TORTURE_JITTER_STOP\"" >> $resdir/qemu-cmd
+echo "# TORTURE_TRUST_MAKE=\"$TORTURE_TRUST_MAKE\"; export TORTURE_TRUST_MAKE" >> $resdir/qemu-cmd
+echo "# TORTURE_CPU_COUNT=$cpu_count" >> $resdir/qemu-cmd
+
+if test -n "$TORTURE_BUILDONLY"
+then
+ echo Build-only run specified, boot/test omitted.
+ touch $resdir/buildonly
+ exit 0
+fi
+
+kvm-test-1-run-qemu.sh $resdir
+parse-console.sh $resdir/console.log $title
diff --git a/tools/testing/selftests/rcutorture/bin/kvm-transform.sh b/tools/testing/selftests/rcutorture/bin/kvm-transform.sh
new file mode 100755
index 000000000..d40b4e60a
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm-transform.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Transform a qemu-cmd file to allow reuse.
+#
+# Usage: kvm-transform.sh bzImage console.log jitter_dir [ seconds ] < qemu-cmd-in > qemu-cmd-out
+#
+# bzImage: Kernel and initrd from the same prior kvm.sh run.
+# console.log: File into which to place console output.
+#
+# The original qemu-cmd file is provided on standard input.
+# The transformed qemu-cmd file is on standard output.
+# The transformation assumes that the qemu command is confined to a
+# single line. It also assumes no whitespace in filenames.
+#
+# Copyright (C) 2020 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+image="$1"
+if test -z "$image"
+then
+ echo Need kernel image file.
+ exit 1
+fi
+consolelog="$2"
+if test -z "$consolelog"
+then
+ echo "Need console log file name."
+ exit 1
+fi
+jitter_dir="$3"
+if test -z "$jitter_dir" || ! test -d "$jitter_dir"
+then
+ echo "Need valid jitter directory: '$jitter_dir'"
+ exit 1
+fi
+seconds="$4"
+if test -n "$seconds" && echo $seconds | grep -q '[^0-9]'
+then
+ echo "Invalid duration, should be numeric in seconds: '$seconds'"
+ exit 1
+fi
+
+awk -v image="$image" -v consolelog="$consolelog" -v jitter_dir="$jitter_dir" \
+ -v seconds="$seconds" '
+/^# seconds=/ {
+ if (seconds == "")
+ print $0;
+ else
+ print "# seconds=" seconds;
+ next;
+}
+
+/^# TORTURE_JITTER_START=/ {
+ print "# TORTURE_JITTER_START=\". jitterstart.sh " $4 " " jitter_dir " " $6 " " $7;
+ next;
+}
+
+/^# TORTURE_JITTER_STOP=/ {
+ print "# TORTURE_JITTER_STOP=\". jitterstop.sh " " " jitter_dir " " $5;
+ next;
+}
+
+/^#/ {
+ print $0;
+ next;
+}
+
+{
+ line = "";
+ for (i = 1; i <= NF; i++) {
+ if ("" seconds != "" && $i ~ /\.shutdown_secs=[0-9]*$/) {
+ sub(/[0-9]*$/, seconds, $i);
+ if (line == "")
+ line = $i;
+ else
+ line = line " " $i;
+ } else if (line == "") {
+ line = $i;
+ } else {
+ line = line " " $i;
+ }
+ if ($i == "-serial") {
+ i++;
+ line = line " file:" consolelog;
+ } else if ($i == "-kernel") {
+ i++;
+ line = line " " image;
+ }
+ }
+ print line;
+}'
diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
new file mode 100755
index 000000000..6c734818a
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -0,0 +1,659 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Run a series of tests under KVM. By default, this series is specified
+# by the relevant CFLIST file, but can be overridden by the --configs
+# command-line argument.
+#
+# Usage: kvm.sh [ options ]
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+scriptname=$0
+args="$*"
+
+T=${TMPDIR-/tmp}/kvm.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+cd `dirname $scriptname`/../../../../../
+
+# This script knows only English.
+LANG=en_US.UTF-8; export LANG
+
+dur=$((30*60))
+dryrun=""
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+
+TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
+TORTURE_DEFCONFIG=defconfig
+TORTURE_BOOT_IMAGE=""
+TORTURE_BUILDONLY=
+TORTURE_INITRD="$RCUTORTURE/initrd"; export TORTURE_INITRD
+TORTURE_KCONFIG_ARG=""
+TORTURE_KCONFIG_GDB_ARG=""
+TORTURE_BOOT_GDB_ARG=""
+TORTURE_QEMU_GDB_ARG=""
+TORTURE_JITTER_START=""
+TORTURE_JITTER_STOP=""
+TORTURE_KCONFIG_KASAN_ARG=""
+TORTURE_KCONFIG_KCSAN_ARG=""
+TORTURE_KMAKE_ARG=""
+TORTURE_QEMU_MEM=512
+torture_qemu_mem_default=1
+TORTURE_REMOTE=
+TORTURE_SHUTDOWN_GRACE=180
+TORTURE_SUITE=rcu
+TORTURE_MOD=rcutorture
+TORTURE_TRUST_MAKE=""
+resdir=""
+configs=""
+cpus=0
+ds=`date +%Y.%m.%d-%H.%M.%S`
+jitter="-1"
+
+startdate="`date`"
+starttime="`get_starttime`"
+
+usage () {
+ echo "Usage: $scriptname optional arguments:"
+ echo " --allcpus"
+ echo " --bootargs kernel-boot-arguments"
+ echo " --bootimage relative-path-to-kernel-boot-image"
+ echo " --buildonly"
+ echo " --configs \"config-file list w/ repeat factor (3*TINY01)\""
+ echo " --cpus N"
+ echo " --datestamp string"
+ echo " --defconfig string"
+ echo " --dryrun batches|scenarios|sched|script"
+ echo " --duration minutes | <seconds>s | <hours>h | <days>d"
+ echo " --gdb"
+ echo " --help"
+ echo " --interactive"
+ echo " --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
+ echo " --kasan"
+ echo " --kconfig Kconfig-options"
+ echo " --kcsan"
+ echo " --kmake-arg kernel-make-arguments"
+ echo " --mac nn:nn:nn:nn:nn:nn"
+ echo " --memory megabytes|nnnG"
+ echo " --no-initrd"
+ echo " --qemu-args qemu-arguments"
+ echo " --qemu-cmd qemu-system-..."
