1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0+
3#
4# Run a series of tests under KVM.  By default, this series is specified
5# by the relevant CFLIST file, but can be overridden by the --configs
6# command-line argument.
7#
8# Usage: kvm.sh [ options ]
9#
10# Copyright (C) IBM Corporation, 2011
11#
12# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
13
14scriptname=$0
15args="$*"
16
17T=${TMPDIR-/tmp}/kvm.sh.$$
18trap 'rm -rf $T' 0
19mkdir $T
20
21cd `dirname $scriptname`/../../../../../
22
23# This script knows only English.
24LANG=en_US.UTF-8; export LANG
25
26dur=$((30*60))
27dryrun=""
28RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
29PATH=${RCUTORTURE}/bin:$PATH; export PATH
30. functions.sh
31
32TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
33TORTURE_DEFCONFIG=defconfig
34TORTURE_BOOT_IMAGE=""
35TORTURE_BUILDONLY=
36TORTURE_INITRD="$RCUTORTURE/initrd"; export TORTURE_INITRD
37TORTURE_KCONFIG_ARG=""
38TORTURE_KCONFIG_GDB_ARG=""
39TORTURE_BOOT_GDB_ARG=""
40TORTURE_QEMU_GDB_ARG=""
41TORTURE_JITTER_START=""
42TORTURE_JITTER_STOP=""
43TORTURE_KCONFIG_KASAN_ARG=""
44TORTURE_KCONFIG_KCSAN_ARG=""
45TORTURE_KMAKE_ARG=""
46TORTURE_QEMU_MEM=512
47torture_qemu_mem_default=1
48TORTURE_REMOTE=
49TORTURE_SHUTDOWN_GRACE=180
50TORTURE_SUITE=rcu
51TORTURE_MOD=rcutorture
52TORTURE_TRUST_MAKE=""
53resdir=""
54configs=""
55cpus=0
56ds=`date +%Y.%m.%d-%H.%M.%S`
57jitter="-1"
58
59startdate="`date`"
60starttime="`get_starttime`"
61
62usage () {
63	echo "Usage: $scriptname optional arguments:"
64	echo "       --allcpus"
65	echo "       --bootargs kernel-boot-arguments"
66	echo "       --bootimage relative-path-to-kernel-boot-image"
67	echo "       --buildonly"
68	echo "       --configs \"config-file list w/ repeat factor (3*TINY01)\""
69	echo "       --cpus N"
70	echo "       --datestamp string"
71	echo "       --defconfig string"
72	echo "       --dryrun batches|scenarios|sched|script"
73	echo "       --duration minutes | <seconds>s | <hours>h | <days>d"
74	echo "       --gdb"
75	echo "       --help"
76	echo "       --interactive"
77	echo "       --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
78	echo "       --kasan"
79	echo "       --kconfig Kconfig-options"
80	echo "       --kcsan"
81	echo "       --kmake-arg kernel-make-arguments"
82	echo "       --mac nn:nn:nn:nn:nn:nn"
83	echo "       --memory megabytes|nnnG"
84	echo "       --no-initrd"
85	echo "       --qemu-args qemu-arguments"
86	echo "       --qemu-cmd qemu-system-..."
