1#!/bin/bash
2#
3# Run a kvm-based test of the specified tree on the specified configs.
4# Fully automated run and error checking, no graphics console.
5#
6# Execute this in the source tree.  Do not run it as a background task
7# because qemu does not seem to like that much.
8#
9# Usage: kvm-test-1-run.sh config builddir resdir minutes qemu-args boot_args
10#
11# qemu-args defaults to "-nographic", along with arguments specifying the
12#			number of CPUs and other options generated from
13#			the underlying CPU architecture.
14# boot_args defaults to value returned by the per_version_boot_params
15#			shell function.
16#
17# Anything you specify for either qemu-args or boot_args is appended to
18# the default values.  The "-smp" value is deduced from the contents of
19# the config fragment.
20#
21# More sophisticated argument parsing is clearly needed.
22#
23# This program is free software; you can redistribute it and/or modify
24# it under the terms of the GNU General Public License as published by
25# the Free Software Foundation; either version 2 of the License, or
26# (at your option) any later version.
27#
28# This program is distributed in the hope that it will be useful,
29# but WITHOUT ANY WARRANTY; without even the implied warranty of
30# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
31# GNU General Public License for more details.
32#
33# You should have received a copy of the GNU General Public License
34# along with this program; if not, you can access it online at
35# http://www.gnu.org/licenses/gpl-2.0.html.
36#
37# Copyright (C) IBM Corporation, 2011
38#
39# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
40
41grace=120
42
43T=/tmp/kvm-test-1-run.sh.$$
44trap 'rm -rf $T' 0
45touch $T
46
47. $KVM/bin/functions.sh
48. $KVPATH/ver_functions.sh
49
50config_template=${1}
51config_dir=`echo $config_template | sed -e 's,/[^/]*$,,'`
52title=`echo $config_template | sed -e 's/^.*\///'`
53builddir=${2}
54if test -z "$builddir" -o ! -d "$builddir" -o ! -w "$builddir"
55then
56	echo "kvm-test-1-run.sh :$builddir: Not a writable directory, cannot build into it"
57	exit 1
58fi
59resdir=${3}
60if test -z "$resdir" -o ! -d "$resdir" -o ! -w "$resdir"
61then
62	echo "kvm-test-1-run.sh :$resdir: Not a writable directory, cannot store results into it"
63	exit 1
64fi
65cp $config_template $resdir/ConfigFragment
66echo ' ---' `date`: Starting build
67echo ' ---' Kconfig fragment at: $config_template >> $resdir/log
68if test -r "$config_dir/CFcommon"
69then
70	cat < $config_dir/CFcommon >> $T
71fi
72# Optimizations below this point
73# CONFIG_USB=n
74# CONFIG_SECURITY=n
75# CONFIG_NFS_FS=n
76# CONFIG_SOUND=n
77# CONFIG_INPUT_JOYSTICK=n
78# CONFIG_INPUT_TABLET=n
79# CONFIG_INPUT_TOUCHSCREEN=n
80# CONFIG_INPUT_MISC=n
81# CONFIG_INPUT_MOUSE=n
82# # CONFIG_NET=n # disables console access, so accept the slower build.
83# CONFIG_SCSI=n
84# CONFIG_ATA=n
85# CONFIG_FAT_FS=n
86# CONFIG_MSDOS_FS=n
87# CONFIG_VFAT_FS=n
88# CONFIG_ISO9660_FS=n
89# CONFIG_QUOTA=n
90# CONFIG_HID=n
91# CONFIG_CRYPTO=n
92# CONFIG_PCCARD=n
93# CONFIG_PCMCIA=n
94# CONFIG_CARDBUS=n
95# CONFIG_YENTA=n
96if kvm-build.sh $config_template $builddir $T
97then
98	QEMU="`identify_qemu $builddir/vmlinux`"
99	BOOT_IMAGE="`identify_boot_image $QEMU`"
100	cp $builddir/Make*.out $resdir
101	cp $builddir/.config $resdir
102	if test -n "$BOOT_IMAGE"
103	then
104		cp $builddir/$BOOT_IMAGE $resdir
105	else
106		echo No identifiable boot image, not running KVM, see $resdir.
