267 lines
6.4 KiB
Bash
267 lines
6.4 KiB
Bash
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#!/bin/bash
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#
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# Shell functions for the rest of the scripts.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, you can access it online at
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# http://www.gnu.org/licenses/gpl-2.0.html.
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#
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# Copyright (C) IBM Corporation, 2013
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#
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# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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# bootparam_hotplug_cpu bootparam-string
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#
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# Returns 1 if the specified boot-parameter string tells rcutorture to
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# test CPU-hotplug operations.
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bootparam_hotplug_cpu () {
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echo "$1" | grep -q "rcutorture\.onoff_"
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}
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# checkarg --argname argtype $# arg mustmatch cannotmatch
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#
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# Checks the specified argument "arg" against the mustmatch and cannotmatch
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# patterns.
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checkarg () {
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if test $3 -le 1
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then
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echo $1 needs argument $2 matching \"$5\"
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usage
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fi
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if echo "$4" | grep -q -e "$5"
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then
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:
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else
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echo $1 $2 \"$4\" must match \"$5\"
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usage
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fi
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if echo "$4" | grep -q -e "$6"
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then
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echo $1 $2 \"$4\" must not match \"$6\"
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usage
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fi
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}
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# configfrag_boot_params bootparam-string config-fragment-file
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#
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# Adds boot parameters from the .boot file, if any.
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configfrag_boot_params () {
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if test -r "$2.boot"
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then
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echo $1 `grep -v '^#' "$2.boot" | tr '\012' ' '`
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else
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echo $1
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fi
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}
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# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus
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#
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# Decreases number of CPUs based on any nr_cpus= boot parameters specified.
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configfrag_boot_cpus () {
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local bootargs="`configfrag_boot_params "$1" "$2"`"
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local nr_cpus
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if echo "${bootargs}" | grep -q 'nr_cpus=[0-9]'
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then
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nr_cpus="`echo "${bootargs}" | sed -e 's/^.*nr_cpus=\([0-9]*\).*$/\1/'`"
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if test "$3" -gt "$nr_cpus"
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then
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echo $nr_cpus
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else
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echo $3
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fi
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else
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echo $3
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fi
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}
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# configfrag_boot_maxcpus bootparam-string config-fragment-file config-cpus
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#
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# Decreases number of CPUs based on any maxcpus= boot parameters specified.
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# This allows tests where additional CPUs come online later during the
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# test run. However, the torture parameters will be set based on the
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# number of CPUs initially present, so the scripting should schedule
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# test runs based on the maxcpus= boot parameter controlling the initial
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# number of CPUs instead of on the ultimate number of CPUs.
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configfrag_boot_maxcpus () {
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local bootargs="`configfrag_boot_params "$1" "$2"`"
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local maxcpus
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if echo "${bootargs}" | grep -q 'maxcpus=[0-9]'
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then
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maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`"
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if test "$3" -gt "$maxcpus"
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then
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echo $maxcpus
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else
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echo $3
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fi
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else
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echo $3
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fi
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}
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# configfrag_hotplug_cpu config-fragment-file
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#
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# Returns 1 if the config fragment specifies hotplug CPU.
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configfrag_hotplug_cpu () {
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if test ! -r "$1"
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then
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echo Unreadable config fragment "$1" 1>&2
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exit -1
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fi
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grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1"
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}
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# identify_boot_image qemu-cmd
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#
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# Returns the relative path to the kernel build image. This will be
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# arch/<arch>/boot/bzImage or vmlinux if bzImage is not a target for the
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# architecture, unless overridden with the TORTURE_BOOT_IMAGE environment
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# variable.
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identify_boot_image () {
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if test -n "$TORTURE_BOOT_IMAGE"
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then
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echo $TORTURE_BOOT_IMAGE
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else
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case "$1" in
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qemu-system-x86_64|qemu-system-i386)
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echo arch/x86/boot/bzImage
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;;
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*)
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echo vmlinux
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;;
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esac
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fi
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}
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# identify_qemu builddir
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#
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# Returns our best guess as to which qemu command is appropriate for
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# the kernel at hand. Override with the TORTURE_QEMU_CMD environment variable.
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identify_qemu () {
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local u="`file "$1"`"
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if test -n "$TORTURE_QEMU_CMD"
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then
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echo $TORTURE_QEMU_CMD
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elif echo $u | grep -q x86-64
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then
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echo qemu-system-x86_64
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elif echo $u | grep -q "Intel 80386"
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then
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echo qemu-system-i386
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elif uname -a | grep -q ppc64
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then
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echo qemu-system-ppc64
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else
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echo Cannot figure out what qemu command to use! 1>&2
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echo file $1 output: $u
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# Usually this will be one of /usr/bin/qemu-system-*
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# Use TORTURE_QEMU_CMD environment variable or appropriate
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# argument to top-level script.
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exit 1
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fi
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}
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# identify_qemu_append qemu-cmd
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#
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# Output arguments for the qemu "-append" string based on CPU type
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# and the TORTURE_QEMU_INTERACTIVE environment variable.
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identify_qemu_append () {
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case "$1" in
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qemu-system-x86_64|qemu-system-i386)
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echo noapic selinux=0 initcall_debug debug
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;;
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esac
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if test -n "$TORTURE_QEMU_INTERACTIVE"
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then
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echo root=/dev/sda
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else
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echo console=ttyS0
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fi
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}
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# identify_qemu_args qemu-cmd serial-file
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#
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# Output arguments for qemu arguments based on the TORTURE_QEMU_MAC
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# and TORTURE_QEMU_INTERACTIVE environment variables.
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identify_qemu_args () {
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case "$1" in
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qemu-system-x86_64|qemu-system-i386)
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;;
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qemu-system-ppc64)
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echo -enable-kvm -M pseries -nodefaults
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echo -device spapr-vscsi
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if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC"
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then
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echo -device spapr-vlan,netdev=net0,mac=$TORTURE_QEMU_MAC
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echo -netdev bridge,br=br0,id=net0
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elif test -n "$TORTURE_QEMU_INTERACTIVE"
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then
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echo -net nic -net user
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fi
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;;
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esac
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if test -n "$TORTURE_QEMU_INTERACTIVE"
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then
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echo -monitor stdio -serial pty -S
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else
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echo -serial file:$2
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fi
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}
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# identify_qemu_vcpus
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#
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# Returns the number of virtual CPUs available to the aggregate of the
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# guest OSes.
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identify_qemu_vcpus () {
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lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://'
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}
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# print_bug
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#
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# Prints "BUG: " in red followed by remaining arguments
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print_bug () {
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printf '\033[031mBUG: \033[m'
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echo $*
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}
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# print_warning
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#
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# Prints "WARNING: " in yellow followed by remaining arguments
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print_warning () {
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printf '\033[033mWARNING: \033[m'
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echo $*
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}
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# specify_qemu_cpus qemu-cmd qemu-args #cpus
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#
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# Appends a string containing "-smp XXX" to qemu-args, unless the incoming
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# qemu-args already contains "-smp".
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specify_qemu_cpus () {
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local nt;
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if echo $2 | grep -q -e -smp
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then
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echo $2
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else
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case "$1" in
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qemu-system-x86_64|qemu-system-i386)
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echo $2 -smp $3
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;;
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qemu-system-ppc64)
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nt="`lscpu | grep '^NUMA node0' | sed -e 's/^[^,]*,\([0-9]*\),.*$/\1/'`"
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echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt
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;;
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esac
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fi
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}
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