tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0+
   3 #
   4 # Carry out a kvm-based run for the specified batch of scenarios, which
   5 # might have been built by --build-only kvm.sh run.
   6 #
   7 # Usage: kvm-test-1-run-batch.sh SCENARIO [ SCENARIO ... ]
   8 #
   9 # Each SCENARIO is the name of a directory in the current directory
  10 #       containing a ready-to-run qemu-cmd file.
  11 #
  12 # Copyright (C) 2021 Facebook, Inc.
  13 #
  14 # Authors: Paul E. McKenney <paulmck@kernel.org>
  15
  16 T=${TMPDIR-/tmp}/kvm-test-1-run-batch.sh.$$
  17 trap 'rm -rf $T' 0
  18 mkdir $T
  19
  20 echo ---- Running batch $*
  21 # Check arguments
  22 runfiles=
  23 for i in "$@"
  24 do
  25         if ! echo $i | grep -q '^[^/.a-z]\+\(\.[0-9]\+\)\?$'
  26         then
  27                 echo Bad scenario name: \"$i\" 1>&2
  28                 exit 1
  29         fi
  30         if ! test -d "$i"
  31         then
  32                 echo Scenario name not a directory: \"$i\" 1>&2
  33                 exit 2
  34         fi
  35         if ! test -f "$i/qemu-cmd"
  36         then
  37                 echo Scenario lacks a command file: \"$i/qemu-cmd\" 1>&2
  38                 exit 3
  39         fi
  40         rm -f $i/build.*
  41         touch $i/build.run
  42         runfiles="$runfiles $i/build.run"
  43 done
  44
  45 # Extract settings from the qemu-cmd file.
  46 grep '^#' $1/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
  47 . $T/qemu-cmd-settings
  48
  49 # Start up jitter, start each scenario, wait, end jitter.
  50 echo ---- System running test: `uname -a`
  51 echo ---- Starting kernels. `date` | tee -a log
  52 $TORTURE_JITTER_START
  53 kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
  54 for i in "$@"
  55 do
  56         echo ---- System running test: `uname -a` > $i/kvm-test-1-run-qemu.sh.out
  57         echo > $i/kvm-test-1-run-qemu.sh.out
  58         export TORTURE_AFFINITY=
  59         kvm-get-cpus-script.sh $T/cpuarray.awk $T/cpubatches.awk $T/cpustate
  60         cat << '        ___EOF___' >> $T/cpubatches.awk
  61         END {
  62                 affinitylist = "";
  63                 if (!gotcpus()) {
  64                         print "echo No CPU-affinity information, so no taskset command.";
  65                 } else if (cpu_count !~ /^[0-9][0-9]*$/) {
  66                         print "echo " scenario ": Bogus number of CPUs (old qemu-cmd?), so no taskset command.";
  67                 } else {
  68                         affinitylist = nextcpus(cpu_count);
  69                         if (!(affinitylist ~ /^[0-9,-][0-9,-]*$/))
  70                                 print "echo " scenario ": Bogus CPU-affinity information, so no taskset command.";
  71                         else if (!dumpcpustate())
  72                                 print "echo " scenario ": Could not dump state, so no taskset command.";
  73                         else
  74                                 print "export TORTURE_AFFINITY=" affinitylist;
  75                 }
  76         }
  77         ___EOF___
  78         cpu_count="`grep '# TORTURE_CPU_COUNT=' $i/qemu-cmd | sed -e 's/^.*=//'`"
  79         affinity_export="`awk -f $T/cpubatches.awk -v cpu_count="$cpu_count" -v scenario=$i < /dev/null`"
  80         $affinity_export
  81         kvm-test-1-run-qemu.sh $i >> $i/kvm-test-1-run-qemu.sh.out 2>&1 &
  82 done
  83 for i in $runfiles
  84 do
  85         while ls $i > /dev/null 2>&1
  86         do
  87                 :
  88         done
  89 done
  90 echo ---- All kernel runs complete. `date` | tee -a log
  91 $TORTURE_JITTER_STOP