87	echo "       --remote"
88	echo "       --results absolute-pathname"
89	echo "       --shutdown-grace seconds"
90	echo "       --torture lock|rcu|rcuscale|refscale|scf|X*"
91	echo "       --trust-make"
92	exit 1
93}
94
95while test $# -gt 0
96do
97	case "$1" in
98	--allcpus)
99		cpus=$TORTURE_ALLOTED_CPUS
100		max_cpus=$TORTURE_ALLOTED_CPUS
101		;;
102	--bootargs|--bootarg)
103		checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
104		TORTURE_BOOTARGS="$TORTURE_BOOTARGS $2"
105		shift
106		;;
107	--bootimage)
108		checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
109		TORTURE_BOOT_IMAGE="$2"
110		shift
111		;;
112	--buildonly|--build-only)
113		TORTURE_BUILDONLY=1
114		;;
115	--configs|--config)
116		checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
117		configs="$configs $2"
118		shift
119		;;
120	--cpus)
121		checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
122		cpus=$2
123		TORTURE_ALLOTED_CPUS="$2"
124		if test -z "$TORTURE_REMOTE"
125		then
126			max_cpus="`identify_qemu_vcpus`"
127			if test "$TORTURE_ALLOTED_CPUS" -gt "$max_cpus"
128			then
129				TORTURE_ALLOTED_CPUS=$max_cpus
130			fi
131		fi
132		shift
133		;;
134	--datestamp)
135		checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
136		ds=$2
137		shift
138		;;
139	--defconfig)
140		checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
141		TORTURE_DEFCONFIG=$2
142		shift
143		;;
144	--dryrun)
145		checkarg --dryrun "batches|sched|script" $# "$2" 'batches\|scenarios\|sched\|script' '^--'
146		dryrun=$2
147		shift
148		;;
149	--duration)
150		checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
151		mult=60
152		if echo "$2" | grep -q 's$'
153		then
154			mult=1
155		elif echo "$2" | grep -q 'h$'
156		then
157			mult=3600
158		elif echo "$2" | grep -q 'd$'
159		then
160			mult=86400
161		fi
162		ts=`echo $2 | sed -e 's/[smhd]$//'`
163		dur=$(($ts*mult))
164		shift
165		;;
166	--gdb)
167		TORTURE_KCONFIG_GDB_ARG="CONFIG_DEBUG_INFO=y"; export TORTURE_KCONFIG_GDB_ARG
168		TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
169		TORTURE_QEMU_GDB_ARG="-s -S"; export TORTURE_QEMU_GDB_ARG
170		;;
171	--help|-h)
172		usage
173		;;
174	--interactive)
175		TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
176		;;
177	--jitter)
178		checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
179		jitter="$2"
180		shift
181		;;
182	--kasan)
183		TORTURE_KCONFIG_KASAN_ARG="CONFIG_DEBUG_INFO=y CONFIG_KASAN=y"; export TORTURE_KCONFIG_KASAN_ARG
184		if test -n "$torture_qemu_mem_default"
185		then
186			TORTURE_QEMU_MEM=2G
187		fi
188		;;
189	--kconfig|--kconfigs)
190		checkarg --kconfig "(Kconfig options)" $# "$2" '^CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\( CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\)\)*$' '^error$'
191		TORTURE_KCONFIG_ARG="`echo "$TORTURE_KCONFIG_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
192		shift
193		;;
194	--kcsan)
195		TORTURE_KCONFIG_KCSAN_ARG="CONFIG_DEBUG_INFO=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
196		;;
197	--kmake-arg|--kmake-args)
198		checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
199		TORTURE_KMAKE_ARG="`echo "$TORTURE_KMAKE_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
200		shift
201		;;
202	--mac)
203		checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
204		TORTURE_QEMU_MAC=$2
205		shift
206		;;
207	--memory)
208		checkarg --memory "(memory size)" $# "$2" '^[0-9]\+[MG]\?$' error
209		TORTURE_QEMU_MEM=$2
210		torture_qemu_mem_default=
211		shift
212		;;
213	--no-initrd)
214		TORTURE_INITRD=""; export TORTURE_INITRD
215		;;
216	--qemu-args|--qemu-arg)
217		checkarg --qemu-args "(qemu arguments)" $# "$2" '^-' '^error'
218		TORTURE_QEMU_ARG="`echo "$TORTURE_QEMU_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
219		shift
220		;;
221	--qemu-cmd)
222		checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
223		TORTURE_QEMU_CMD="$2"
224		shift
225		;;
226	--remote)
227		TORTURE_REMOTE=1
228		;;
229	--results)
230		checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
231		resdir=$2
232		shift
233		;;
234	--shutdown-grace)
235		checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
236		TORTURE_SHUTDOWN_GRACE=$2
237		shift
238		;;
239	--torture)
240		checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
241		TORTURE_SUITE=$2
242		TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
243		shift
244		if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
245		then
246			# If you really want jitter for refscale or
247			# rcuscale, specify it after specifying the rcuscale
248			# or the refscale.  (But why jitter in these cases?)
