3 # Shell functions for the rest of the scripts.
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.
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.
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.
19 # Copyright (C) IBM Corporation, 2013
21 # Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
23 # bootparam_hotplug_cpu bootparam-string
25 # Returns 1 if the specified boot-parameter string tells rcutorture to
26 # test CPU-hotplug operations.
27 bootparam_hotplug_cpu () {
28 echo "$1" | grep -q "rcutorture\.onoff_"
31 # checkarg --argname argtype $# arg mustmatch cannotmatch
33 # Checks the specified argument "arg" against the mustmatch and cannotmatch
38 echo $1 needs argument $2 matching \"$5\"
41 if echo "$4" | grep -q -e "$5"
45 echo $1 $2 \"$4\" must match \"$5\"
48 if echo "$4" | grep -q -e "$6"
50 echo $1 $2 \"$4\" must not match \"$6\"
55 # configfrag_boot_params bootparam-string config-fragment-file
57 # Adds boot parameters from the .boot file, if any.
58 configfrag_boot_params () {
61 echo $1 `grep -v '^#' "$2.boot" | tr '\012' ' '`
67 # configfrag_hotplug_cpu config-fragment-file
69 # Returns 1 if the config fragment specifies hotplug CPU.
70 configfrag_hotplug_cpu () {
73 echo Unreadable config fragment "$1" 1>&2
76 grep -q '^CONFIG_HOTPLUG_CPU=y$' "$1"
79 # identify_qemu builddir
81 # Returns our best guess as to which qemu command is appropriate for
82 # the kernel at hand. Override with the RCU_QEMU_CMD environment variable.
85 if test -n "$RCU_QEMU_CMD"
88 elif echo $u | grep -q x86-64
90 echo qemu-system-x86_64
91 elif echo $u | grep -q "Intel 80386"
94 elif uname -a | grep -q ppc64
96 echo qemu-system-ppc64
98 echo Cannot figure out what qemu command to use! 1>&2
99 echo file $1 output: $u
100 # Usually this will be one of /usr/bin/qemu-system-*
101 # Use RCU_QEMU_CMD environment variable or appropriate
102 # argument to top-level script.
107 # identify_qemu_append qemu-cmd
109 # Output arguments for the qemu "-append" string based on CPU type
110 # and the RCU_QEMU_INTERACTIVE environment variable.
111 identify_qemu_append () {
113 qemu-system-x86_64|qemu-system-i386)
114 echo noapic selinux=0 initcall_debug debug
117 if test -n "$RCU_QEMU_INTERACTIVE"
125 # identify_qemu_args qemu-cmd serial-file
127 # Output arguments for qemu arguments based on the RCU_QEMU_MAC
128 # and RCU_QEMU_INTERACTIVE environment variables.
129 identify_qemu_args () {
131 qemu-system-x86_64|qemu-system-i386)
134 echo -enable-kvm -M pseries -cpu POWER7 -nodefaults
135 echo -device spapr-vscsi
136 if test -n "$RCU_QEMU_INTERACTIVE" -a -n "$RCU_QEMU_MAC"
138 echo -device spapr-vlan,netdev=net0,mac=$RCU_QEMU_MAC
139 echo -netdev bridge,br=br0,id=net0
140 elif test -n "$RCU_QEMU_INTERACTIVE"
142 echo -net nic -net user
146 if test -n "$RCU_QEMU_INTERACTIVE"
148 echo -monitor stdio -serial pty -S
154 # identify_qemu_vcpus
156 # Returns the number of virtual CPUs available to the aggregate of the
158 identify_qemu_vcpus () {
159 lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://'
164 # Prints "BUG: " in red followed by remaining arguments
166 printf '\033[031mBUG: \033[m'
172 # Prints "WARNING: " in yellow followed by remaining arguments
174 printf '\033[033mWARNING: \033[m'
178 # specify_qemu_cpus qemu-cmd qemu-args #cpus
180 # Appends a string containing "-smp XXX" to qemu-args, unless the incoming
181 # qemu-args already contains "-smp".
182 specify_qemu_cpus () {
185 if echo $2 | grep -q -e -smp
190 qemu-system-x86_64|qemu-system-i386)
194 nt="`lscpu | grep '^NUMA node0' | sed -e 's/^[^,]*,\([0-9]*\),.*$/\1/'`"
195 echo $2 -smp cores=`expr \( $3 + $nt - 1 \) / $nt`,threads=$nt