xref: /linux/tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh (revision 7ae9fb1b7ecbb5d85d07857943f677fd1a559b18)
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
16T="`mktemp -d ${TMPDIR-/tmp}/kvm-test-1-run-batch.sh.XXXXXX`"
17trap 'rm -rf $T' 0
18
19echo ---- Running batch $*
20# Check arguments
21runfiles=
22for i in "$@"
23do
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"
42done
43
44# Extract settings from the qemu-cmd file.
45grep '^#' $1/qemu-cmd | sed -e 's/^# //' > $T/qemu-cmd-settings
46. $T/qemu-cmd-settings
47
48# Start up jitter, start each scenario, wait, end jitter.
49echo ---- System running test: `uname -a`
50echo ---- Starting kernels. `date` | tee -a log
51$TORTURE_JITTER_START
52kvm-assign-cpus.sh /sys/devices/system/node > $T/cpuarray.awk
53for i in "$@"
54do
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 &
81done
82for i in $runfiles
83do
84	while ls $i > /dev/null 2>&1
85	do
86		:
87	done
88done
89echo ---- All kernel runs complete. `date` | tee -a log
90$TORTURE_JITTER_STOP
91