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 
14 scriptname=$0
15 args="$*"
16 
17 T="`mktemp -d ${TMPDIR-/tmp}/kvm.sh.XXXXXX`"
18 trap 'rm -rf $T' 0
19 
20 cd `dirname $scriptname`/../../../../../
21 
22 # This script knows only English.
23 LANG=en_US.UTF-8; export LANG
24 
25 dur=$((30*60))
26 dryrun=""
27 RCUTORTURE="`pwd`/tools/testing/selftests/rcutorture"; export RCUTORTURE
28 PATH=${RCUTORTURE}/bin:$PATH; export PATH
29 . functions.sh
30 
31 TORTURE_ALLOTED_CPUS="`identify_qemu_vcpus`"
32 TORTURE_DEFCONFIG=defconfig
33 TORTURE_BOOT_IMAGE=""
34 TORTURE_BUILDONLY=
35 TORTURE_INITRD="$RCUTORTURE/initrd"; export TORTURE_INITRD
36 TORTURE_KCONFIG_ARG=""
37 TORTURE_KCONFIG_GDB_ARG=""
38 TORTURE_BOOT_GDB_ARG=""
39 TORTURE_QEMU_GDB_ARG=""
40 TORTURE_JITTER_START=""
41 TORTURE_JITTER_STOP=""
42 TORTURE_KCONFIG_KASAN_ARG=""
43 TORTURE_KCONFIG_KCSAN_ARG=""
44 TORTURE_KMAKE_ARG=""
45 TORTURE_QEMU_MEM=512
46 torture_qemu_mem_default=1
47 TORTURE_REMOTE=
48 TORTURE_SHUTDOWN_GRACE=180
49 TORTURE_SUITE=rcu
50 TORTURE_MOD=rcutorture
51 TORTURE_TRUST_MAKE=""
52 debuginfo="CONFIG_DEBUG_INFO_NONE=n CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y"
53 resdir=""
54 configs=""
55 cpus=0
56 ds=`date +%Y.%m.%d-%H.%M.%S`
57 jitter="-1"
58 
59 startdate="`date`"
60 starttime="`get_starttime`"
61 
62 usage () {
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 "       --debug-info"
73 	echo "       --dryrun batches|scenarios|sched|script"
74 	echo "       --duration minutes | <seconds>s | <hours>h | <days>d"
75 	echo "       --gdb"
76 	echo "       --help"
77 	echo "       --interactive"
78 	echo "       --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
79 	echo "       --kasan"
80 	echo "       --kconfig Kconfig-options"
81 	echo "       --kcsan"
82 	echo "       --kmake-arg kernel-make-arguments"
83 	echo "       --mac nn:nn:nn:nn:nn:nn"
84 	echo "       --memory megabytes|nnnG"
85 	echo "       --no-initrd"
86 	echo "       --qemu-args qemu-arguments"
87 	echo "       --qemu-cmd qemu-system-..."
88 	echo "       --remote"
89 	echo "       --results absolute-pathname"
90 	echo "       --shutdown-grace seconds"
91 	echo "       --torture lock|rcu|rcuscale|refscale|scf|X*"
92 	echo "       --trust-make"
93 	exit 1
94 }
95 
96 while test $# -gt 0
97 do
98 	case "$1" in
99 	--allcpus)
100 		cpus=$TORTURE_ALLOTED_CPUS
101 		max_cpus=$TORTURE_ALLOTED_CPUS
102 		;;
103 	--bootargs|--bootarg)
104 		checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
105 		TORTURE_BOOTARGS="$TORTURE_BOOTARGS $2"
106 		shift
107 		;;
108 	--bootimage)
109 		checkarg --bootimage "(relative path to kernel boot image)" "$#" "$2" '[a-zA-Z0-9][a-zA-Z0-9_]*' '^--'
110 		TORTURE_BOOT_IMAGE="$2"
111 		shift
112 		;;
113 	--buildonly|--build-only)
114 		TORTURE_BUILDONLY=1
115 		;;
116 	--configs|--config)
117 		checkarg --configs "(list of config files)" "$#" "$2" '^[^/.a-z]\+$' '^--'
118 		configs="$configs $2"
119 		shift
120 		;;