+ echo " --remote"
+ echo " --results absolute-pathname"
+ echo " --shutdown-grace seconds"
+ echo " --torture lock|rcu|rcuscale|refscale|scf|X*"
+ echo " --trust-make"
+ exit 1
+}
+
+while test $# -gt 0
+do
+ case "$1" in
+ --allcpus)
+ cpus=$TORTURE_ALLOTED_CPUS
+ max_cpus=$TORTURE_ALLOTED_CPUS
+ ;;
+ --bootargs|--bootarg)
+ checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
+ TORTURE_BOOTARGS="$TORTURE_BOOTARGS $2"
+ shift
+ ;;
+ --bootimage)
+ checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
+ TORTURE_BOOT_IMAGE="$2"
+ shift
+ ;;
+ --buildonly|--build-only)
+ TORTURE_BUILDONLY=1
+ ;;
+ --configs|--config)
+ checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
+ configs="$configs $2"
+ shift
+ ;;
+ --cpus)
+ checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
+ cpus=$2
+ TORTURE_ALLOTED_CPUS="$2"
+ if test -z "$TORTURE_REMOTE"
+ then
+ max_cpus="`identify_qemu_vcpus`"
+ if test "$TORTURE_ALLOTED_CPUS" -gt "$max_cpus"
+ then
+ TORTURE_ALLOTED_CPUS=$max_cpus
+ fi
+ fi
+ shift
+ ;;
+ --datestamp)
+ checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
+ ds=$2
+ shift
+ ;;
+ --defconfig)
+ checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
+ TORTURE_DEFCONFIG=$2
+ shift
+ ;;
+ --dryrun)
+ checkarg --dryrun "batches|sched|script" $# "$2" 'batches\|scenarios\|sched\|script' '^--'
+ dryrun=$2
+ shift
+ ;;
+ --duration)
+ checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
+ mult=60
+ if echo "$2" | grep -q 's$'
+ then
+ mult=1
+ elif echo "$2" | grep -q 'h$'
+ then
+ mult=3600
+ elif echo "$2" | grep -q 'd$'
+ then
+ mult=86400
+ fi
+ ts=`echo $2 | sed -e 's/[smhd]$//'`
+ dur=$(($ts*mult))
+ shift
+ ;;
+ --gdb)
+ TORTURE_KCONFIG_GDB_ARG="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y"; export TORTURE_KCONFIG_GDB_ARG
+ TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
+ TORTURE_QEMU_GDB_ARG="-s -S"; export TORTURE_QEMU_GDB_ARG
+ ;;
+ --help|-h)
+ usage
+ ;;
+ --interactive)
+ TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
+ ;;
+ --jitter)
+ checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
+ jitter="$2"
+ shift
+ ;;
+ --kasan)
+ TORTURE_KCONFIG_KASAN_ARG="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y CONFIG_KASAN=y"; export TORTURE_KCONFIG_KASAN_ARG
+ if test -n "$torture_qemu_mem_default"
+ then
+ TORTURE_QEMU_MEM=2G
+ fi
+ ;;
+ --kconfig|--kconfigs)
+ checkarg --kconfig "(Kconfig options)" $# "$2" '^CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\( CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\)*$' '^error$'
+ TORTURE_KCONFIG_ARG="`echo "$TORTURE_KCONFIG_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
+ shift
+ ;;
+ --kcsan)
+ TORTURE_KCONFIG_KCSAN_ARG="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y CONFIG_KCSAN=y CONFIG_KCSAN_STRICT=y CONFIG_KCSAN_REPORT_ONCE_IN_MS=100000 CONFIG_KCSAN_VERBOSE=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y"; export TORTURE_KCONFIG_KCSAN_ARG
+ ;;
+ --kmake-arg|--kmake-args)
+ checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
+ TORTURE_KMAKE_ARG="`echo "$TORTURE_KMAKE_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
+ shift
+ ;;
+ --mac)
+ checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
+ TORTURE_QEMU_MAC=$2
+ shift
+ ;;
+ --memory)
+ checkarg --memory "(memory size)" $# "$2" '^[0-9]\+[MG]\?$' error
+ TORTURE_QEMU_MEM=$2
+ torture_qemu_mem_default=
+ shift
+ ;;
+ --no-initrd)
+ TORTURE_INITRD=""; export TORTURE_INITRD
+ ;;
+ --qemu-args|--qemu-arg)
+ checkarg --qemu-args "(qemu arguments)" $# "$2" '^-' '^error'
+ TORTURE_QEMU_ARG="`echo "$TORTURE_QEMU_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
+ shift
+ ;;
+ --qemu-cmd)
+ checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
+ TORTURE_QEMU_CMD="$2"
+ shift
+ ;;
+ --remote)
+ TORTURE_REMOTE=1
+ ;;
+ --results)
+ checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
+ resdir=$2
+ shift
+ ;;
+ --shutdown-grace)
+ checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
+ TORTURE_SHUTDOWN_GRACE=$2
+ shift
+ ;;
+ --torture)
+ checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
+ TORTURE_SUITE=$2
+ TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
+ shift
+ if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
+ then
+ # If you really want jitter for refscale or
+ # rcuscale, specify it after specifying the rcuscale
+ # or the refscale. (But why jitter in these cases?)
+ jitter=0
+ fi
+ ;;
+ --trust-make)
+ TORTURE_TRUST_MAKE="y"
+ ;;
+ *)
+ echo Unknown argument $1
+ usage
+ ;;
+ esac
+ shift
+done
+
+if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh
+then
+ :
+else
+ echo No initrd and unable to create one, aborting test >&2
+ exit 1
+fi
+
+CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG
+
+defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
+if test -z "$configs"
+then
+ configs=$defaultconfigs
+fi
+
+if test -z "$resdir"
+then
+ resdir=$RCUTORTURE/res
+fi
+
+# Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
+configs_derep=
+for CF in $configs
+do
+ case $CF in
+ [0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**|[0-9][0-9][0-9][0-9]\**)
+ config_reps=`echo $CF | sed -e 's/\*.*$//'`
+ CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
+ ;;
+ *)
+ config_reps=1
+ CF1=$CF
+ ;;
+ esac
+ for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
+ do
+ configs_derep="$configs_derep $CF1"
+ done
+done
+touch $T/cfgcpu
+configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
+if test -n "$TORTURE_KCONFIG_GDB_ARG"
+then
+ if test "`echo $configs_derep | wc -w`" -gt 1
+ then
+ echo "The --config list is: $configs_derep."
+ echo "Only one --config permitted with --gdb, terminating."
+ exit 1
+ fi
+fi
+echo 'BEGIN {' > $T/cfgcpu.awk
+for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
+do
+ if test -f "$CONFIGFRAG/$CF1"
+ then
+ if echo "$TORTURE_KCONFIG_ARG" | grep -q '\<CONFIG_NR_CPUS='
+ then
+ echo "$TORTURE_KCONFIG_ARG" | tr -s ' ' | tr ' ' '\012' > $T/KCONFIG_ARG
+ cpu_count=`configNR_CPUS.sh $T/KCONFIG_ARG`
+ else
+ cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
+ fi
+ cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
+ cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
+ echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
+ else
+ echo "The --configs file $CF1 does not exist, terminating."
+ exit 1
+ fi
+done
+cat << '___EOF___' >> $T/cfgcpu.awk
+}
+{
+ for (i = 1; i <= NF; i++)
+ print $i, scenariocpu[$i];
+}
+___EOF___
+echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
+sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
+
+# Use a greedy bin-packing algorithm, sorting the list accordingly.
+awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
+BEGIN {
+ njobs = 0;
+}
+
+{
+ # Read file of tests and corresponding required numbers of CPUs.
+ cf[njobs] = $1;
+ cpus[njobs] = $2;
+ njobs++;
+}
+
+END {
+ batch = 0;
+ nc = -1;
+
+ # Each pass through the following loop creates on test batch that
+ # can be executed concurrently given ncpus. Note that a given test
+ # that requires more than the available CPUs will run in its own
+ # batch. Such tests just have to make do with what is available.
+ while (nc != ncpus) {
+ batch++;
+ nc = ncpus;
+
+ # Each pass through the following loop considers one
+ # test for inclusion in the current batch.
+ for (i = 0; i < njobs; i++) {
+ if (done[i])
+ continue; # Already part of a batch.
+ if (nc >= cpus[i] || nc == ncpus) {
+
+ # This test fits into the current batch.
+ done[i] = batch;
+ nc -= cpus[i];
+ if (nc <= 0)
+ break; # Too-big test in its own batch.
+ }
+ }
+ }
+
+ # Dump out the tests in batch order.
+ for (b = 1; b <= batch; b++)
+ for (i = 0; i < njobs; i++)
+ if (done[i] == b)
+ print cf[i], cpus[i];
+}'
+
+# Generate a script to execute the tests in appropriate batches.
+cat << ___EOF___ > $T/script
+CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
+RCUTORTURE="$RCUTORTURE"; export RCUTORTURE
+PATH="$PATH"; export PATH
+TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
+TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
+TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
+TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
+TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
+TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
+TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG
+TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG
+TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG
+TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG
+TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG
+TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
+TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD
+TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
+TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
+TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
+TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM
+TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
+TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
+TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE
+if ! test -e $resdir
+then
+ mkdir -p "$resdir" || :
+fi
+mkdir -p $resdir/$ds
+TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR
+TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE
+echo Results directory: $resdir/$ds
+echo $scriptname $args
+touch $resdir/$ds/log
+echo $scriptname $args >> $resdir/$ds/log
+echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite
+echo Build directory: `pwd` > $resdir/$ds/testid.txt
+if test -d .git
+then
+ echo Current commit: `git rev-parse HEAD` >> $resdir/$ds/testid.txt
+ echo >> $resdir/$ds/testid.txt
+ echo ' ---' Output of "'"git status"'": >> $resdir/$ds/testid.txt
+ git status >> $resdir/$ds/testid.txt
+ echo >> $resdir/$ds/testid.txt
+ echo >> $resdir/$ds/testid.txt
+ echo ' ---' Output of "'"git diff HEAD"'": >> $resdir/$ds/testid.txt
+ git diff HEAD >> $resdir/$ds/testid.txt
+fi
+___EOF___
+kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
+kvm-get-cpus-script.sh $T/cpuarray.awk $T/dumpbatches.awk
+cat << '___EOF___' >> $T/dumpbatches.awk
+BEGIN {
+ i = 0;
+}
+
+{
+ cf[i] = $1;
+ cpus[i] = $2;
+ i++;
+}
+
+# Dump out the scripting required to run one test batch.
+function dump(first, pastlast, batchnum, affinitylist)
+{
+ print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log";
+ print "needqemurun="
+ jn=1
+ njitter = 0;
+ split(jitter, ja);
+ if (ja[1] == -1 && ncpus == 0)
+ njitter = 1;
+ else if (ja[1] == -1)
+ njitter = ncpus;
+ else
+ njitter = ja[1];
+ print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START";
+ print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP"
+ for (j = first; j < pastlast; j++) {
+ cpusr[jn] = cpus[j];
+ if (cfrep[cf[j]] == "") {
+ cfr[jn] = cf[j];
+ cfrep[cf[j]] = 1;
+ } else {
+ cfrep[cf[j]]++;
+ cfr[jn] = cf[j] "." cfrep[cf[j]];
+ }
+ builddir=rd cfr[jn] "/build";
+ if (cpusr[jn] > ncpus && ncpus != 0)
+ ovf = "-ovf";
+ else
+ ovf = "";
+ print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log";
+ print "mkdir " rd cfr[jn] " || :";
+ print "touch " builddir ".wait";
+ affinitylist = "";
+ if (gotcpus()) {
+ affinitylist = nextcpus(cpusr[jn]);
+ }
+ if (affinitylist ~ /^[0-9,-][0-9,-]*$/)
+ print "export TORTURE_AFFINITY=" affinitylist;
+ else
+ print "export TORTURE_AFFINITY=";
+ print "kvm-test-1-run.sh " CONFIGDIR cf[j], rd cfr[jn], dur " \"" TORTURE_QEMU_ARG "\" \"" TORTURE_BOOTARGS "\" > " rd cfr[jn] "/kvm-test-1-run.sh.out 2>&1 &"
+ print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log";
+ print "while test -f " builddir ".wait"
+ print "do"
+ print "\tsleep 1"
+ print "done"
+ print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log";
+ jn++;
+ }
+ print "runfiles="
+ for (j = 1; j < jn; j++) {
+ builddir=rd cfr[j] "/build";
+ if (TORTURE_BUILDONLY)
+ print "rm -f " builddir ".ready"
+ else
+ print "mv " builddir ".ready " builddir ".run"
+ print "runfiles=\"$runfiles " builddir ".run\""
+ fi
+ print "if test -f \"" rd cfr[j] "/builtkernel\""
+ print "then"
+ print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log";
+ print "\tneedqemurun=1"
+ print "fi"
+ }
+ if (TORTURE_BUILDONLY && njitter != 0) {
+ njitter = 0;
+ print "echo Build-only run, so suppressing jitter | tee -a " rd "log"
+ }
+ if (TORTURE_BUILDONLY) {
+ print "needqemurun="
+ }
+ print "if test -n \"$needqemurun\""
+ print "then"
+ print "\techo ---- Starting kernels. `date` | tee -a " rd "log";
+ print "\t$TORTURE_JITTER_START";
+ print "\twhile ls $runfiles > /dev/null 2>&1"
+ print "\tdo"
+ print "\t\t:"
+ print "\tdone"
+ print "\t$TORTURE_JITTER_STOP";
+ print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log";
+ print "else"
+ print "\twait"
+ print "\techo ---- No kernel runs. `date` | tee -a " rd "log";
+ print "fi"
+ for (j = 1; j < jn; j++) {
+ print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log";
+ print "cat " rd cfr[j] "/kvm-test-1-run.sh.out | tee -a " rd "log";
+ }
+}
+
+END {
+ njobs = i;
+ nc = ncpus;
+ first = 0;
+ batchnum = 1;
+
+ # Each pass through the following loop considers one test.
+ for (i = 0; i < njobs; i++) {
+ if (ncpus == 0) {
+ # Sequential test specified, each test its own batch.
+ dump(i, i + 1, batchnum);
+ first = i;
+ batchnum++;
+ } else if (nc < cpus[i] && i != 0) {
+ # Out of CPUs, dump out a batch.
