1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0+
3#
4# Run a kvm-based test of the specified tree on the specified configs.
5# Fully automated run and error checking, no graphics console.
6#
7# Execute this in the source tree.  Do not run it as a background task
8# because qemu does not seem to like that much.
9#
10# Usage: kvm-test-1-run.sh config builddir resdir seconds qemu-args boot_args
11#
12# qemu-args defaults to "-enable-kvm -nographic", along with arguments
13#			specifying the number of CPUs and other options
14#			generated from the underlying CPU architecture.
15# boot_args defaults to value returned by the per_version_boot_params
16#			shell function.
17#
18# Anything you specify for either qemu-args or boot_args is appended to
19# the default values.  The "-smp" value is deduced from the contents of
20# the config fragment.
21#
22# More sophisticated argument parsing is clearly needed.
23#
24# Copyright (C) IBM Corporation, 2011
25#
26# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
27
28T=${TMPDIR-/tmp}/kvm-test-1-run.sh.$$
29trap 'rm -rf $T' 0
30mkdir $T
31
32. functions.sh
33. $CONFIGFRAG/ver_functions.sh
34
35config_template=${1}
36config_dir=`echo $config_template | sed -e 's,/[^/]*$,,'`
37title=`echo $config_template | sed -e 's/^.*\///'`
38builddir=${2}
39resdir=${3}
40if test -z "$resdir" -o ! -d "$resdir" -o ! -w "$resdir"
41then
42	echo "kvm-test-1-run.sh :$resdir: Not a writable directory, cannot store results into it"
43	exit 1
44fi
45echo ' ---' `date`: Starting build
46echo ' ---' Kconfig fragment at: $config_template >> $resdir/log
47touch $resdir/ConfigFragment.input
48
49# Combine additional Kconfig options into an existing set such that
50# newer options win.  The first argument is the Kconfig source ID, the
51# second the to-be-updated file within $T, and the third and final the
52# list of additional Kconfig options.  Note that a $2.tmp file is
53# created when doing the update.
54config_override_param () {
55	if test -n "$3"
56	then
57		echo $3 | sed -e 's/^ *//' -e 's/ *$//' | tr -s " " "\012" > $T/Kconfig_args
58		echo " --- $1" >> $resdir/ConfigFragment.input
59		cat $T/Kconfig_args >> $resdir/ConfigFragment.input
60		config_override.sh $T/$2 $T/Kconfig_args > $T/$2.tmp
61		mv $T/$2.tmp $T/$2
62		# Note that "#CHECK#" is not permitted on commandline.
63	fi
64}
65
66echo > $T/KcList
67config_override_param "$config_dir/CFcommon" KcList "`cat $config_dir/CFcommon 2> /dev/null`"
68config_override_param "$config_template" KcList "`cat $config_template 2> /dev/null`"
69config_override_param "--kasan options" KcList "$TORTURE_KCONFIG_KASAN_ARG"
70config_override_param "--kcsan options" KcList "$TORTURE_KCONFIG_KCSAN_ARG"
71config_override_param "--kconfig argument" KcList "$TORTURE_KCONFIG_ARG"
72cp $T/KcList $resdir/ConfigFragment
73
74base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
75if test "$base_resdir" != "$resdir" -a -f $base_resdir/bzImage -a -f $base_resdir/vmlinux
76then
77	# Rerunning previous test, so use that test's kernel.
78	QEMU="`identify_qemu $base_resdir/vmlinux`"
79	BOOT_IMAGE="`identify_boot_image $QEMU`"
80	KERNEL=$base_resdir/${BOOT_IMAGE##*/} # use the last component of ${BOOT_IMAGE}
81	ln -s $base_resdir/Make*.out $resdir  # for kvm-recheck.sh
82	ln -s $base_resdir/.config $resdir  # for kvm-recheck.sh
83	# Arch-independent indicator
84	touch $resdir/builtkernel
85elif kvm-build.sh $T/KcList $resdir
86then
87	# Had to build a kernel for this test.
88	QEMU="`identify_qemu vmlinux`"
89	BOOT_IMAGE="`identify_boot_image $QEMU`"
90	cp vmlinux $resdir
91	cp .config $resdir
92	cp Module.symvers $resdir > /dev/null || :
93	cp System.map $resdir > /dev/null || :
94	if test -n "$BOOT_IMAGE"
95	then
96		cp $BOOT_IMAGE $resdir
97		KERNEL=$resdir/${BOOT_IMAGE##*/}
98		# Arch-independent indicator
99		touch $resdir/builtkernel
100	else
101		echo No identifiable boot image, not running KVM, see $resdir.
102		echo Do the torture scripts know about your architecture?
103	fi
104	parse-build.sh $resdir/Make.out $title
105else
106	# Build failed.
107	cp .config $resdir || :
108	echo Build failed, not running KVM, see $resdir.
109	if test -f $builddir.wait
110	then
111		mv $builddir.wait $builddir.ready
112	fi
113	exit 1
114fi
115if test -f $builddir.wait
116then
117	mv $builddir.wait $builddir.ready
118fi
119while test -f $builddir.ready
120do
121	sleep 1
122done
123seconds=$4
124qemu_args=$5
125boot_args=$6
126
127kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
128if test -z "$TORTURE_BUILDONLY"
129then
130	echo ' ---' `date`: Starting kernel
131fi
132
133# Generate -smp qemu argument.