121 	--cpus)
122 		checkarg --cpus "(number)" "$#" "$2" '^[0-9]*$' '^--'
123 		cpus=$2
124 		TORTURE_ALLOTED_CPUS="$2"
125 		if test -z "$TORTURE_REMOTE"
126 		then
127 			max_cpus="`identify_qemu_vcpus`"
128 			if test "$TORTURE_ALLOTED_CPUS" -gt "$max_cpus"
129 			then
130 				TORTURE_ALLOTED_CPUS=$max_cpus
131 			fi
132 		fi
133 		shift
134 		;;
135 	--datestamp)
136 		checkarg --datestamp "(relative pathname)" "$#" "$2" '^[a-zA-Z0-9._/-]*$' '^--'
137 		ds=$2
138 		shift
139 		;;
140 	--debug-info|--debuginfo)
141 		if test -z "$TORTURE_KCONFIG_KCSAN_ARG" && test -z "$TORTURE_BOOT_GDB_ARG"
142 		then
143 			TORTURE_KCONFIG_KCSAN_ARG="$debuginfo"; export TORTURE_KCONFIG_KCSAN_ARG
144 			TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
145 		else
146 			echo "Ignored redundant --debug-info (implied by --kcsan &c)"
147 		fi
148 		;;
149 	--defconfig)
150 		checkarg --defconfig "defconfigtype" "$#" "$2" '^[^/][^/]*$' '^--'
151 		TORTURE_DEFCONFIG=$2
152 		shift
153 		;;
154 	--dryrun)
155 		checkarg --dryrun "batches|sched|script" $# "$2" 'batches\|scenarios\|sched\|script' '^--'
156 		dryrun=$2
157 		shift
158 		;;
159 	--duration)
160 		checkarg --duration "(minutes)" $# "$2" '^[0-9][0-9]*\(s\|m\|h\|d\|\)$' '^error'
161 		mult=60
162 		if echo "$2" | grep -q 's$'
163 		then
164 			mult=1
165 		elif echo "$2" | grep -q 'h$'
166 		then
167 			mult=3600
168 		elif echo "$2" | grep -q 'd$'
169 		then
170 			mult=86400
171 		fi
172 		ts=`echo $2 | sed -e 's/[smhd]$//'`
173 		dur=$(($ts*mult))
174 		shift
175 		;;
176 	--gdb)
177 		TORTURE_KCONFIG_GDB_ARG="$debuginfo"; export TORTURE_KCONFIG_GDB_ARG
178 		TORTURE_BOOT_GDB_ARG="nokaslr"; export TORTURE_BOOT_GDB_ARG
179 		TORTURE_QEMU_GDB_ARG="-s -S"; export TORTURE_QEMU_GDB_ARG
180 		;;
181 	--help|-h)
182 		usage
183 		;;
184 	--interactive)
185 		TORTURE_QEMU_INTERACTIVE=1; export TORTURE_QEMU_INTERACTIVE
186 		;;
187 	--jitter)
188 		checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
189 		jitter="$2"
190 		shift
191 		;;
192 	--kasan)
193 		TORTURE_KCONFIG_KASAN_ARG="$debuginfo CONFIG_KASAN=y"; export TORTURE_KCONFIG_KASAN_ARG
194 		if test -n "$torture_qemu_mem_default"
195 		then
196 			TORTURE_QEMU_MEM=2G
197 		fi
198 		;;
199 	--kconfig|--kconfigs)
200 		checkarg --kconfig "(Kconfig options)" $# "$2" '^\(#CHECK#\)\?CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\|"[^"]*"\)\( \(#CHECK#\)\?CONFIG_[A-Z0-9_]\+=\([ynm]\|[0-9]\+\|"[^"]*"\)\)*$' '^error$'
201 		TORTURE_KCONFIG_ARG="`echo "$TORTURE_KCONFIG_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
202 		shift
203 		;;
204 	--kcsan)
205 		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
206 		;;
207 	--kmake-arg|--kmake-args)
208 		checkarg --kmake-arg "(kernel make arguments)" $# "$2" '.*' '^error$'
209 		TORTURE_KMAKE_ARG="`echo "$TORTURE_KMAKE_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
210 		shift
211 		;;
212 	--mac)
213 		checkarg --mac "(MAC address)" $# "$2" '^\([0-9a-fA-F]\{2\}:\)\{5\}[0-9a-fA-F]\{2\}$' error
