185 lines
5.3 KiB
Bash
185 lines
5.3 KiB
Bash
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Carry out a kvm-based run for the specified qemu-cmd file, which might
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# have been generated by --build-only kvm.sh run.
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#
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# Usage: kvm-test-1-run-qemu.sh qemu-cmd-dir
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#
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# qemu-cmd-dir provides the directory containing qemu-cmd file.
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# This is assumed to be of the form prefix/ds/scenario, where
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# "ds" is the top-level date-stamped directory and "scenario"
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# is the scenario name. Any required adjustments to this file
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# must have been made by the caller. The shell-command comments
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# at the end of the qemu-cmd file are not optional.
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#
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# Copyright (C) 2021 Facebook, Inc.
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#
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# Authors: Paul E. McKenney <paulmck@kernel.org>
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T="`mktemp -d ${TMPDIR-/tmp}/kvm-test-1-run-qemu.sh.XXXXXX`"
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trap 'rm -rf $T' 0
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resdir="$1"
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if ! test -d "$resdir"
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then
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echo $0: Nonexistent directory: $resdir
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exit 1
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fi
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if ! test -f "$resdir/qemu-cmd"
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then
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echo $0: Nonexistent qemu-cmd file: $resdir/qemu-cmd
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exit 1
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fi
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echo ' ---' `date`: Starting kernel, PID $$
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# Obtain settings from the qemu-cmd file.
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grep '^#' $resdir/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
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. $T/qemu-cmd-settings
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# Decorate qemu-cmd with affinity, redirection, backgrounding, and PID capture
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taskset_command=
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if test -n "$TORTURE_AFFINITY"
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then
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taskset_command="taskset -c $TORTURE_AFFINITY "
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fi
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sed -e 's/^[^#].*$/'"$taskset_command"'& 2>\&1 \&/' < $resdir/qemu-cmd > $T/qemu-cmd
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echo 'qemu_pid=$!' >> $T/qemu-cmd
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echo 'echo $qemu_pid > $resdir/qemu-pid' >> $T/qemu-cmd
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echo 'taskset -c -p $qemu_pid > $resdir/qemu-affinity' >> $T/qemu-cmd
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# In case qemu refuses to run...
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echo "NOTE: $QEMU either did not run or was interactive" > $resdir/console.log
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# Attempt to run qemu
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kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
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( . $T/qemu-cmd; wait `cat $resdir/qemu-pid`; echo $? > $resdir/qemu-retval ) &
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commandcompleted=0
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if test -z "$TORTURE_KCONFIG_GDB_ARG"
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then
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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 $qemu_pid `date`
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else
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qemu_pid=""
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echo Monitoring qemu job at yet-as-unknown pid `date`
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fi
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fi
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if test -n "$TORTURE_KCONFIG_GDB_ARG"
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then
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base_resdir=`echo $resdir | sed -e 's/\.[0-9]\+$//'`
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if ! test -f $base_resdir/vmlinux
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then
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base_resdir="`cat re-run`/$resdir"
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if ! test -f $base_resdir/vmlinux
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then
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base_resdir=/path/to
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fi
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fi
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echo Waiting for you to attach a debug session, for example: > /dev/tty
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echo " gdb $base_resdir/vmlinux" > /dev/tty
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echo 'After symbols load and the "(gdb)" prompt appears:' > /dev/tty
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echo " target remote :1234" > /dev/tty
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echo " continue" > /dev/tty
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kstarttime=`gawk 'BEGIN { print systime() }' < /dev/null`
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fi
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while :
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do
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if test -z "$qemu_pid" && test -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=`gawk 'BEGIN { print systime() - '"$kstarttime"' }' < /dev/null`
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if test -z "$qemu_pid" || kill -0 "$qemu_pid" > /dev/null 2>&1
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then
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if test -n "$TORTURE_KCONFIG_GDB_ARG"
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then
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:
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elif test $kruntime -ge $seconds || test -f "$resdir/../STOP.1"
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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" && test -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 $commandcompleted -eq 0 && test -n "$qemu_pid"
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then
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if ! test -f "$resdir/../STOP.1"
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then
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echo Grace period for qemu job at pid $qemu_pid `date`
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fi
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oldline="`tail $resdir/console.log`"
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while :
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do
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if test -f "$resdir/../STOP.1"
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then
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echo "PID $qemu_pid killed due to run STOP.1 request `date`" >> $resdir/Warnings 2>&1
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kill -KILL $qemu_pid
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break
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fi
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kruntime=`gawk 'BEGIN { print systime() - '"$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" && test "$last_ts" -lt $((seconds + $TORTURE_SHUTDOWN_GRACE)) && test "$last_ts" -gt "$TORTURE_SHUTDOWN_GRACE"
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then
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must_continue=yes
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if test $kruntime -ge $((seconds + $TORTURE_SHUTDOWN_GRACE))
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then
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echo Continuing at console.log time $last_ts \"`tail -n 1 $resdir/console.log`\" `date`
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fi
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fi
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if test $must_continue = no && test $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 `date`" >> $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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# Tell the script that this run is done.
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rm -f $resdir/build.run
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