+ dump(first, i, batchnum);
+ first = i;
+ nc = ncpus;
+ batchnum++;
+ }
+ # Account for the CPUs needed by the current test.
+ nc -= cpus[i];
+ }
+ # Dump the last batch.
+ if (ncpus != 0)
+ dump(first, i, batchnum);
+}
+___EOF___
+awk < $T/cfgcpu.pack \
+ -v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
+ -v CONFIGDIR="$CONFIGFRAG/" \
+ -v RCUTORTURE="$RCUTORTURE" \
+ -v ncpus=$cpus \
+ -v jitter="$jitter" \
+ -v rd=$resdir/$ds/ \
+ -v dur=$dur \
+ -v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
+ -v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
+ -f $T/dumpbatches.awk >> $T/script
+echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script
+
+# Extract the tests and their batches from the script.
+egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
+ sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' |
+ awk '
+ /^----Start/ {
+ batchno = $3;
+ next;
+ }
+ {
+ print batchno, $1, $2
+ }' > $T/batches
+
+# As above, but one line per batch.
+grep -v '^#' $T/batches | awk '
+BEGIN {
+ oldbatch = 1;
+}
+
+{
+ if (oldbatch != $1) {
+ print ++n ". " curbatch;
+ curbatch = "";
+ oldbatch = $1;
+ }
+ curbatch = curbatch " " $2;
+}
+
+END {
+ print ++n ". " curbatch;
+}' > $T/scenarios
+
+if test "$dryrun" = script
+then
+ cat $T/script
+ exit 0
+elif test "$dryrun" = sched
+then
+ # Extract the test run schedule from the script.
+ egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
+ sed -e 's/:.*$//' -e 's/^echo //'
+ nbuilds="`grep 'Starting build\.' $T/script |
+ grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' |
+ awk '{ print $1 }' | grep -v '\.' | wc -l`"
+ echo Total number of builds: $nbuilds
+ nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`"
+ echo Total number of batches: $nbatches
+ exit 0
+elif test "$dryrun" = batches
+then
+ cat $T/batches
+ exit 0
+elif test "$dryrun" = scenarios
+then
+ cat $T/scenarios
+ exit 0
+else
+ # Not a dryrun. Record the batches and the number of CPUs, then run the script.
+ bash $T/script
+ ret=$?
+ cp $T/batches $resdir/$ds/batches
+ cp $T/scenarios $resdir/$ds/scenarios
+ echo '#' cpus=$cpus >> $resdir/$ds/batches
+ exit $ret
+fi
+
+# Tracing: trace_event=rcu:rcu_grace_period,rcu:rcu_future_grace_period,rcu:rcu_grace_period_init,rcu:rcu_nocb_wake,rcu:rcu_preempt_task,rcu:rcu_unlock_preempted_task,rcu:rcu_quiescent_state_report,rcu:rcu_fqs,rcu:rcu_callback,rcu:rcu_kfree_callback,rcu:rcu_batch_start,rcu:rcu_invoke_callback,rcu:rcu_invoke_kfree_callback,rcu:rcu_batch_end,rcu:rcu_torture_read,rcu:rcu_barrier
+# Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop
+# Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y"
+# Control buffer size: --bootargs trace_buf_size=3k
+# Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops
+# Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu
+# Heavy-handed way to also dump on warnings: --bootargs panic_on_warn
diff --git a/tools/testing/selftests/rcutorture/bin/mkinitrd.sh b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh
new file mode 100755
index 000000000..70d62fd0d
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/mkinitrd.sh
@@ -0,0 +1,81 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Create an initrd directory if one does not already exist.
+#
+# Copyright (C) IBM Corporation, 2013
+#
+# Author: Connor Shu <Connor.Shu@ibm.com>
+
+D=tools/testing/selftests/rcutorture
+
+# Prerequisite checks
+[ -z "$D" ] && echo >&2 "No argument supplied" && exit 1
+if [ ! -d "$D" ]; then
+ echo >&2 "$D does not exist: Malformed kernel source tree?"
+ exit 1
+fi
+if [ -s "$D/initrd/init" ]; then
+ echo "$D/initrd/init already exists, no need to create it"
+ exit 0
+fi
+
+# Create a C-language initrd/init infinite-loop program and statically
+# link it. This results in a very small initrd.
+echo "Creating a statically linked C-language initrd"
+cd $D
+mkdir -p initrd
+cd initrd
+cat > init.c << '___EOF___'
+#ifndef NOLIBC
+#include <unistd.h>
+#include <sys/time.h>
+#endif
+
+volatile unsigned long delaycount;
+
+int main(int argc, int argv[])
+{
+ int i;
+ struct timeval tv;
+ struct timeval tvb;
+
+ for (;;) {
+ sleep(1);
+ /* Need some userspace time. */
+ if (gettimeofday(&tvb, NULL))
+ continue;
+ do {
+ for (i = 0; i < 1000 * 100; i++)
+ delaycount = i * i;
+ if (gettimeofday(&tv, NULL))
+ break;
+ tv.tv_sec -= tvb.tv_sec;
+ if (tv.tv_sec > 1)
+ break;
+ tv.tv_usec += tv.tv_sec * 1000 * 1000;
+ tv.tv_usec -= tvb.tv_usec;
+ } while (tv.tv_usec < 1000);
+ }
+ return 0;
+}
+___EOF___
+
+# build using nolibc on supported archs (smaller executable) and fall
+# back to regular glibc on other ones.
+if echo -e "#if __x86_64__||__i386__||__i486__||__i586__||__i686__" \
+ "||__ARM_EABI__||__aarch64__\nyes\n#endif" \
+ | ${CROSS_COMPILE}gcc -E -nostdlib -xc - \
+ | grep -q '^yes'; then
+ # architecture supported by nolibc
+ ${CROSS_COMPILE}gcc -fno-asynchronous-unwind-tables -fno-ident \
+ -nostdlib -include ../../../../include/nolibc/nolibc.h \
+ -s -static -Os -o init init.c -lgcc
+else
+ ${CROSS_COMPILE}gcc -s -static -Os -o init init.c
+fi
+
+rm init.c
+echo "Done creating a statically linked C-language initrd"
+
+exit 0
diff --git a/tools/testing/selftests/rcutorture/bin/parse-build.sh b/tools/testing/selftests/rcutorture/bin/parse-build.sh
new file mode 100755
index 000000000..2dbfca358
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/parse-build.sh
@@ -0,0 +1,50 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Check the build output from an rcutorture run for goodness.
+# The "file" is a pathname on the local system, and "title" is
+# a text string for error-message purposes.
+#
+# The file must contain kernel build output.
