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https://github.com/brain-hackers/linux-brain.git
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6dc82595ef
For historical reasons, rcutorture places its build products in a tools/testing/selftests/rcutorture/b1 directory using the O= kbuild command-line argument. However, doing this requires that the source directory be pristine: Not just "make clean" pristine, but instead "make mrproper" (or, equivalently, "make distclean") pristine. Therefore, rcutorture executes a "make mrproper" before each build. Unfortunately, "make mrproper" has the side effect of removing pretty much everything, including tags files and cscope databases, which can be inconvenient to people whose workflow centers around a single source tree. This commit therefore makes rcutorture do the build directly in the source directory, removing the need for "make mrproper". This works because all needed build products are moved to their proper place in the "res" directory immediately after the build completes, so that multiple rcutorture kernels can still run concurrently. Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
253 lines
7.7 KiB
Bash
Executable File
253 lines
7.7 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Run a kvm-based test of the specified tree on the specified configs.
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# Fully automated run and error checking, no graphics console.
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#
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# Execute this in the source tree. Do not run it as a background task
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# because qemu does not seem to like that much.
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#
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# Usage: kvm-test-1-run.sh config builddir resdir seconds qemu-args boot_args
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#
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# qemu-args defaults to "-enable-kvm -nographic", along with arguments
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# specifying the number of CPUs and other options
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# generated from the underlying CPU architecture.
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# boot_args defaults to value returned by the per_version_boot_params
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# shell function.
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#
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# Anything you specify for either qemu-args or boot_args is appended to
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# the default values. The "-smp" value is deduced from the contents of
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# the config fragment.
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#
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# More sophisticated argument parsing is clearly needed.
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#
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# Copyright (C) IBM Corporation, 2011
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#
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# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
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T=${TMPDIR-/tmp}/kvm-test-1-run.sh.$$
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trap 'rm -rf $T' 0
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mkdir $T
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. functions.sh
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. $CONFIGFRAG/ver_functions.sh
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config_template=${1}
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config_dir=`echo $config_template | sed -e 's,/[^/]*$,,'`
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title=`echo $config_template | sed -e 's/^.*\///'`
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builddir=${2}
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resdir=${3}
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if test -z "$resdir" -o ! -d "$resdir" -o ! -w "$resdir"
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then
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echo "kvm-test-1-run.sh :$resdir: Not a writable directory, cannot store results into it"
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exit 1
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fi
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echo ' ---' `date`: Starting build
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echo ' ---' Kconfig fragment at: $config_template >> $resdir/log
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touch $resdir/ConfigFragment.input $resdir/ConfigFragment
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if test -r "$config_dir/CFcommon"
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then
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echo " --- $config_dir/CFcommon" >> $resdir/ConfigFragment.input
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cat < $config_dir/CFcommon >> $resdir/ConfigFragment.input
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config_override.sh $config_dir/CFcommon $config_template > $T/Kc1
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grep '#CHECK#' $config_dir/CFcommon >> $resdir/ConfigFragment
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else
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cp $config_template $T/Kc1
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fi
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echo " --- $config_template" >> $resdir/ConfigFragment.input
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cat $config_template >> $resdir/ConfigFragment.input
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grep '#CHECK#' $config_template >> $resdir/ConfigFragment
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if test -n "$TORTURE_KCONFIG_ARG"
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then
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echo $TORTURE_KCONFIG_ARG | tr -s " " "\012" > $T/cmdline
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echo " --- --kconfig argument" >> $resdir/ConfigFragment.input
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cat $T/cmdline >> $resdir/ConfigFragment.input
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config_override.sh $T/Kc1 $T/cmdline > $T/Kc2
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# Note that "#CHECK#" is not permitted on commandline.
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else
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cp $T/Kc1 $T/Kc2
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fi
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cat $T/Kc2 >> $resdir/ConfigFragment
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base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
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if test "$base_resdir" != "$resdir" -a -f $base_resdir/bzImage -a -f $base_resdir/vmlinux
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then
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# Rerunning previous test, so use that test's kernel.
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QEMU="`identify_qemu $base_resdir/vmlinux`"
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BOOT_IMAGE="`identify_boot_image $QEMU`"
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KERNEL=$base_resdir/${BOOT_IMAGE##*/} # use the last component of ${BOOT_IMAGE}
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ln -s $base_resdir/Make*.out $resdir # for kvm-recheck.sh
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ln -s $base_resdir/.config $resdir # for kvm-recheck.sh
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# Arch-independent indicator
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touch $resdir/builtkernel
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elif kvm-build.sh $T/Kc2 $resdir
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then
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# Had to build a kernel for this test.
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QEMU="`identify_qemu vmlinux`"
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BOOT_IMAGE="`identify_boot_image $QEMU`"
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cp vmlinux $resdir
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cp .config $resdir
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cp Module.symvers $resdir > /dev/null || :
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cp System.map $resdir > /dev/null || :
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if test -n "$BOOT_IMAGE"
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then
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cp $BOOT_IMAGE $resdir
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KERNEL=$resdir/${BOOT_IMAGE##*/}
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# Arch-independent indicator
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touch $resdir/builtkernel
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else
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echo No identifiable boot image, not running KVM, see $resdir.
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echo Do the torture scripts know about your architecture?
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fi
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parse-build.sh $resdir/Make.out $title
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else
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# Build failed.
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cp .config $resdir || :
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echo Build failed, not running KVM, see $resdir.