214 		TORTURE_QEMU_MAC=$2
215 		shift
216 		;;
217 	--memory)
218 		checkarg --memory "(memory size)" $# "$2" '^[0-9]\+[MG]\?$' error
219 		TORTURE_QEMU_MEM=$2
220 		torture_qemu_mem_default=
221 		shift
222 		;;
223 	--no-initrd)
224 		TORTURE_INITRD=""; export TORTURE_INITRD
225 		;;
226 	--qemu-args|--qemu-arg)
227 		checkarg --qemu-args "(qemu arguments)" $# "$2" '^-' '^error'
228 		TORTURE_QEMU_ARG="`echo "$TORTURE_QEMU_ARG $2" | sed -e 's/^ *//' -e 's/ *$//'`"
229 		shift
230 		;;
231 	--qemu-cmd)
232 		checkarg --qemu-cmd "(qemu-system-...)" $# "$2" 'qemu-system-' '^--'
233 		TORTURE_QEMU_CMD="$2"
234 		shift
235 		;;
236 	--remote)
237 		TORTURE_REMOTE=1
238 		;;
239 	--results)
240 		checkarg --results "(absolute pathname)" "$#" "$2" '^/' '^error'
241 		resdir=$2
242 		shift
243 		;;
244 	--shutdown-grace)
245 		checkarg --shutdown-grace "(seconds)" "$#" "$2" '^[0-9]*$' '^error'
246 		TORTURE_SHUTDOWN_GRACE=$2
247 		shift
248 		;;
249 	--torture)
250 		checkarg --torture "(suite name)" "$#" "$2" '^\(lock\|rcu\|rcuscale\|refscale\|scf\|X.*\)$' '^--'
251 		TORTURE_SUITE=$2
252 		TORTURE_MOD="`echo $TORTURE_SUITE | sed -e 's/^\(lock\|rcu\|scf\)$/\1torture/'`"
253 		shift
254 		if test "$TORTURE_SUITE" = rcuscale || test "$TORTURE_SUITE" = refscale
255 		then
256 			# If you really want jitter for refscale or
257 			# rcuscale, specify it after specifying the rcuscale
258 			# or the refscale.  (But why jitter in these cases?)
259 			jitter=0
260 		fi
261 		;;
262 	--trust-make)
263 		TORTURE_TRUST_MAKE="y"
264 		;;
265 	*)
266 		echo Unknown argument $1
267 		usage
268 		;;
269 	esac
270 	shift
271 done
272 
273 if test -n "$dryrun" || test -z "$TORTURE_INITRD" || tools/testing/selftests/rcutorture/bin/mkinitrd.sh
274 then
275 	:
276 else
277 	echo No initrd and unable to create one, aborting test >&2
278 	exit 1
279 fi
280 
281 CONFIGFRAG=${RCUTORTURE}/configs/${TORTURE_SUITE}; export CONFIGFRAG
282 
283 defaultconfigs="`tr '\012' ' ' < $CONFIGFRAG/CFLIST`"
284 if test -z "$configs"
285 then
286 	configs=$defaultconfigs
287 fi
288 
289 if test -z "$resdir"
290 then
291 	resdir=$RCUTORTURE/res
292 fi
293 
294 # Create a file of test-name/#cpus pairs, sorted by decreasing #cpus.
295 configs_derep=
296 for CF in $configs
297 do
298 	case $CF in
299 	[0-9]\**|[0-9][0-9]\**|[0-9][0-9][0-9]\**|[0-9][0-9][0-9][0-9]\**)
300 		config_reps=`echo $CF | sed -e 's/\*.*$//'`
301 		CF1=`echo $CF | sed -e 's/^[^*]*\*//'`
302 		;;
303 	*)
304 		config_reps=1
305 		CF1=$CF
306 		;;
307 	esac
308 	for ((cur_rep=0;cur_rep<$config_reps;cur_rep++))
309 	do
310 		configs_derep="$configs_derep $CF1"
311 	done
312 done
313 touch $T/cfgcpu
314 configs_derep="`echo $configs_derep | sed -e "s/\<CFLIST\>/$defaultconfigs/g"`"
315 if test -n "$TORTURE_KCONFIG_GDB_ARG"
316 then
317 	if test "`echo $configs_derep | wc -w`" -gt 1
318 	then
319 		echo "The --config list is: $configs_derep."