+#
+# Usage: parse-build.sh file title
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+F=$1
+title=$2
+T=${TMPDIR-/tmp}/parse-build.sh.$$
+trap 'rm -rf $T' 0
+mkdir $T
+
+. functions.sh
+
+if grep -q CC < $F || test -n "$TORTURE_TRUST_MAKE" || grep -qe --trust-make < `dirname $F`/../log
+then
+ :
+else
+ print_bug $title no build
+ exit 1
+fi
+
+if grep -q "error:" < $F
+then
+ print_bug $title build errors:
+ grep "error:" < $F
+ exit 2
+fi
+
+grep warning: < $F > $T/warnings
+grep "include/linux/*rcu*\.h:" $T/warnings > $T/hwarnings
+grep "kernel/rcu/[^/]*:" $T/warnings > $T/cwarnings
+grep "^ld: .*undefined reference to" $T/warnings | head -1 > $T/ldwarnings
+cat $T/hwarnings $T/cwarnings $T/ldwarnings > $T/rcuwarnings
+if test -s $T/rcuwarnings
+then
+ print_warning $title build errors:
+ cat $T/rcuwarnings
+ exit 2
+fi
+exit 0
diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh
new file mode 100755
index 000000000..822eb037a
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh
@@ -0,0 +1,184 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Check the console output from an rcutorture run for oopses.
+# The "file" is a pathname on the local system, and "title" is
+# a text string for error-message purposes.
+#
+# Usage: parse-console.sh file title
+#
+# Copyright (C) IBM Corporation, 2011
+#
+# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
+
+T=${TMPDIR-/tmp}/parse-console.sh.$$
+file="$1"
+title="$2"
+
+trap 'rm -f $T.seq $T.diags' 0
+
+. functions.sh
+
+# Check for presence and readability of console output file
+if test -f "$file" -a -r "$file"
+then
+ :
+else
+ echo $title unreadable console output file: $file
+ exit 1
+fi
+if grep -Pq '\x00' < $file
+then
+ print_warning Console output contains nul bytes, old qemu still running?
+fi
+cat /dev/null > $file.diags
+
+# Check for proper termination, except for rcuscale and refscale.
+if test "$TORTURE_SUITE" != rcuscale && test "$TORTURE_SUITE" != refscale
+then
+ # check for abject failure
+
+ if grep -q FAILURE $file || grep -q -e '-torture.*!!!' $file
+ then
+ nerrs=`grep --binary-files=text '!!!' $file |
+ tail -1 |
+ awk '
+ {
+ normalexit = 1;
+ for (i=NF-8;i<=NF;i++) {
+ if (i <= 0 || i !~ /^[0-9]*$/) {
+ bangstring = $0;
+ gsub(/^\[[^]]*] /, "", bangstring);
+ print bangstring;
+ normalexit = 0;
+ exit 0;
+ }
+ sum+=$i;
+ }
+ }
+ END {
+ if (normalexit)
+ print sum " instances"
+ }'`
+ print_bug $title FAILURE, $nerrs
+ exit
+ fi
+
+ grep --binary-files=text 'torture:.*ver:' $file |
+ egrep --binary-files=text -v '\(null\)|rtc: 000000000* ' |
+ sed -e 's/^(initramfs)[^]]*] //' -e 's/^\[[^]]*] //' |
+ sed -e 's/^.*ver: //' |
+ awk '
+ BEGIN {
+ ver = 0;
+ badseq = 0;
+ }
+
+ {
+ if (!badseq && ($1 + 0 != $1 || $1 <= ver)) {
+ badseqno1 = ver;
+ badseqno2 = $1;
+ badseqnr = NR;
+ badseq = 1;
+ }
+ ver = $1
+ }
+
+ END {
+ if (badseq) {
+ if (badseqno1 == badseqno2 && badseqno2 == ver)
+ print "GP HANG at " ver " torture stat " badseqnr;
+ else
+ print "BAD SEQ " badseqno1 ":" badseqno2 " last:" ver " version " badseqnr;
+ }
+ }' > $T.seq
+
+ if grep -q SUCCESS $file
+ then
+ if test -s $T.seq
+ then
+ print_warning $title `cat $T.seq`
+ echo " " $file
+ exit 2
+ fi
+ else
+ if grep -q "_HOTPLUG:" $file
+ then
+ print_warning HOTPLUG FAILURES $title `cat $T.seq`
+ echo " " $file
+ exit 3
+ fi
+ echo $title no success message, `grep --binary-files=text 'ver:' $file | wc -l` successful version messages
+ if test -s $T.seq
+ then
+ print_warning $title `cat $T.seq`
+ fi
+ exit 2
+ fi
+fi | tee -a $file.diags
+
+console-badness.sh < $file > $T.diags
+if test -s $T.diags
+then
+ print_warning "Assertion failure in $file $title"
+ # cat $T.diags
+ summary=""
+ n_badness=`grep -c Badness $file`
+ if test "$n_badness" -ne 0
+ then
+ summary="$summary Badness: $n_badness"
+ fi
+ n_warn=`grep -v 'Warning: unable to open an initial console' $file | grep -v 'Warning: Failed to add ttynull console. No stdin, stdout, and stderr for the init process' | egrep -c 'WARNING:|Warn'`
+ if test "$n_warn" -ne 0
+ then
+ summary="$summary Warnings: $n_warn"
+ fi
+ n_bugs=`egrep -c '\bBUG|Oops:' $file`
+ if test "$n_bugs" -ne 0
+ then
+ summary="$summary Bugs: $n_bugs"
+ fi
+ n_kcsan=`egrep -c 'BUG: KCSAN: ' $file`
+ if test "$n_kcsan" -ne 0
+ then
+ if test "$n_bugs" = "$n_kcsan"
+ then
+ summary="$summary (all bugs kcsan)"
+ else
+ summary="$summary KCSAN: $n_kcsan"
+ fi
+ fi
+ n_calltrace=`grep -c 'Call Trace:' $file`
+ if test "$n_calltrace" -ne 0
+ then
+ summary="$summary Call Traces: $n_calltrace"
+ fi
+ n_lockdep=`grep -c =========== $file`
+ if test "$n_badness" -ne 0
+ then
+ summary="$summary lockdep: $n_badness"
+ fi
+ n_stalls=`egrep -c 'detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state' $file`
+ if test "$n_stalls" -ne 0
+ then
+ summary="$summary Stalls: $n_stalls"
+ fi
+ n_starves=`grep -c 'rcu_.*kthread starved for' $file`
+ if test "$n_starves" -ne 0
+ then
+ summary="$summary Starves: $n_starves"
+ fi
+ print_warning Summary: $summary
+ cat $T.diags >> $file.diags
+fi
+for i in $file.*.diags
+do
+ if test -f "$i"
+ then
+ cat $i >> $file.diags
+ fi
+done
+if ! test -s $file.diags
+then
+ rm -f $file.diags
+fi
diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh b/tools/testing/selftests/rcutorture/bin/torture.sh
new file mode 100755
index 000000000..d477618e7
--- /dev/null
+++ b/tools/testing/selftests/rcutorture/bin/torture.sh
@@ -0,0 +1,503 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Run a series of torture tests, intended for overnight or
+# longer timeframes, and also for large systems.
+#
+# Usage: torture.sh [ options ]
+#
+# Copyright (C) 2020 Facebook, Inc.