249			jitter=0
250		fi
251		;;
252	--trust-make)
253		TORTURE_TRUST_MAKE="y"
254		;;
255	*)
256		echo Unknown argument $1
257		usage
258		;;
259	esac
260	shift
261done
262
263if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh
264then
265	:
266else
267	echo No initrd and unable to create one, aborting test >&2
268	exit 1
269fi
270
271CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG
272
273defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
274if test -z "$configs"
275then
276	configs=$defaultconfigs
277fi
278
279if test -z "$resdir"
280then
281	resdir=$RCUTORTURE/res
282fi
283
284# Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
285configs_derep=
286for CF in $configs
287do
288	case $CF in
289	[0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**|[0-9][0-9][0-9][0-9]\**)
290		config_reps=`echo $CF | sed -e 's/\*.*$//'`
291		CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
292		;;
293	*)
294		config_reps=1
295		CF1=$CF
296		;;
297	esac
298	for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
299	do
300		configs_derep="$configs_derep $CF1"
301	done
302done
303touch $T/cfgcpu
304configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
305if test -n "$TORTURE_KCONFIG_GDB_ARG"
306then
307	if test "`echo $configs_derep | wc -w`" -gt 1
308	then
309		echo "The --config list is: $configs_derep."
310		echo "Only one --config permitted with --gdb, terminating."
311		exit 1
312	fi
313fi
314echo 'BEGIN {' > $T/cfgcpu.awk
315for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
316do
317	if test -f "$CONFIGFRAG/$CF1"
318	then
319		if echo "$TORTURE_KCONFIG_ARG" | grep -q '\<CONFIG_NR_CPUS='
320		then
321			echo "$TORTURE_KCONFIG_ARG" | tr -s ' ' | tr ' ' '\012' > $T/KCONFIG_ARG
322			cpu_count=`configNR_CPUS.sh $T/KCONFIG_ARG`
323		else
324			cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
325		fi
326		cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
327		cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
328		echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
329	else
330		echo "The --configs file $CF1 does not exist, terminating."
331		exit 1
332	fi
333done
334cat << '___EOF___' >> $T/cfgcpu.awk
335}
336{
337	for (i = 1; i <= NF; i++)
338		print $i, scenariocpu[$i];
339}
340___EOF___
341echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
342sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
343
344# Use a greedy bin-packing algorithm, sorting the list accordingly.
345awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
346BEGIN {
347	njobs = 0;
348}
349
350{
351	# Read file of tests and corresponding required numbers of CPUs.
352	cf[njobs] = $1;
353	cpus[njobs] = $2;
354	njobs++;
355}
356
357END {
358	batch = 0;
359	nc = -1;
360
361	# Each pass through the following loop creates on test batch that
362	# can be executed concurrently given ncpus.  Note that a given test
363	# that requires more than the available CPUs will run in its own
364	# batch.  Such tests just have to make do with what is available.
365	while (nc != ncpus) {
366		batch++;
367		nc = ncpus;
368
369		# Each pass through the following loop considers one
370		# test for inclusion in the current batch.
371		for (i = 0; i < njobs; i++) {
372			if (done[i])
373				continue; # Already part of a batch.
374			if (nc >= cpus[i] || nc == ncpus) {
375
376				# This test fits into the current batch.
377				done[i] = batch;
378				nc -= cpus[i];
379				if (nc <= 0)
380					break; # Too-big test in its own batch.
381			}
382		}
383	}
384
385	# Dump out the tests in batch order.
386	for (b = 1; b <= batch; b++)
387		for (i = 0; i < njobs; i++)
388			if (done[i] == b)
389				print cf[i], cpus[i];
390}'
391
392# Generate a script to execute the tests in appropriate batches.