107		echo Do the torture scripts know about your architecture?
108	fi
109	parse-build.sh $resdir/Make.out $title
110	if test -f $builddir.wait
111	then
112		mv $builddir.wait $builddir.ready
113	fi
114else
115	cp $builddir/Make*.out $resdir
116	cp $builddir/.config $resdir || :
117	echo Build failed, not running KVM, see $resdir.
118	if test -f $builddir.wait
119	then
120		mv $builddir.wait $builddir.ready
121	fi
122	exit 1
123fi
124while test -f $builddir.ready
125do
126	sleep 1
127done
128minutes=$4
129seconds=$(($minutes * 60))
130qemu_args=$5
131boot_args=$6
132
133cd $KVM
134kstarttime=`awk 'BEGIN { print systime() }' < /dev/null`
135if test -z "$TORTURE_BUILDONLY"
136then
137	echo ' ---' `date`: Starting kernel
138fi
139
140# Generate -smp qemu argument.
141qemu_args="-nographic $qemu_args"
142cpu_count=`configNR_CPUS.sh $config_template`
143cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"`
144vcpus=`identify_qemu_vcpus`
145if test $cpu_count -gt $vcpus
146then
147	echo CPU count limited from $cpu_count to $vcpus
148	touch $resdir/Warnings
149	echo CPU count limited from $cpu_count to $vcpus >> $resdir/Warnings
150	cpu_count=$vcpus
151fi
152qemu_args="`specify_qemu_cpus "$QEMU" "$qemu_args" "$cpu_count"`"
153
154# Generate architecture-specific and interaction-specific qemu arguments
155qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$builddir/console.log"`"
156
157# Generate qemu -append arguments
158qemu_append="`identify_qemu_append "$QEMU"`"
159
160# Pull in Kconfig-fragment boot parameters
161boot_args="`configfrag_boot_params "$boot_args" "$config_template"`"
162# Generate kernel-version-specific boot parameters
163boot_args="`per_version_boot_params "$boot_args" $builddir/.config $seconds`"
164
165if test -n "$TORTURE_BUILDONLY"
166then
167	echo Build-only run specified, boot/test omitted.
168	touch $resdir/buildonly
169	exit 0
170fi
171echo $QEMU $qemu_args -m 512 -kernel $builddir/$BOOT_IMAGE -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd
172( $QEMU $qemu_args -m 512 -kernel $builddir/$BOOT_IMAGE -append "$qemu_append $boot_args"; echo $? > $resdir/qemu-retval ) &
173qemu_pid=$!
174commandcompleted=0
175echo Monitoring qemu job at pid $qemu_pid
176while :
177do
178	kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
179	if kill -0 $qemu_pid > /dev/null 2>&1
180	then
181		if test $kruntime -ge $seconds
182		then
183			break;
184		fi
185		sleep 1
186	else
187		commandcompleted=1
188		if test $kruntime -lt $seconds
189		then
190			echo Completed in $kruntime vs. $seconds >> $resdir/Warnings 2>&1
191			grep "^(qemu) qemu:" $resdir/kvm-test-1-run.sh.out >> $resdir/Warnings 2>&1
192			killpid="`sed -n "s/^(qemu) qemu: terminating on signal [0-9]* from pid \([0-9]*\).*$/\1/p" $resdir/Warnings`"
193			if test -n "$killpid"
194			then
195				echo "ps -fp $killpid" >> $resdir/Warnings 2>&1
196				ps -fp $killpid >> $resdir/Warnings 2>&1
197			fi
198		else
199			echo ' ---' `date`: Kernel done
200		fi
201		break
202	fi
203done
204if test $commandcompleted -eq 0
205then
206	echo Grace period for qemu job at pid $qemu_pid
207	while :
208	do
209		kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
210		if kill -0 $qemu_pid > /dev/null 2>&1
211		then
212			:
213		else
214			break
215		fi
216		if test $kruntime -ge $((seconds + grace))
217		then
218			echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1
219			kill -KILL $qemu_pid
220			break
221		fi
222		sleep 1
223	done
224fi
225
226cp $builddir/console.log $resdir
227parse-torture.sh $resdir/console.log $title
228parse-console.sh $resdir/console.log $title
229