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="`mktemp -d ${TMPDIR-/tmp}/kvm-test-1-run-batch.sh.XXXXXX`"
  17 trap 'rm -rf $T' 0
  18
  19 echo ---- Running batch $*
  20 # Check arguments
  21 runfiles=
  22 for i in "$@"
  23 do
  24         if ! echo $i | grep -q '^[^/.a-z]\+\(\.[0-9]\+\)\?$'
  25         then
  26                 echo Bad scenario name: \"$i\" 1>&2
  27                 exit 1
  28         fi
  29         if ! test -d "$i"
  30         then
  31                 echo Scenario name not a directory: \"$i\" 1>&2
  32                 exit 2
  33         fi
  34         if ! test -f "$i/qemu-cmd"
  35         then
  36                 echo Scenario lacks a command file: \"$i/qemu-cmd\" 1>&2
  37                 exit 3
  38         fi
  39         rm -f $i/build.*
  40         touch $i/build.run
  41         runfiles="$runfiles $i/build.run"
  42 done
  43
  44 # Extract settings from the qemu-cmd file.
  45 grep '^#' $1/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
  46 . $T/qemu-cmd-settings
  47
  48 # Start up jitter, start each scenario, wait, end jitter.
  49 echo ---- System running test: `uname -a`
  50 echo ---- Starting kernels. `date` | tee -a log
  51 $TORTURE_JITTER_START
  52 kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
  53 for i in "$@"
  54 do
  55         echo ---- System running test: `uname -a` > $i/kvm-test-1-run-qemu.sh.out
  56         echo > $i/kvm-test-1-run-qemu.sh.out
  57         export TORTURE_AFFINITY=
  58         kvm-get-cpus-script.sh $T/cpuarray.awk $T/cpubatches.awk $T/cpustate
  59         if test -z "${TORTURE_NO_AFFINITY}"
  60         then
  61                 cat << '                ___EOF___' >> $T/cpubatches.awk
  62                 END {
  63                         affinitylist = "";
  64                         if (!gotcpus()) {
  65                                 print "echo No CPU-affinity information, so no taskset command.";
  66                         } else if (cpu_count !~ /^[0-9][0-9]*$/) {
  67                                 print "echo " scenario ": Bogus number of CPUs (old qemu-cmd?), so no taskset command.";
  68                         } else {
  69                                 affinitylist = nextcpus(cpu_count);
  70                                 if (!(affinitylist ~ /^[0-9,-][0-9,-]*$/))
  71                                         print "echo " scenario ": Bogus CPU-affinity information, so no taskset command.";
  72                                 else if (!dumpcpustate())
  73                                         print "echo " scenario ": Could not dump state, so no taskset command.";
  74                                 else
  75                                         print "export TORTURE_AFFINITY=" affinitylist;
  76                         }
  77                 }
  78                 ___EOF___
  79                 cpu_count="`grep '# TORTURE_CPU_COUNT=' $i/qemu-cmd | sed -e 's/^.*=//'`"
  80                 affinity_export="`awk -f $T/cpubatches.awk -v cpu_count="$cpu_count" -v scenario=$i < /dev/null`"
  81                 $affinity_export
  82         fi
  83         kvm-test-1-run-qemu.sh $i >> $i/kvm-test-1-run-qemu.sh.out 2>&1 &
  84 done
  85 for i in $runfiles
  86 do
  87         while ls $i > /dev/null 2>&1
  88         do
  89                 :
  90         done
  91 done
  92 echo ---- All kernel runs complete. `date` | tee -a log
  93 $TORTURE_JITTER_STOP