393cat << ___EOF___ > $T/script
394CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
395RCUTORTURE="$RCUTORTURE"; export RCUTORTURE
396PATH="$PATH"; export PATH
397TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
398TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
399TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
400TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
401TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
402TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
403TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG
404TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG
405TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG
406TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG
407TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG
408TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
409TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD
410TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
411TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
412TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
413TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM
414TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
415TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
416TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE
417if ! test -e $resdir
418then
419	mkdir -p "$resdir" || :
420fi
421mkdir -p $resdir/$ds
422TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR
423TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE
424echo Results directory: $resdir/$ds
425echo $scriptname $args
426touch $resdir/$ds/log
427echo $scriptname $args >> $resdir/$ds/log
428echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite
429echo Build directory: `pwd` > $resdir/$ds/testid.txt
430if test -d .git
431then
432	echo Current commit: `git rev-parse HEAD` >> $resdir/$ds/testid.txt
433	echo >> $resdir/$ds/testid.txt
434	echo ' ---' Output of "'"git status"'": >> $resdir/$ds/testid.txt
435	git status >> $resdir/$ds/testid.txt
436	echo >> $resdir/$ds/testid.txt
437	echo >> $resdir/$ds/testid.txt
438	echo ' ---' Output of "'"git diff HEAD"'": >> $resdir/$ds/testid.txt
439	git diff HEAD >> $resdir/$ds/testid.txt
440fi
441___EOF___
442kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
443kvm-get-cpus-script.sh $T/cpuarray.awk $T/dumpbatches.awk
444cat << '___EOF___' >> $T/dumpbatches.awk
445BEGIN {
446	i = 0;
447}
448
449{
450	cf[i] = $1;
451	cpus[i] = $2;
452	i++;
453}
454
455# Dump out the scripting required to run one test batch.
456function dump(first, pastlast, batchnum,  affinitylist)
457{
458	print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log";
459	print "needqemurun="
460	jn=1
461	njitter = 0;
462	split(jitter, ja);
463	if (ja[1] == -1 && ncpus == 0)
464		njitter = 1;
465	else if (ja[1] == -1)
466		njitter = ncpus;
467	else
468		njitter = ja[1];
469	print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START";
470	print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP"
471	for (j = first; j < pastlast; j++) {
472		cpusr[jn] = cpus[j];
473		if (cfrep[cf[j]] == "") {
474			cfr[jn] = cf[j];
475			cfrep[cf[j]] = 1;
476		} else {
477			cfrep[cf[j]]++;
478			cfr[jn] = cf[j] "." cfrep[cf[j]];
479		}
480		builddir=rd cfr[jn] "/build";
481		if (cpusr[jn] > ncpus && ncpus != 0)
482			ovf = "-ovf";
483		else
484			ovf = "";
485		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log";
486		print "mkdir " rd cfr[jn] " || :";
487		print "touch " builddir ".wait";
488		affinitylist = "";
489		if (gotcpus()) {
490			affinitylist = nextcpus(cpusr[jn]);
491		}
492		if (affinitylist ~ /^[0-9,-][0-9,-]*$/)
493			print "export TORTURE_AFFINITY=" affinitylist;
494		else
495			print "export TORTURE_AFFINITY=";
496		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 &"
497		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log";
498		print "while test -f " builddir ".wait"
499		print "do"
500		print "\tsleep 1"
501		print "done"
502		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log";
503		jn++;
504	}
505	print "runfiles="
506	for (j = 1; j < jn; j++) {
507		builddir=rd cfr[j] "/build";
508		if (TORTURE_BUILDONLY)
509			print "rm -f " builddir ".ready"
510		else
511			print "mv " builddir ".ready " builddir ".run"
512			print "runfiles=\"$runfiles " builddir ".run\""
513		fi
514		print "if test -f \"" rd cfr[j] "/builtkernel\""
515		print "then"
516		print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log";
517		print "\tneedqemurun=1"
518		print "fi"
519	}
520	if (TORTURE_BUILDONLY && njitter != 0) {
521		njitter = 0;
522		print "echo Build-only run, so suppressing jitter | tee -a " rd "log"
523	}
524	if (TORTURE_BUILDONLY) {
525		print "needqemurun="
526	}
527	print "if test -n \"$needqemurun\""
528	print "then"
529	print "\techo ---- Starting kernels. `date` | tee -a " rd "log";
530	print "\t$TORTURE_JITTER_START";
531	print "\twhile ls $runfiles > /dev/null 2>&1"
532	print "\tdo"
533	print "\t\t:"
534	print "\tdone"
535	print "\t$TORTURE_JITTER_STOP";
536	print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log";
537	print "else"
538	print "\twait"
539	print "\techo ---- No kernel runs. `date` | tee -a " rd "log";
540	print "fi"
541	for (j = 1; j < jn; j++) {
542		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log";
543		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out | tee -a " rd "log";
544	}
545}
546
547END {
548	njobs = i;
549	nc = ncpus;
550	first = 0;
551	batchnum = 1;
552
553	# Each pass through the following loop considers one test.
