#!/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 <[email protected]>
scriptname=$0
args="$*"
T="`mktemp -d ${TMPDIR-/tmp}/kvm.sh.XXXXXX`"
trap 'rm -rf $T' 0
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=""
debuginfo="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y"
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 " --debug-info"
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=$2
shift
;;
--debug-info|--debuginfo)
if test -z "$TORTURE_KCONFIG_KCSAN_ARG" && test -z "$TORTURE_BOOT_GDB_ARG"
then
TORTURE_KCONFIG_KCSAN_ARG="$debuginfo"; export TORTURE_KCONFIG_KCSAN_ARG
TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
else
echo "Ignored redundant --debug-info (implied by --kcsan &c)"
fi
;;
--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="$debuginfo"; 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="$2"
shift
;;
--kasan)
TORTURE_KCONFIG_KASAN_ARG="$debuginfo 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" '^\(#CHECK#\)\?CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\|"[^"]*"\)\( \(#CHECK#\)\?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="$debuginfo 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.
grep -E '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.
grep -E '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=1
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