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 cat << ' ___EOF___' >> $T/cpubatches.awk
60 END {
61 affinitylist = "";
62 if (!gotcpus()) {
63 print "echo No CPU-affinity information, so no taskset command.";
64 } else if (cpu_count !~ /^[0-9][0-9]*$/) {
65 print "echo " scenario ": Bogus number of CPUs (old qemu-cmd?), so no taskset command.";
66 } else {
67 affinitylist = nextcpus(cpu_count);
68 if (!(affinitylist ~ /^[0-9,-][0-9,-]*$/))
69 print "echo " scenario ": Bogus CPU-affinity information, so no taskset command.";
70 else if (!dumpcpustate())
71 print "echo " scenario ": Could not dump state, so no taskset command.";
72 else
73 print "export TORTURE_AFFINITY=" affinitylist;
74 }
75 }
76 ___EOF___
77 cpu_count="`grep '# TORTURE_CPU_COUNT=' $i/qemu-cmd | sed -e 's/^.*=//'`"
78 affinity_export="`awk -f $T/cpubatches.awk -v cpu_count="$cpu_count" -v scenario=$i < /dev/null`"
79 $affinity_export
80 kvm-test-1-run-qemu.sh $i >> $i/kvm-test-1-run-qemu.sh.out 2>&1 &
81 done
82 for i in $runfiles
83 do
84 while ls $i > /dev/null 2>&1
85 do
86 :
87 done
88 done
89 echo ---- All kernel runs complete. `date` | tee -a log
90 $TORTURE_JITTER_STOP
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