+#
+# Authors: Paul E. McKenney <paulmck@kernel.org>
+
+scriptname=$0
+args="$*"
+
+RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
+PATH=${RCUTORTURE}/bin:$PATH; export PATH
+. functions.sh
+
+TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
+MAKE_ALLOTED_CPUS=$((TORTURE_ALLOTED_CPUS*2))
+HALF_ALLOTED_CPUS=$((TORTURE_ALLOTED_CPUS/2))
+if test "$HALF_ALLOTED_CPUS" -lt 1
+then
+ HALF_ALLOTED_CPUS=1
+fi
+VERBOSE_BATCH_CPUS=$((TORTURE_ALLOTED_CPUS/16))
+if test "$VERBOSE_BATCH_CPUS" -lt 2
+then
+ VERBOSE_BATCH_CPUS=0
+fi
+
+# Configurations/scenarios.
+configs_rcutorture=
+configs_locktorture=
+configs_scftorture=
+kcsan_kmake_args=
+
+# Default compression, duration, and apportionment.
+compress_concurrency="`identify_qemu_vcpus`"
+duration_base=10
+duration_rcutorture_frac=7
+duration_locktorture_frac=1
+duration_scftorture_frac=2
+
+# "yes" or "no" parameters
+do_allmodconfig=yes
+do_rcutorture=yes
+do_locktorture=yes
+do_scftorture=yes
+do_rcuscale=yes
+do_refscale=yes
+do_kvfree=yes
+do_kasan=yes
+do_kcsan=no
+do_clocksourcewd=yes
+do_rt=yes
+
+# doyesno - Helper function for yes/no arguments
+function doyesno () {
+ if test "$1" = "$2"
+ then
+ echo yes
+ else
+ echo no
+ fi
+}
+
+usage () {
+ echo "Usage: $scriptname optional arguments:"
+ echo " --compress-concurrency concurrency"
+ echo " --configs-rcutorture \"config-file list w/ repeat factor (3*TINY01)\""
+ echo " --configs-locktorture \"config-file list w/ repeat factor (10*LOCK01)\""
+ echo " --configs-scftorture \"config-file list w/ repeat factor (2*CFLIST)\""
+ echo " --do-all"
+ echo " --do-allmodconfig / --do-no-allmodconfig"
+ echo " --do-clocksourcewd / --do-no-clocksourcewd"
+ echo " --do-kasan / --do-no-kasan"
+ echo " --do-kcsan / --do-no-kcsan"
+ echo " --do-kvfree / --do-no-kvfree"
+ echo " --do-locktorture / --do-no-locktorture"
+ echo " --do-none"
+ echo " --do-rcuscale / --do-no-rcuscale"
+ echo " --do-rcutorture / --do-no-rcutorture"
+ echo " --do-refscale / --do-no-refscale"
+ echo " --do-rt / --do-no-rt"
+ echo " --do-scftorture / --do-no-scftorture"
+ echo " --duration [ <minutes> | <hours>h | <days>d ]"
+ echo " --kcsan-kmake-arg kernel-make-arguments"
+ exit 1
+}
+
+while test $# -gt 0
+do
+ case "$1" in
+ --compress-concurrency)
+ checkarg --compress-concurrency "(concurrency level)" $# "$2" '^[0-9][0-9]*$' '^error'
+ compress_concurrency=$2
+ shift
+ ;;
+ --config-rcutorture|--configs-rcutorture)
+ checkarg --configs-rcutorture "(list of config files)" "$#" "$2" '^[^/]\+$' '^--'
+ configs_rcutorture="$configs_rcutorture $2"
+ shift
+ ;;
+ --config-locktorture|--configs-locktorture)
+ checkarg --configs-locktorture "(list of config files)" "$#" "$2" '^[^/]\+$' '^--'
+ configs_locktorture="$configs_locktorture $2"
+ shift
+ ;;
+ --config-scftorture|--configs-scftorture)
+ checkarg --configs-scftorture "(list of config files)" "$#" "$2" '^[^/]\+$' '^--'
+ configs_scftorture="$configs_scftorture $2"
+ shift
+ ;;
+ --do-all|--doall)
+ do_allmodconfig=yes
+ do_rcutorture=yes
+ do_locktorture=yes
+ do_scftorture=yes
+ do_rcuscale=yes
+ do_refscale=yes
+ do_rt=yes
+ do_kvfree=yes
+ do_kasan=yes
+ do_kcsan=yes
+ do_clocksourcewd=yes
+ ;;
+ --do-allmodconfig|--do-no-allmodconfig)
+ do_allmodconfig=`doyesno "$1" --do-allmodconfig`
+ ;;
+ --do-clocksourcewd|--do-no-clocksourcewd)
+ do_clocksourcewd=`doyesno "$1" --do-clocksourcewd`
+ ;;
+ --do-kasan|--do-no-kasan)
+ do_kasan=`doyesno "$1" --do-kasan`
+ ;;
+ --do-kcsan|--do-no-kcsan)
+ do_kcsan=`doyesno "$1" --do-kcsan`
+ ;;
+ --do-kvfree|--do-no-kvfree)
+ do_kvfree=`doyesno "$1" --do-kvfree`
+ ;;
+ --do-locktorture|--do-no-locktorture)
+ do_locktorture=`doyesno "$1" --do-locktorture`
+ ;;
+ --do-none|--donone)
+ do_allmodconfig=no
+ do_rcutorture=no
+ do_locktorture=no
+ do_scftorture=no
+ do_rcuscale=no
+ do_refscale=no
+ do_rt=no
+ do_kvfree=no
+ do_kasan=no
+ do_kcsan=no
+ do_clocksourcewd=no
+ ;;
+ --do-rcuscale|--do-no-rcuscale)
+ do_rcuscale=`doyesno "$1" --do-rcuscale`
+ ;;
+ --do-rcutorture|--do-no-rcutorture)
+ do_rcutorture=`doyesno "$1" --do-rcutorture`
+ ;;
+ --do-refscale|--do-no-refscale)
+ do_refscale=`doyesno "$1" --do-refscale`
+ ;;
+ --do-rt|--do-no-rt)
+ do_rt=`doyesno "$1" --do-rt`
+ ;;
+ --do-scftorture|--do-no-scftorture)
+ do_scftorture=`doyesno "$1" --do-scftorture`
+ ;;
+ --duration)
+ checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(m\|h\|d\|\)$' '^error'
+ mult=1
+ if echo "$2" | grep -q 'm$'
+ then
+ mult=1
+ elif echo "$2" | grep -q 'h$'
+ then
+ mult=60
+ elif echo "$2" | grep -q 'd$'
+ then
+ mult=1440
+ fi
+ ts=`echo $2 | sed -e 's/[smhd]$//'`
+ duration_base=$(($ts*mult))
+ shift
+ ;;
+ --kcsan-kmake-arg|--kcsan-kmake-args)
+ checkarg --kcsan-kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
+ kcsan_kmake_args="`echo "$kcsan_kmake_args $2" | sed -e 's/^ *//' -e 's/ *$//'`"
+ shift
+ ;;
+ *)
+ echo Unknown argument $1
+ usage
+ ;;
+ esac
+ shift
+done
+
+ds="`date +%Y.%m.%d-%H.%M.%S`-torture"
+startdate="`date`"
+starttime="`get_starttime`"
+
+T=/tmp/torture.sh.$$
+trap 'rm -rf $T' 0 2
+mkdir $T
+
+echo " --- " $scriptname $args | tee -a $T/log
+echo " --- Results directory: " $ds | tee -a $T/log
+
+# Calculate rcutorture defaults and apportion time
+if test -z "$configs_rcutorture"
+then
+ configs_rcutorture=CFLIST
+fi
+duration_rcutorture=$((duration_base*duration_rcutorture_frac/10))
+if test "$duration_rcutorture" -eq 0
+then
+ echo " --- Zero time for rcutorture, disabling" | tee -a $T/log
+ do_rcutorture=no
+fi
+
+# Calculate locktorture defaults and apportion time
+if test -z "$configs_locktorture"
+then
+ configs_locktorture=CFLIST
+fi
+duration_locktorture=$((duration_base*duration_locktorture_frac/10))
+if test "$duration_locktorture" -eq 0
+then
+ echo " --- Zero time for locktorture, disabling" | tee -a $T/log
+ do_locktorture=no
+fi
+
+# Calculate scftorture defaults and apportion time
+if test -z "$configs_scftorture"
+then
+ configs_scftorture=CFLIST
+fi
+duration_scftorture=$((duration_base*duration_scftorture_frac/10))
+if test "$duration_scftorture" -eq 0
+then
+ echo " --- Zero time for scftorture, disabling" | tee -a $T/log
+ do_scftorture=no
+fi
+
+touch $T/failures
+touch $T/successes
+
+# torture_one - Does a single kvm.sh run.
