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Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/functions.sh')
| -rw-r--r-- | tools/testing/selftests/rcutorture/bin/functions.sh | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh new file mode 100644 index 000000000..51f3464b9 --- /dev/null +++ b/tools/testing/selftests/rcutorture/bin/functions.sh @@ -0,0 +1,292 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0+ +# +# Shell functions for the rest of the scripts. +# +# Copyright (C) IBM Corporation, 2013 +# +# Authors: Paul E. McKenney <paulmck@linux.ibm.com> + +# bootparam_hotplug_cpu bootparam-string +# +# Returns 1 if the specified boot-parameter string tells rcutorture to +# test CPU-hotplug operations. +bootparam_hotplug_cpu () { + echo "$1" | grep -q "torture\.onoff_" +} + +# checkarg --argname argtype $# arg mustmatch cannotmatch +# +# Checks the specified argument "arg" against the mustmatch and cannotmatch +# patterns. +checkarg () { + if test $3 -le 1 + then + echo $1 needs argument $2 matching \"$5\" + usage + fi + if echo "$4" | grep -q -e "$5" + then + : + else + echo $1 $2 \"$4\" must match \"$5\" + usage + fi + if echo "$4" | grep -q -e "$6" + then + echo $1 $2 \"$4\" must not match \"$6\" + usage + fi +} + +# configfrag_boot_params bootparam-string config-fragment-file +# +# Adds boot parameters from the .boot file, if any. +configfrag_boot_params () { + if test -r "$2.boot" + then + echo $1 `grep -v '^#' "$2.boot" | tr '\012' ' '` + else + echo $1 + fi +} + +# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus +# +# Decreases number of CPUs based on any nr_cpus= boot parameters specified. +configfrag_boot_cpus () { + local bootargs="`configfrag_boot_params "$1" "$2"`" + local nr_cpus + if echo "${bootargs}" | grep -q 'nr_cpus=[0-9]' + then + nr_cpus="`echo "${bootargs}" | sed -e 's/^.*nr_cpus=\([0-9]*\).*$/\1/'`" + if test "$3" -gt "$nr_cpus" + then + echo $nr_cpus + else + echo $3 + fi + else + echo $3 + fi +} + +# configfrag_boot_maxcpus bootparam-string config-fragment-file config-cpus +# +# Decreases number of CPUs based on any maxcpus= boot parameters specified. +# This allows tests where additional CPUs come online later during the +# test run. However, the torture parameters will be set based on the +# number of CPUs initially present, so the scripting should schedule +# test runs based on the maxcpus= boot parameter controlling the initial +# number of CPUs instead of on the ultimate number of CPUs. +configfrag_boot_maxcpus () { + local bootargs="`configfrag_boot_params "$1" "$2"`" + local maxcpus + if echo "${bootargs}" | grep -q 'maxcpus=[0-9]' + then + maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`" + if test "$3" -gt "$maxcpus" + then + echo $maxcpus + else + echo $3 + fi + else + echo $3 + fi +} + +# configfrag_hotplug_cpu config-fragment-file +# +# Returns 1 if the config fragment specifies hotplug CPU. +configfrag_hotplug_cpu () { + if test ! -r "$1" + then + echo Unreadable config fragment "$1" 1>&2 + exit -1 + fi + grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1" +} + +# identify_boot_image qemu-cmd +# +# Returns the relative path to the kernel build image. This will be +# arch/<arch>/boot/bzImage or vmlinux if bzImage is not a target for the +# architecture, unless overridden with the TORTURE_BOOT_IMAGE environment +# variable. +identify_boot_image () { + if test -n "$TORTURE_BOOT_IMAGE" + then + echo $TORTURE_BOOT_IMAGE + else + case "$1" in + qemu-system-x86_64|qemu-system-i386) + echo arch/x86/boot/bzImage + ;; + qemu-system-aarch64) + echo arch/arm64/boot/Image + ;; + *) + echo vmlinux + ;; + esac + fi +} + +# identify_qemu builddir +# +# Returns our best guess as to which qemu command is appropriate for +# the kernel at hand. Override with the TORTURE_QEMU_CMD environment variable. +identify_qemu () { + local u="`file "$1"`" + if test -n "$TORTURE_QEMU_CMD" + then + echo $TORTURE_QEMU_CMD + elif echo $u | grep -q x86-64 + then + echo qemu-system-x86_64 + elif echo $u | grep -q "Intel 80386" + then + echo qemu-system-i386 + elif echo $u | grep -q aarch64 + then + echo qemu-system-aarch64 + elif uname -a | grep -q ppc64 + then + echo qemu-system-ppc64 + else + echo Cannot figure out what qemu command to use! 1>&2 + echo file $1 output: $u + # Usually this will be one of /usr/bin/qemu-system-* + # Use TORTURE_QEMU_CMD environment variable or appropriate + # argument to top-level script. + exit 1 + fi +} + +# identify_qemu_append qemu-cmd +# +# Output arguments for the qemu "-append" string based on CPU type +# and the TORTURE_QEMU_INTERACTIVE environment variable. +identify_qemu_append () { + local console=ttyS0 + case "$1" in + qemu-system-x86_64|qemu-system-i386) + echo selinux=0 initcall_debug debug + ;; + qemu-system-aarch64) + console=ttyAMA0 + ;; + esac + if test -n "$TORTURE_QEMU_INTERACTIVE" + then + echo root=/dev/sda + else + echo console=$console + fi +} + +# identify_qemu_args qemu-cmd serial-file +# +# Output arguments for qemu arguments based on the TORTURE_QEMU_MAC +# and TORTURE_QEMU_INTERACTIVE environment variables. +identify_qemu_args () { + local KVM_CPU="" + case "$1" in + qemu-system-x86_64) + KVM_CPU=kvm64 + ;; + qemu-system-i386) + KVM_CPU=kvm32 + ;; + esac + case "$1" in + qemu-system-x86_64|qemu-system-i386) + echo -machine q35,accel=kvm + echo -cpu ${KVM_CPU} + ;; + qemu-system-aarch64) + echo -machine virt,gic-version=host -cpu host + ;; + qemu-system-ppc64) + echo -enable-kvm -M pseries -nodefaults + echo -device spapr-vscsi + if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC" + then + echo -device spapr-vlan,netdev=net0,mac=$TORTURE_QEMU_MAC + echo -netdev bridge,br=br0,id=net0 + fi + ;; + esac + if test -n "$TORTURE_QEMU_INTERACTIVE" + then + echo -monitor stdio -serial pty -S + else + echo -serial file:$2 + fi +} + +# identify_qemu_vcpus +# +# Returns the number of virtual CPUs available to the aggregate of the +# guest OSes. +identify_qemu_vcpus () { + lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://' -e 's/[ ]*//g' +} + +# print_bug +# +# Prints "BUG: " in red followed by remaining arguments +print_bug () { + printf '\033[031mBUG: \033[m' + echo $* +} + +# print_warning +# +# Prints "WARNING: " in yellow followed by remaining arguments +print_warning () { + printf '\033[033mWARNING: \033[m' + echo $* +} + +# specify_qemu_cpus qemu-cmd qemu-args #cpus +# +# Appends a string containing "-smp XXX" to qemu-args, unless the incoming +# qemu-args already contains "-smp". +specify_qemu_cpus () { + local nt; + + if echo $2 | grep -q -e -smp + then + echo $2 + else + case "$1" in + qemu-system-x86_64|qemu-system-i386|qemu-system-aarch64) + echo $2 -smp $3 + ;; + qemu-system-ppc64) + nt="`lscpu | grep '^NUMA node0' | sed -e 's/^[^,]*,\([0-9]*\),.*$/\1/'`" + echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt + ;; + esac + fi +} + +# specify_qemu_net qemu-args +# +# Appends a string containing "-net none" to qemu-args, unless the incoming +# qemu-args already contains "-smp" or unless the TORTURE_QEMU_INTERACTIVE +# environment variable is set, in which case the string that is be added is +# instead "-net nic -net user". +specify_qemu_net () { + if echo $1 | grep -q -e -net + then + echo $1 + elif test -n "$TORTURE_QEMU_INTERACTIVE" + then + echo $1 -net nic -net user + else + echo $1 -net none + fi +} |