554	for (i = 0; i < njobs; i++) {
555		if (ncpus == 0) {
556			# Sequential test specified, each test its own batch.
557			dump(i, i + 1, batchnum);
558			first = i;
559			batchnum++;
560		} else if (nc < cpus[i] && i != 0) {
561			# Out of CPUs, dump out a batch.
562			dump(first, i, batchnum);
563			first = i;
564			nc = ncpus;
565			batchnum++;
566		}
567		# Account for the CPUs needed by the current test.
568		nc -= cpus[i];
569	}
570	# Dump the last batch.
571	if (ncpus != 0)
572		dump(first, i, batchnum);
573}
574___EOF___
575awk < $T/cfgcpu.pack \
576	-v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
577	-v CONFIGDIR="$CONFIGFRAG/" \
578	-v RCUTORTURE="$RCUTORTURE" \
579	-v ncpus=$cpus \
580	-v jitter="$jitter" \
581	-v rd=$resdir/$ds/ \
582	-v dur=$dur \
583	-v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
584	-v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
585	-f $T/dumpbatches.awk >> $T/script
586echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script
587
588# Extract the tests and their batches from the script.
589egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
590	sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' |
591	awk '
592	/^----Start/ {
593		batchno = $3;
594		next;
595	}
596	{
597		print batchno, $1, $2
598	}' > $T/batches
599
600# As above, but one line per batch.
601grep -v '^#' $T/batches | awk '
602BEGIN {
603	oldbatch = 1;
604}
605
606{
607	if (oldbatch != $1) {
608		print ++n ". " curbatch;
609		curbatch = "";
610		oldbatch = $1;
611	}
612	curbatch = curbatch " " $2;
613}
614
615END {
616	print ++n ". " curbatch;
617}' > $T/scenarios
618
619if test "$dryrun" = script
620then
621	cat $T/script
622	exit 0
623elif test "$dryrun" = sched
624then
625	# Extract the test run schedule from the script.
626	egrep 'Start batch|Starting build\.' $T/script | grep -v ">>" |
627		sed -e 's/:.*$//' -e 's/^echo //'
628	nbuilds="`grep 'Starting build\.' $T/script |
629		  grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' |
630		  awk '{ print $1 }' | grep -v '\.' | wc -l`"
631	echo Total number of builds: $nbuilds
632	nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`"
633	echo Total number of batches: $nbatches
634	exit 0
635elif test "$dryrun" = batches
636then
637	cat $T/batches
638	exit 0
639elif test "$dryrun" = scenarios
640then
641	cat $T/scenarios
642	exit 0
643else
644	# Not a dryrun.  Record the batches and the number of CPUs, then run the script.
645	bash $T/script
646	ret=$?
647	cp $T/batches $resdir/$ds/batches
648	cp $T/scenarios $resdir/$ds/scenarios
649	echo '#' cpus=$cpus >> $resdir/$ds/batches
650	exit $ret
651fi
652
653# 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
654# Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop
655# Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y"
656# Control buffer size: --bootargs trace_buf_size=3k
657# Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops
658# Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu
659# Heavy-handed way to also dump on warnings: --bootargs panic_on_warn
660