320 		echo "Only one --config permitted with --gdb, terminating."
321 		exit 1
322 	fi
323 fi
324 echo 'BEGIN {' > $T/cfgcpu.awk
325 for CF1 in `echo $configs_derep | tr -s ' ' '\012' | sort -u`
326 do
327 	if test -f "$CONFIGFRAG/$CF1"
328 	then
329 		if echo "$TORTURE_KCONFIG_ARG" | grep -q '\<CONFIG_NR_CPUS='
330 		then
331 			echo "$TORTURE_KCONFIG_ARG" | tr -s ' ' | tr ' ' '\012' > $T/KCONFIG_ARG
332 			cpu_count=`configNR_CPUS.sh $T/KCONFIG_ARG`
333 		else
334 			cpu_count=`configNR_CPUS.sh $CONFIGFRAG/$CF1`
335 		fi
336 		cpu_count=`configfrag_boot_cpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
337 		cpu_count=`configfrag_boot_maxcpus "$TORTURE_BOOTARGS" "$CONFIGFRAG/$CF1" "$cpu_count"`
338 		echo 'scenariocpu["'"$CF1"'"] = '"$cpu_count"';' >> $T/cfgcpu.awk
339 	else
340 		echo "The --configs file $CF1 does not exist, terminating."
341 		exit 1
342 	fi
343 done
344 cat << '___EOF___' >> $T/cfgcpu.awk
345 }
346 {
347 	for (i = 1; i <= NF; i++)
348 		print $i, scenariocpu[$i];
349 }
350 ___EOF___
351 echo $configs_derep | awk -f $T/cfgcpu.awk > $T/cfgcpu
352 sort -k2nr $T/cfgcpu -T="$T" > $T/cfgcpu.sort
353 
354 # Use a greedy bin-packing algorithm, sorting the list accordingly.
355 awk < $T/cfgcpu.sort > $T/cfgcpu.pack -v ncpus=$cpus '
356 BEGIN {
357 	njobs = 0;
358 }
359 
360 {
361 	# Read file of tests and corresponding required numbers of CPUs.
362 	cf[njobs] = $1;
363 	cpus[njobs] = $2;
364 	njobs++;
365 }
366 
367 END {
368 	batch = 0;
369 	nc = -1;
370 
371 	# Each pass through the following loop creates on test batch that
372 	# can be executed concurrently given ncpus.  Note that a given test
373 	# that requires more than the available CPUs will run in its own
374 	# batch.  Such tests just have to make do with what is available.
375 	while (nc != ncpus) {
376 		batch++;
377 		nc = ncpus;
378 
379 		# Each pass through the following loop considers one
380 		# test for inclusion in the current batch.
381 		for (i = 0; i < njobs; i++) {
382 			if (done[i])
383 				continue; # Already part of a batch.
384 			if (nc >= cpus[i] || nc == ncpus) {
385 
386 				# This test fits into the current batch.
387 				done[i] = batch;
388 				nc -= cpus[i];
389 				if (nc <= 0)
390 					break; # Too-big test in its own batch.
391 			}
392 		}
393 	}
394 
395 	# Dump out the tests in batch order.
396 	for (b = 1; b <= batch; b++)
397 		for (i = 0; i < njobs; i++)
398 			if (done[i] == b)
399 				print cf[i], cpus[i];
400 }'
401 
402 # Generate a script to execute the tests in appropriate batches.