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if test -f $builddir.wait
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then
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mv $builddir.wait $builddir.ready
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fi
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exit 1
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fi
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if test -f $builddir.wait
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then
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mv $builddir.wait $builddir.ready
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fi
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while test -f $builddir.ready
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do
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sleep 1
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done
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seconds=$4
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qemu_args=$5
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boot_args=$6
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cd $KVM
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kstarttime=`awk 'BEGIN { print systime() }' < /dev/null`
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if test -z "$TORTURE_BUILDONLY"
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then
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echo ' ---' `date`: Starting kernel
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fi
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# Generate -smp qemu argument.
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qemu_args="-enable-kvm -nographic $qemu_args"
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cpu_count=`configNR_CPUS.sh $resdir/ConfigFragment`
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cpu_count=`configfrag_boot_cpus "$boot_args" "$config_template" "$cpu_count"`
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vcpus=`identify_qemu_vcpus`
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if test $cpu_count -gt $vcpus
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then
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echo CPU count limited from $cpu_count to $vcpus | tee -a $resdir/Warnings
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cpu_count=$vcpus
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fi
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qemu_args="`specify_qemu_cpus "$QEMU" "$qemu_args" "$cpu_count"`"
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# Generate architecture-specific and interaction-specific qemu arguments
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qemu_args="$qemu_args `identify_qemu_args "$QEMU" "$resdir/console.log"`"
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# Generate qemu -append arguments
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qemu_append="`identify_qemu_append "$QEMU"`"
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# Pull in Kconfig-fragment boot parameters
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boot_args="`configfrag_boot_params "$boot_args" "$config_template"`"
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# Generate kernel-version-specific boot parameters
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boot_args="`per_version_boot_params "$boot_args" $resdir/.config $seconds`"
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if test -n "$TORTURE_BUILDONLY"
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then
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echo Build-only run specified, boot/test omitted.
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touch $resdir/buildonly
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exit 0
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fi
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echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
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echo $QEMU $qemu_args -m $TORTURE_QEMU_MEM -kernel $KERNEL -append \"$qemu_append $boot_args\" > $resdir/qemu-cmd
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( $QEMU $qemu_args -m $TORTURE_QEMU_MEM -kernel $KERNEL -append "$qemu_append $boot_args" > $resdir/qemu-output 2>&1 & echo $! > $resdir/qemu_pid; wait `cat $resdir/qemu_pid`; echo $? > $resdir/qemu-retval ) &
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commandcompleted=0
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sleep 10 # Give qemu's pid a chance to reach the file
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if test -s "$resdir/qemu_pid"
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then
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qemu_pid=`cat "$resdir/qemu_pid"`
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echo Monitoring qemu job at pid $qemu_pid
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else
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qemu_pid=""
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echo Monitoring qemu job at yet-as-unknown pid
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fi
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while :
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do
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if test -z "$qemu_pid" -a -s "$resdir/qemu_pid"
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then
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qemu_pid=`cat "$resdir/qemu_pid"`
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fi
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kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
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if test -z "$qemu_pid" || kill -0 "$qemu_pid" > /dev/null 2>&1
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then
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if test $kruntime -ge $seconds
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then
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break;
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fi
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sleep 1
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else
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commandcompleted=1
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if test $kruntime -lt $seconds
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then
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echo Completed in $kruntime vs. $seconds >> $resdir/Warnings 2>&1
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grep "^(qemu) qemu:" $resdir/kvm-test-1-run.sh.out >> $resdir/Warnings 2>&1
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killpid="`sed -n "s/^(qemu) qemu: terminating on signal [0-9]* from pid \([0-9]*\).*$/\1/p" $resdir/Warnings`"
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if test -n "$killpid"
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then
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echo "ps -fp $killpid" >> $resdir/Warnings 2>&1
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ps -fp $killpid >> $resdir/Warnings 2>&1
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fi
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else
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echo ' ---' `date`: "Kernel done"
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fi
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break
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fi
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done
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if test -z "$qemu_pid" -a -s "$resdir/qemu_pid"
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then
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qemu_pid=`cat "$resdir/qemu_pid"`
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fi
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if test $commandcompleted -eq 0 -a -n "$qemu_pid"
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then
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echo Grace period for qemu job at pid $qemu_pid
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oldline="`tail $resdir/console.log`"
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while :
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do
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kruntime=`awk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
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if kill -0 $qemu_pid > /dev/null 2>&1
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then
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:
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else
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break
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fi
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must_continue=no
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newline="`tail $resdir/console.log`"
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if test "$newline" != "$oldline" && echo $newline | grep -q ' [0-9]\+us : '
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then
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must_continue=yes
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fi
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last_ts="`tail $resdir/console.log | grep '^\[ *[0-9]\+\.[0-9]\+]' | tail -1 | sed -e 's/^\[ *//' -e 's/\..*$//'`"
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if test -z "last_ts"
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then
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last_ts=0
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fi
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if test "$newline" != "$oldline" -a "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE))
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then
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must_continue=yes
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fi
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if test $must_continue = no -a $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))
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then
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echo "!!! PID $qemu_pid hung at $kruntime vs. $seconds seconds" >> $resdir/Warnings 2>&1
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kill -KILL $qemu_pid
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break
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fi
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oldline=$newline
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sleep 10
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done
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elif test -z "$qemu_pid"
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then
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echo Unknown PID, cannot kill qemu command
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fi
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parse-console.sh $resdir/console.log $title
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