+#
+# Usage:
+# torture_bootargs="[ kernel boot arguments ]"
+# torture_one flavor [ kvm.sh arguments ]
+#
+# Note that "flavor" is an arbitrary string. Supply --torture if needed.
+# Note that quoting is problematic. So on the command line, pass multiple
+# values with multiple kvm.sh argument instances.
+function torture_one {
+ local cur_bootargs=
+ local boottag=
+
+ echo " --- $curflavor:" Start `date` | tee -a $T/log
+ if test -n "$torture_bootargs"
+ then
+ boottag="--bootargs"
+ cur_bootargs="$torture_bootargs"
+ fi
+ "$@" $boottag "$cur_bootargs" --datestamp "$ds/results-$curflavor" > $T/$curflavor.out 2>&1
+ retcode=$?
+ resdir="`grep '^Results directory: ' $T/$curflavor.out | tail -1 | sed -e 's/^Results directory: //'`"
+ if test -z "$resdir"
+ then
+ cat $T/$curflavor.out | tee -a $T/log
+ echo retcode=$retcode | tee -a $T/log
+ fi
+ if test "$retcode" == 0
+ then
+ echo "$curflavor($retcode)" $resdir >> $T/successes
+ else
+ echo "$curflavor($retcode)" $resdir >> $T/failures
+ fi
+}
+
+# torture_set - Does a set of tortures with and without KASAN and KCSAN.
+#
+# Usage:
+# torture_bootargs="[ kernel boot arguments ]"
+# torture_set flavor [ kvm.sh arguments ]
+#
+# Note that "flavor" is an arbitrary string that does not affect kvm.sh
+# in any way. So also supply --torture if you need something other than
+# the default.
+function torture_set {
+ local cur_kcsan_kmake_args=
+ local kcsan_kmake_tag=
+ local flavor=$1
+ shift
+ curflavor=$flavor
+ torture_one "$@"
+ if test "$do_kasan" = "yes"
+ then
+ curflavor=${flavor}-kasan
+ torture_one "$@" --kasan
+ fi
+ if test "$do_kcsan" = "yes"
+ then
+ curflavor=${flavor}-kcsan
+ if test -n "$kcsan_kmake_args"
+ then
+ kcsan_kmake_tag="--kmake-args"
+ cur_kcsan_kmake_args="$kcsan_kmake_args"
+ fi
+ torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
+ fi
+}
+
+# make allmodconfig
+if test "$do_allmodconfig" = "yes"
+then
+ echo " --- allmodconfig:" Start `date` | tee -a $T/log
+ amcdir="tools/testing/selftests/rcutorture/res/$ds/allmodconfig"
+ mkdir -p "$amcdir"
+ echo " --- make clean" > "$amcdir/Make.out" 2>&1
+ make -j$MAKE_ALLOTED_CPUS clean >> "$amcdir/Make.out" 2>&1
+ echo " --- make allmodconfig" >> "$amcdir/Make.out" 2>&1
+ cp .config $amcdir
+ make -j$MAKE_ALLOTED_CPUS allmodconfig >> "$amcdir/Make.out" 2>&1
+ echo " --- make " >> "$amcdir/Make.out" 2>&1
+ make -j$MAKE_ALLOTED_CPUS >> "$amcdir/Make.out" 2>&1
+ retcode="$?"
+ echo $retcode > "$amcdir/Make.exitcode"
+ if test "$retcode" == 0
+ then
+ echo "allmodconfig($retcode)" $amcdir >> $T/successes
+ else
+ echo "allmodconfig($retcode)" $amcdir >> $T/failures
+ fi
+fi
+
+# --torture rcu
+if test "$do_rcutorture" = "yes"
+then
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000"
+ torture_set "rcutorture" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration "$duration_rcutorture" --configs "$configs_rcutorture" --trust-make
+fi
+
+if test "$do_locktorture" = "yes"
+then
+ torture_bootargs="torture.disable_onoff_at_boot"
+ torture_set "locktorture" tools/testing/selftests/rcutorture/bin/kvm.sh --torture lock --allcpus --duration "$duration_locktorture" --configs "$configs_locktorture" --trust-make
+fi
+
+if test "$do_scftorture" = "yes"
+then
+ torture_bootargs="scftorture.nthreads=$HALF_ALLOTED_CPUS torture.disable_onoff_at_boot csdlock_debug=1"
+ torture_set "scftorture" tools/testing/selftests/rcutorture/bin/kvm.sh --torture scf --allcpus --duration "$duration_scftorture" --configs "$configs_scftorture" --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --memory 2G --trust-make
+fi
+
+if test "$do_rt" = "yes"
+then
+ # With all post-boot grace periods forced to normal.
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000 rcupdate.rcu_normal=1"
+ torture_set "rcurttorture" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration "$duration_rcutorture" --configs "TREE03" --trust-make
+
+ # With all post-boot grace periods forced to expedited.