403 cat << ___EOF___ > $T/script
404 CONFIGFRAG="$CONFIGFRAG"; export CONFIGFRAG
405 RCUTORTURE="$RCUTORTURE"; export RCUTORTURE
406 PATH="$PATH"; export PATH
407 TORTURE_ALLOTED_CPUS="$TORTURE_ALLOTED_CPUS"; export TORTURE_ALLOTED_CPUS
408 TORTURE_BOOT_IMAGE="$TORTURE_BOOT_IMAGE"; export TORTURE_BOOT_IMAGE
409 TORTURE_BUILDONLY="$TORTURE_BUILDONLY"; export TORTURE_BUILDONLY
410 TORTURE_DEFCONFIG="$TORTURE_DEFCONFIG"; export TORTURE_DEFCONFIG
411 TORTURE_INITRD="$TORTURE_INITRD"; export TORTURE_INITRD
412 TORTURE_KCONFIG_ARG="$TORTURE_KCONFIG_ARG"; export TORTURE_KCONFIG_ARG
413 TORTURE_KCONFIG_GDB_ARG="$TORTURE_KCONFIG_GDB_ARG"; export TORTURE_KCONFIG_GDB_ARG
414 TORTURE_BOOT_GDB_ARG="$TORTURE_BOOT_GDB_ARG"; export TORTURE_BOOT_GDB_ARG
415 TORTURE_QEMU_GDB_ARG="$TORTURE_QEMU_GDB_ARG"; export TORTURE_QEMU_GDB_ARG
416 TORTURE_KCONFIG_KASAN_ARG="$TORTURE_KCONFIG_KASAN_ARG"; export TORTURE_KCONFIG_KASAN_ARG
417 TORTURE_KCONFIG_KCSAN_ARG="$TORTURE_KCONFIG_KCSAN_ARG"; export TORTURE_KCONFIG_KCSAN_ARG
418 TORTURE_KMAKE_ARG="$TORTURE_KMAKE_ARG"; export TORTURE_KMAKE_ARG
419 TORTURE_MOD="$TORTURE_MOD"; export TORTURE_MOD
420 TORTURE_QEMU_CMD="$TORTURE_QEMU_CMD"; export TORTURE_QEMU_CMD
421 TORTURE_QEMU_INTERACTIVE="$TORTURE_QEMU_INTERACTIVE"; export TORTURE_QEMU_INTERACTIVE
422 TORTURE_QEMU_MAC="$TORTURE_QEMU_MAC"; export TORTURE_QEMU_MAC
423 TORTURE_QEMU_MEM="$TORTURE_QEMU_MEM"; export TORTURE_QEMU_MEM
424 TORTURE_SHUTDOWN_GRACE="$TORTURE_SHUTDOWN_GRACE"; export TORTURE_SHUTDOWN_GRACE
425 TORTURE_SUITE="$TORTURE_SUITE"; export TORTURE_SUITE
426 TORTURE_TRUST_MAKE="$TORTURE_TRUST_MAKE"; export TORTURE_TRUST_MAKE
427 if ! test -e $resdir
428 then
429 	mkdir -p "$resdir" || :
430 fi
431 mkdir -p $resdir/$ds
432 TORTURE_RESDIR="$resdir/$ds"; export TORTURE_RESDIR
433 TORTURE_STOPFILE="$resdir/$ds/STOP.1"; export TORTURE_STOPFILE
434 echo Results directory: $resdir/$ds
435 echo $scriptname $args
436 touch $resdir/$ds/log
437 echo $scriptname $args >> $resdir/$ds/log
438 echo ${TORTURE_SUITE} > $resdir/$ds/torture_suite
439 echo Build directory: `pwd` > $resdir/$ds/testid.txt
440 if test -d .git
441 then
442 	echo Current commit: `git rev-parse HEAD` >> $resdir/$ds/testid.txt
443 	echo >> $resdir/$ds/testid.txt
444 	echo ' ---' Output of "'"git status"'": >> $resdir/$ds/testid.txt
445 	git status >> $resdir/$ds/testid.txt
446 	echo >> $resdir/$ds/testid.txt
447 	echo >> $resdir/$ds/testid.txt
448 	echo ' ---' Output of "'"git diff HEAD"'": >> $resdir/$ds/testid.txt
449 	git diff HEAD >> $resdir/$ds/testid.txt
450 fi
451 ___EOF___
452 kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
453 kvm-get-cpus-script.sh $T/cpuarray.awk $T/dumpbatches.awk
454 cat << '___EOF___' >> $T/dumpbatches.awk
455 BEGIN {
456 	i = 0;
457 }
458 
459 {
460 	cf[i] = $1;
461 	cpus[i] = $2;
462 	i++;
463 }
464 
465 # Dump out the scripting required to run one test batch.