134qemu_args="-enable-kvm -nographic $qemu_args"
135cpu_count=`configNR_CPUS.sh $resdir/ConfigFragment`
136cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"`
137if test "$cpu_count" -gt "$TORTURE_ALLOTED_CPUS"
138then
139	echo CPU count limited from $cpu_count to $TORTURE_ALLOTED_CPUS | tee -a $resdir/Warnings
140	cpu_count=$TORTURE_ALLOTED_CPUS
141fi
142qemu_args="`specify_qemu_cpus "$QEMU" "$qemu_args" "$cpu_count"`"
143qemu_args="`specify_qemu_net "$qemu_args"`"
144
145# Generate architecture-specific and interaction-specific qemu arguments
146qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$resdir/console.log"`"
147
148# Generate qemu -append arguments
149qemu_append="`identify_qemu_append "$QEMU"`"
150
151# Pull in Kconfig-fragment boot parameters
152boot_args="`configfrag_boot_params "$boot_args" "$config_template"`"
153# Generate kernel-version-specific boot parameters
154boot_args="`per_version_boot_params "$boot_args" $resdir/.config $seconds`"
155echo $QEMU $qemu_args -m $TORTURE_QEMU_MEM -kernel $KERNEL -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd
156
157if test -n "$TORTURE_BUILDONLY"
158then
159	echo Build-only run specified, boot/test omitted.
160	touch $resdir/buildonly
161	exit 0
162fi
163
164# Decorate qemu-cmd with redirection, backgrounding, and PID capture
165sed -e 's/$/ 2>\&1 \&/' < $resdir/qemu-cmd > $T/qemu-cmd
166echo 'echo $! > $resdir/qemu_pid' >> $T/qemu-cmd
167
168# In case qemu refuses to run...
169echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
170
171# Attempt to run qemu
172( . $T/qemu-cmd; wait `cat  $resdir/qemu_pid`; echo $? > $resdir/qemu-retval ) &
173commandcompleted=0
174sleep 10 # Give qemu's pid a chance to reach the file
175if test -s "$resdir/qemu_pid"
176then
177	qemu_pid=`cat "$resdir/qemu_pid"`
178	echo Monitoring qemu job at pid $qemu_pid
179else
180	qemu_pid=""
181	echo Monitoring qemu job at yet-as-unknown pid
182fi
183while :
184do
185	if test -z "$qemu_pid" -a -s "$resdir/qemu_pid"
186	then
187		qemu_pid=`cat "$resdir/qemu_pid"`
188	fi
189	kruntime=`gawk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
190	if test -z "$qemu_pid" || kill -0 "$qemu_pid" > /dev/null 2>&1
191	then
192		if test $kruntime -ge $seconds -o -f "$TORTURE_STOPFILE"
193		then
194			break;
195		fi
196		sleep 1
197	else
198		commandcompleted=1
199		if test $kruntime -lt $seconds
200		then
201			echo Completed in $kruntime vs. $seconds >> $resdir/Warnings 2>&1
202			grep "^(qemu) qemu:" $resdir/kvm-test-1-run.sh.out >> $resdir/Warnings 2>&1
203			killpid="`sed -n "s/^(qemu) qemu: terminating on signal [0-9]* from pid \([0-9]*\).*$/\1/p" $resdir/Warnings`"
204			if test -n "$killpid"
205			then
206				echo "ps -fp $killpid" >> $resdir/Warnings 2>&1
207				ps -fp $killpid >> $resdir/Warnings 2>&1
208			fi
209		else
210			echo ' ---' `date`: "Kernel done"
211		fi
212		break
213	fi
214done
215if test -z "$qemu_pid" -a -s "$resdir/qemu_pid"
216then
217	qemu_pid=`cat "$resdir/qemu_pid"`
218fi
219if test $commandcompleted -eq 0 -a -n "$qemu_pid"
220then
221	if ! test -f "$TORTURE_STOPFILE"
222	then
223		echo Grace period for qemu job at pid $qemu_pid
224	fi
225	oldline="`tail $resdir/console.log`"
226	while :
227	do
228		if test -f "$TORTURE_STOPFILE"
229		then
230			echo "PID $qemu_pid killed due to run STOP request" >> $resdir/Warnings 2>&1
231			kill -KILL $qemu_pid
232			break
233		fi
234		kruntime=`gawk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
235		if kill -0 $qemu_pid > /dev/null 2>&1
236		then
237			:
238		else
239			break
240		fi
241		must_continue=no
242		newline="`tail $resdir/console.log`"
243		if test "$newline" != "$oldline" && echo $newline | grep -q ' [0-9]\+us : '
244		then
245			must_continue=yes
246		fi
247		last_ts="`tail $resdir/console.log | grep '^\[ *[0-9]\+\.[0-9]\+]' | tail -1 | sed -e 's/^\[ *//' -e 's/\..*$//'`"
248		if test -z "$last_ts"
249		then
250			last_ts=0
251		fi
252		if test "$newline" != "$oldline" -a "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE))
253		then
254			must_continue=yes
255		fi
256		if test $must_continue = no -a $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))
257		then
258			echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1
259			kill -KILL $qemu_pid
260			break
261		fi
262		oldline=$newline
263		sleep 10
264	done
265elif test -z "$qemu_pid"
266then
267	echo Unknown PID, cannot kill qemu command
268fi
269
270parse-console.sh $resdir/console.log $title
271