1#!/bin/bash 2# 3# Shell functions for the rest of the scripts. 4# 5# This program is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 2 of the License, or 8# (at your option) any later version. 9# 10# This program is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with this program; if not, you can access it online at 17# http://www.gnu.org/licenses/gpl-2.0.html. 18# 19# Copyright (C) IBM Corporation, 2013 20# 21# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com> 22 23# bootparam_hotplug_cpu bootparam-string 24# 25# Returns 1 if the specified boot-parameter string tells rcutorture to 26# test CPU-hotplug operations. 27bootparam_hotplug_cpu () { 28 echo "$1" | grep -q "rcutorture\.onoff_" 29} 30 31# checkarg --argname argtype $# arg mustmatch cannotmatch 32# 33# Checks the specified argument "arg" against the mustmatch and cannotmatch 34# patterns. 35checkarg () { 36 if test $3 -le 1 37 then 38 echo $1 needs argument $2 matching \"$5\" 39 usage 40 fi 41 if echo "$4" | grep -q -e "$5" 42 then 43 : 44 else 45 echo $1 $2 \"$4\" must match \"$5\" 46 usage 47 fi 48 if echo "$4" | grep -q -e "$6" 49 then 50 echo $1 $2 \"$4\" must not match \"$6\" 51 usage 52 fi 53} 54 55# configfrag_boot_params bootparam-string config-fragment-file 56# 57# Adds boot parameters from the .boot file, if any. 58configfrag_boot_params () { 59 if test -r "$2.boot" 60 then 61 echo $1 `grep -v '^#' "$2.boot" | tr '\012' ' '` 62 else 63 echo $1 64 fi 65} 66 67# configfrag_boot_cpus bootparam-string config-fragment-file config-cpus 68# 69# Decreases number of CPUs based on any maxcpus= boot parameters specified. 70configfrag_boot_cpus () { 71 local bootargs="`configfrag_boot_params "$1" "$2"`" 72 local maxcpus 73 if echo "${bootargs}" | grep -q 'maxcpus=[0-9]' 74 then 75 maxcpus="`echo "${bootargs}" | sed -e 's/^.*maxcpus=\([0-9]*\).*$/\1/'`" 76 if test "$3" -gt "$maxcpus" 77 then 78 echo $maxcpus 79 else 80 echo $3 81 fi 82 else 83 echo $3 84 fi 85} 86 87# configfrag_hotplug_cpu config-fragment-file 88# 89# Returns 1 if the config fragment specifies hotplug CPU. 90configfrag_hotplug_cpu () { 91 if test ! -r "$1" 92 then 93 echo Unreadable config fragment "$1" 1>&2 94 exit -1 95 fi 96 grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1" 97} 98 99# identify_boot_image qemu-cmd 100# 101# Returns the relative path to the kernel build image. This will be 102# arch/<arch>/boot/bzImage unless overridden with the TORTURE_BOOT_IMAGE 103# environment variable. 104identify_boot_image () { 105 if test -n "$TORTURE_BOOT_IMAGE" 106 then 107 echo $TORTURE_BOOT_IMAGE 108 else 109 case "$1" in 110 qemu-system-x86_64|qemu-system-i386) 111 echo arch/x86/boot/bzImage 112 ;; 113 qemu-system-ppc64) 114 echo arch/powerpc/boot/bzImage 115 ;; 116 *) 117 echo "" 118 ;; 119 esac 120 fi 121} 122 123# identify_qemu builddir 124# 125# Returns our best guess as to which qemu command is appropriate for 126# the kernel at hand. Override with the TORTURE_QEMU_CMD environment variable. 127identify_qemu () { 128 local u="`file "$1"`" 129 if test -n "$TORTURE_QEMU_CMD" 130 then 131 echo $TORTURE_QEMU_CMD 132 elif echo $u | grep -q x86-64 133 then 134 echo qemu-system-x86_64 135 elif echo $u | grep -q "Intel 80386" 136 then 137 echo qemu-system-i386 138 elif uname -a | grep -q ppc64 139 then 140 echo qemu-system-ppc64 141 else 142 echo Cannot figure out what qemu command to use! 1>&2 143 echo file $1 output: $u 144 # Usually this will be one of /usr/bin/qemu-system-* 145 # Use TORTURE_QEMU_CMD environment variable or appropriate 146 # argument to top-level script. 147 exit 1 148 fi 149} 150 151# identify_qemu_append qemu-cmd 152# 153# Output arguments for the qemu "-append" string based on CPU type 154# and the TORTURE_QEMU_INTERACTIVE environment variable. 155identify_qemu_append () { 156 case "$1" in 157 qemu-system-x86_64|qemu-system-i386) 158 echo noapic selinux=0 initcall_debug debug 159 ;; 160 esac 161 if test -n "$TORTURE_QEMU_INTERACTIVE" 162 then 163 echo root=/dev/sda 164 else 165 echo console=ttyS0 166 fi 167} 168 169# identify_qemu_args qemu-cmd serial-file 170# 171# Output arguments for qemu arguments based on the TORTURE_QEMU_MAC 172# and TORTURE_QEMU_INTERACTIVE environment variables. 173identify_qemu_args () { 174 case "$1" in 175 qemu-system-x86_64|qemu-system-i386) 176 ;; 177 qemu-system-ppc64) 178 echo -enable-kvm -M pseries -cpu POWER7 -nodefaults 179 echo -device spapr-vscsi 180 if test -n "$TORTURE_QEMU_INTERACTIVE" -a -n "$TORTURE_QEMU_MAC" 181 then 182 echo -device spapr-vlan,netdev=net0,mac=$TORTURE_QEMU_MAC 183 echo -netdev bridge,br=br0,id=net0 184 elif test -n "$TORTURE_QEMU_INTERACTIVE" 185 then 186 echo -net nic -net user 187 fi 188 ;; 189 esac 190 if test -n "$TORTURE_QEMU_INTERACTIVE" 191 then 192 echo -monitor stdio -serial pty -S 193 else 194 echo -serial file:$2 195 fi 196} 197 198# identify_qemu_vcpus 199# 200# Returns the number of virtual CPUs available to the aggregate of the 201# guest OSes. 202identify_qemu_vcpus () { 203 lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://' 204} 205 206# print_bug 207# 208# Prints "BUG: " in red followed by remaining arguments 209print_bug () { 210 printf '\033[031mBUG: \033[m' 211 echo $* 212} 213 214# print_warning 215# 216# Prints "WARNING: " in yellow followed by remaining arguments 217print_warning () { 218 printf '\033[033mWARNING: \033[m' 219 echo $* 220} 221 222# specify_qemu_cpus qemu-cmd qemu-args #cpus 223# 224# Appends a string containing "-smp XXX" to qemu-args, unless the incoming 225# qemu-args already contains "-smp". 226specify_qemu_cpus () { 227 local nt; 228 229 if echo $2 | grep -q -e -smp 230 then 231 echo $2 232 else 233 case "$1" in 234 qemu-system-x86_64|qemu-system-i386) 235 echo $2 -smp $3 236 ;; 237 qemu-system-ppc64) 238 nt="`lscpu | grep '^NUMA node0' | sed -e 's/^[^,]*,\([0-9]*\),.*$/\1/'`" 239 echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt 240 ;; 241 esac 242 fi 243} 244