466 function dump(first, pastlast, batchnum,  affinitylist)
467 {
468 	print "echo ----Start batch " batchnum ": `date` | tee -a " rd "log";
469 	print "needqemurun="
470 	jn=1
471 	njitter = 0;
472 	split(jitter, ja);
473 	if (ja[1] == -1 && ncpus == 0)
474 		njitter = 1;
475 	else if (ja[1] == -1)
476 		njitter = ncpus;
477 	else
478 		njitter = ja[1];
479 	print "TORTURE_JITTER_START=\". jitterstart.sh " njitter " " rd " " dur " " ja[2] " " ja[3] "\"; export TORTURE_JITTER_START";
480 	print "TORTURE_JITTER_STOP=\". jitterstop.sh " rd " \"; export TORTURE_JITTER_STOP"
481 	for (j = first; j < pastlast; j++) {
482 		cpusr[jn] = cpus[j];
483 		if (cfrep[cf[j]] == "") {
484 			cfr[jn] = cf[j];
485 			cfrep[cf[j]] = 1;
486 		} else {
487 			cfrep[cf[j]]++;
488 			cfr[jn] = cf[j] "." cfrep[cf[j]];
489 		}
490 		builddir=rd cfr[jn] "/build";
491 		if (cpusr[jn] > ncpus && ncpus != 0)
492 			ovf = "-ovf";
493 		else
494 			ovf = "";
495 		print "echo ", cfr[jn], cpusr[jn] ovf ": Starting build. `date` | tee -a " rd "log";
496 		print "mkdir " rd cfr[jn] " || :";
497 		print "touch " builddir ".wait";
498 		affinitylist = "";
499 		if (gotcpus()) {
500 			affinitylist = nextcpus(cpusr[jn]);
501 		}
502 		if (affinitylist ~ /^[0-9,-][0-9,-]*$/)
503 			print "export TORTURE_AFFINITY=" affinitylist;
504 		else
505 			print "export TORTURE_AFFINITY=";
506 		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 &"
507 		print "echo ", cfr[jn], cpusr[jn] ovf ": Waiting for build to complete. `date` | tee -a " rd "log";
508 		print "while test -f " builddir ".wait"
509 		print "do"
510 		print "\tsleep 1"
511 		print "done"
512 		print "echo ", cfr[jn], cpusr[jn] ovf ": Build complete. `date` | tee -a " rd "log";
513 		jn++;
514 	}
515 	print "runfiles="
516 	for (j = 1; j < jn; j++) {
517 		builddir=rd cfr[j] "/build";
518 		if (TORTURE_BUILDONLY)
519 			print "rm -f " builddir ".ready"
520 		else
521 			print "mv " builddir ".ready " builddir ".run"
522 			print "runfiles=\"$runfiles " builddir ".run\""
523 		fi
524 		print "if test -f \"" rd cfr[j] "/builtkernel\""
525 		print "then"
526 		print "\techo ----", cfr[j], cpusr[j] ovf ": Kernel present. `date` | tee -a " rd "log";
527 		print "\tneedqemurun=1"
528 		print "fi"
529 	}
530 	if (TORTURE_BUILDONLY && njitter != 0) {
531 		njitter = 0;
532 		print "echo Build-only run, so suppressing jitter | tee -a " rd "log"
533 	}
534 	if (TORTURE_BUILDONLY) {
535 		print "needqemurun="
536 	}
537 	print "if test -n \"$needqemurun\""
538 	print "then"
539 	print "\techo ---- Starting kernels. `date` | tee -a " rd "log";
540 	print "\t$TORTURE_JITTER_START";
541 	print "\twhile ls $runfiles > /dev/null 2>&1"
542 	print "\tdo"
543 	print "\t\t:"
544 	print "\tdone"
545 	print "\t$TORTURE_JITTER_STOP";
546 	print "\techo ---- All kernel runs complete. `date` | tee -a " rd "log";
547 	print "else"
548 	print "\twait"
549 	print "\techo ---- No kernel runs. `date` | tee -a " rd "log";
550 	print "fi"
551 	for (j = 1; j < jn; j++) {
552 		print "echo ----", cfr[j], cpusr[j] ovf ": Build/run results: | tee -a " rd "log";
553 		print "cat " rd cfr[j]  "/kvm-test-1-run.sh.out | tee -a " rd "log";
554 	}
555 }
556 
557 END {
558 	njobs = i;
559 	nc = ncpus;
560 	first = 0;
561 	batchnum = 1;
562 
563 	# Each pass through the following loop considers one test.
564 	for (i = 0; i < njobs; i++) {
565 		if (ncpus == 0) {
566 			# Sequential test specified, each test its own batch.