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000 rcupdate.rcu_expedited=1"
+ torture_set "rcurttorture-exp" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration "$duration_rcutorture" --configs "TREE03" --trust-make
+fi
+
+if test "$do_refscale" = yes
+then
+ primlist="`grep '\.name[ ]*=' kernel/rcu/refscale.c | sed -e 's/^[^"]*"//' -e 's/".*$//'`"
+else
+ primlist=
+fi
+for prim in $primlist
+do
+ torture_bootargs="refscale.scale_type="$prim" refscale.nreaders=$HALF_ALLOTED_CPUS refscale.loops=10000 refscale.holdoff=20 torture.disable_onoff_at_boot"
+ torture_set "refscale-$prim" tools/testing/selftests/rcutorture/bin/kvm.sh --torture refscale --allcpus --duration 5 --kconfig "CONFIG_TASKS_TRACE_RCU=y CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --bootargs "verbose_batched=$VERBOSE_BATCH_CPUS torture.verbose_sleep_frequency=8 torture.verbose_sleep_duration=$VERBOSE_BATCH_CPUS" --trust-make
+done
+
+if test "$do_rcuscale" = yes
+then
+ primlist="`grep '\.name[ ]*=' kernel/rcu/rcuscale.c | sed -e 's/^[^"]*"//' -e 's/".*$//'`"
+else
+ primlist=
+fi
+for prim in $primlist
+do
+ torture_bootargs="rcuscale.scale_type="$prim" rcuscale.nwriters=$HALF_ALLOTED_CPUS rcuscale.holdoff=20 torture.disable_onoff_at_boot"
+ torture_set "rcuscale-$prim" tools/testing/selftests/rcutorture/bin/kvm.sh --torture rcuscale --allcpus --duration 5 --kconfig "CONFIG_TASKS_TRACE_RCU=y CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --trust-make
+done
+
+if test "$do_kvfree" = "yes"
+then
+ torture_bootargs="rcuscale.kfree_rcu_test=1 rcuscale.kfree_nthreads=16 rcuscale.holdoff=20 rcuscale.kfree_loops=10000 torture.disable_onoff_at_boot"
+ torture_set "rcuscale-kvfree" tools/testing/selftests/rcutorture/bin/kvm.sh --torture rcuscale --allcpus --duration 10 --kconfig "CONFIG_NR_CPUS=$HALF_ALLOTED_CPUS" --memory 2G --trust-make
+fi
+
+if test "$do_clocksourcewd" = "yes"
+then
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000"
+ torture_set "clocksourcewd-1" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 45s --configs TREE03 --kconfig "CONFIG_TEST_CLOCKSOURCE_WATCHDOG=y" --trust-make
+
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000 clocksource.max_cswd_read_retries=1"
+ torture_set "clocksourcewd-2" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 45s --configs TREE03 --kconfig "CONFIG_TEST_CLOCKSOURCE_WATCHDOG=y" --trust-make
+
+ # In case our work is already done...
+ if test "$do_rcutorture" != "yes"
+ then
+ torture_bootargs="rcupdate.rcu_cpu_stall_suppress_at_boot=1 torture.disable_onoff_at_boot rcupdate.rcu_task_stall_timeout=30000"
+ torture_set "clocksourcewd-3" tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 45s --configs TREE03 --trust-make
+ fi
+fi
+
+echo " --- " $scriptname $args
+echo " --- " Done `date` | tee -a $T/log
+ret=0
+nsuccesses=0
+echo SUCCESSES: | tee -a $T/log
+if test -s "$T/successes"
+then
+ cat "$T/successes" | tee -a $T/log
+ nsuccesses="`wc -l "$T/successes" | awk '{ print $1 }'`"
+fi
+nfailures=0
+echo FAILURES: | tee -a $T/log
+if test -s "$T/failures"
+then
+ awk < "$T/failures" -v sq="'" '{ print "echo " sq $0 sq; print "sed -e " sq "1,/^ --- .* Test summary:$/d" sq " " $2 "/log | grep Summary: | sed -e " sq "s/^[^S]*/ /" sq; }' | sh | tee -a $T/log | tee "$T/failuresum"
+ nfailures="`wc -l "$T/failures" | awk '{ print $1 }'`"
+ grep "^ Summary: " "$T/failuresum" |
+ grep -v '^ Summary: Bugs: [0-9]* (all bugs kcsan)$' > "$T/nonkcsan"
+ if test -s "$T/nonkcsan"
+ then
+ nonkcsanbug="yes"
+ fi
+ ret=2
+fi
+if test "$do_kcsan" = "yes"
+then
+ TORTURE_KCONFIG_KCSAN_ARG=1 tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh tools/testing/selftests/rcutorture/res/$ds > tools/testing/selftests/rcutorture/res/$ds/kcsan.sum
+fi
+echo Started at $startdate, ended at `date`, duration `get_starttime_duration $starttime`. | tee -a $T/log
+echo Summary: Successes: $nsuccesses Failures: $nfailures. | tee -a $T/log
+if test -z "$nonkcsanbug" && test -s "$T/failuresum"
+then
+ echo " All bugs were KCSAN failures."
+fi
+tdir="`cat $T/successes $T/failures | head -1 | awk '{ print $NF }' | sed -e 's,/[^/]\+/*$,,'`"
+if test -n "$tdir" && test $compress_concurrency -gt 0
+then
+ # KASAN vmlinux files can approach 1GB in size, so compress them.
+ echo Looking for K[AC]SAN files to compress: `date` > "$tdir/log-xz" 2>&1
+ find "$tdir" -type d -name '*-k[ac]san' -print > $T/xz-todo
+ ncompresses=0
+ batchno=1
+ if test -s $T/xz-todo
+ then
+ for i in `cat $T/xz-todo`
+ do
+ find $i -name 'vmlinux*' -print
+ done | wc -l | awk '{ print $1 }' > $T/xz-todo-count
+ n2compress="`cat $T/xz-todo-count`"
+ echo Size before compressing $n2compress files: `du -sh $tdir | awk '{ print $1 }'` `date` 2>&1 | tee -a "$tdir/log-xz" | tee -a $T/log
+ for i in `cat $T/xz-todo`
+ do
+ echo Compressing vmlinux files in ${i}: `date` >> "$tdir/log-xz" 2>&1
+ for j in $i/*/vmlinux
+ do
+ xz "$j" >> "$tdir/log-xz" 2>&1 &
+ ncompresses=$((ncompresses+1))
+ if test $ncompresses -ge $compress_concurrency
+ then
+ echo Waiting for batch $batchno of $ncompresses compressions `date` | tee -a "$tdir/log-xz" | tee -a $T/log
+ wait
+ ncompresses=0
+ batchno=$((batchno+1))
+ fi
+ done
+ done
+ if test $ncompresses -gt 0
+ then
+ echo Waiting for final batch $batchno of $ncompresses compressions `date` | tee -a "$tdir/log-xz" | tee -a $T/log
+ fi
+ wait
+ echo Size after compressing $n2compress files: `du -sh $tdir | awk '{ print $1 }'` `date` 2>&1 | tee -a "$tdir/log-xz" | tee -a $T/log
+ echo Total duration `get_starttime_duration $starttime`. | tee -a $T/log
+ else
+ echo No compression needed: `date` >> "$tdir/log-xz" 2>&1
+ fi
+fi
+if test -n "$tdir"
+then
+ cp $T/log "$tdir"
+fi
+exit $ret