567 			dump(i, i + 1, batchnum);
568 			first = i;
569 			batchnum++;
570 		} else if (nc < cpus[i] && i != 0) {
571 			# Out of CPUs, dump out a batch.
572 			dump(first, i, batchnum);
573 			first = i;
574 			nc = ncpus;
575 			batchnum++;
576 		}
577 		# Account for the CPUs needed by the current test.
578 		nc -= cpus[i];
579 	}
580 	# Dump the last batch.
581 	if (ncpus != 0)
582 		dump(first, i, batchnum);
583 }
584 ___EOF___
585 awk < $T/cfgcpu.pack \
586 	-v TORTURE_BUILDONLY="$TORTURE_BUILDONLY" \
587 	-v CONFIGDIR="$CONFIGFRAG/" \
588 	-v RCUTORTURE="$RCUTORTURE" \
589 	-v ncpus=$cpus \
590 	-v jitter="$jitter" \
591 	-v rd=$resdir/$ds/ \
592 	-v dur=$dur \
593 	-v TORTURE_QEMU_ARG="$TORTURE_QEMU_ARG" \
594 	-v TORTURE_BOOTARGS="$TORTURE_BOOTARGS" \
595 	-f $T/dumpbatches.awk >> $T/script
596 echo kvm-end-run-stats.sh "$resdir/$ds" "$starttime" >> $T/script
597 
598 # Extract the tests and their batches from the script.
599 grep -E 'Start batch|Starting build\.' $T/script | grep -v ">>" |
600 	sed -e 's/:.*$//' -e 's/^echo //' -e 's/-ovf//' |
601 	awk '
602 	/^----Start/ {
603 		batchno = $3;
604 		next;
605 	}
606 	{
607 		print batchno, $1, $2
608 	}' > $T/batches
609 
610 # As above, but one line per batch.
611 grep -v '^#' $T/batches | awk '
612 BEGIN {
613 	oldbatch = 1;
614 }
615 
616 {
617 	if (oldbatch != $1) {
618 		print ++n ". " curbatch;
619 		curbatch = "";
620 		oldbatch = $1;
621 	}
622 	curbatch = curbatch " " $2;
623 }
624 
625 END {
626 	print ++n ". " curbatch;
627 }' > $T/scenarios
628 
629 if test "$dryrun" = script
630 then
631 	cat $T/script
632 	exit 0
633 elif test "$dryrun" = sched
634 then
635 	# Extract the test run schedule from the script.
636 	grep -E 'Start batch|Starting build\.' $T/script | grep -v ">>" |
637 		sed -e 's/:.*$//' -e 's/^echo //'
638 	nbuilds="`grep 'Starting build\.' $T/script |
639 		  grep -v ">>" | sed -e 's/:.*$//' -e 's/^echo //' |
640 		  awk '{ print $1 }' | grep -v '\.' | wc -l`"
641 	echo Total number of builds: $nbuilds
642 	nbatches="`grep 'Start batch' $T/script | grep -v ">>" | wc -l`"
643 	echo Total number of batches: $nbatches
644 	exit 0
645 elif test "$dryrun" = batches
646 then
647 	cat $T/batches
648 	exit 0
649 elif test "$dryrun" = scenarios
650 then
651 	cat $T/scenarios
652 	exit 0
653 else
654 	# Not a dryrun.  Record the batches and the number of CPUs, then run the script.
655 	bash $T/script
656 	ret=$?
657 	cp $T/batches $resdir/$ds/batches
658 	cp $T/scenarios $resdir/$ds/scenarios
659 	echo '#' cpus=$cpus >> $resdir/$ds/batches
660 	exit $ret
661 fi
662 
663 # 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
664 # Function-graph tracing: ftrace=function_graph ftrace_graph_filter=sched_setaffinity,migration_cpu_stop
665 # Also --kconfig "CONFIG_FUNCTION_TRACER=y CONFIG_FUNCTION_GRAPH_TRACER=y"
666 # Control buffer size: --bootargs trace_buf_size=3k
667 # Get trace-buffer dumps on all oopses: --bootargs ftrace_dump_on_oops
668 # Ditto, but dump only the oopsing CPU: --bootargs ftrace_dump_on_oops=orig_cpu
669 # Heavy-handed way to also dump on warnings: --bootargs panic_on_warn=1
670