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    Subject[PATCH]-2.4.23 switches to kbuild
    hi,

    Added random configurations options for stress testing.

    This patch was done by Ghozlane Toumi <gtoumi@messel.emse.fr>
    and documented by Keith Owens <kaos@ocs.com.au> on October 7 2000.

    Very useful with OSDL compregress.sh[1] for stress testing
    of kernel constructions.


    [1] http://developer.osdl.org/~cherry/compile/

    -thanks-
    --
    Software is like sex, it's better when it's bug free.

    --- linux/Documentation/kbuild/00-INDEX 2000-09-17 18:45:06.000000000 +0200
    +++ n/Documentation/kbuild/00-INDEX 2003-11-28 17:12:55.000000000 +0100
    @@ -8,3 +8,5 @@
    - specification of Config Language, the language in Config.in files
    makefiles.txt
    - developer information for linux kernel makefiles
    +random.txt
    + - automatically generate random configurations for stress testing
    --- linux/Documentation/kbuild/random.txt 2003-11-28 17:24:10.000000000 +0100
    +++ n/Documentation/kbuild/random.txt 2003-11-28 17:12:55.000000000 +0100
    @@ -0,0 +1,47 @@
    +Code by Ghozlane Toumi <gtoumi@messel.emse.fr>, documentation by
    +Keith Owens <kaos@ocs.com.au>
    +
    +In addition to the normal config targets you can make
    +
    + randconfig random configuration.
    +
    + allyesconfig reply 'y' to all options, maximal kernel.
    +
    + allnoconfig reply 'n' to all options, minimal kernel.
    +
    + allmodconfig build everything as modules where possible.
    +
    +
    +All random configurations will satisfy the config rules, that is, all
    +configurations should be valid. Any build errors indicate bugs in the
    +config dependency rules or in the Makefiles.
    +
    +You can constrain the random configuration, e.g. you may want to force
    +the use of modules or the absence of /proc or cramfs must be a module.
    +If file .force_default exists then it is read to preset selected
    +values, all other values will be randomly selected, subject to the
    +config rules. The syntax of .force_default is:
    +
    +CONFIG_foo=value
    + Force this value, for example CONFIG_MODULES=y, CONFIG_PROC_FS=n,
    + CONFIG_RAMFS=m.
    +
    +# CONFIG_foo is not set
    + Equivalent to CONFIG_foo=n, supported because this is the format used
    + in .config. NOTE: The leading '#' is required.
    +
    +# list CONFIG_foo val1,val2,val3
    + Pick a value for CONFIG_foo from the list. CONFIG_foo must be an int
    + or hex option. NOTE: The leading '#' is required.
    +
    +# range CONFIG_foo min max
    + Pick a value for CONFIG_foo in the range min <=> max. CONFIG_foo
    + must be an int option. NOTE: The leading '#' is required.
    +
    +If you have repeated settings of the same option in .force_default then
    +values take precedence over lists which take precedence over range.
    +Within each group the last setting for an option is used.
    +
    +Answers "randomised" are bool(), tristate(), dep_tristate() and
    +choice(). Unless specified in .force_default, int, hex, and string
    +options use the default values from config.in.
    --- linux/Makefile 2003-11-26 01:34:08.000000000 +0100
    +++ n/Makefile 2003-11-28 17:20:52.000000000 +0100
    @@ -316,6 +316,22 @@
    config: symlinks
    $(CONFIG_SHELL) scripts/Configure arch/$(ARCH)/config.in

    +defconfig: symlinks
    + @rm -f .config
    + yes '' | $(CONFIG_SHELL) scripts/Configure arch/$(ARCH)/config.in
    +
    +randconfig: symlinks
    + $(CONFIG_SHELL) scripts/Configure -r arch/$(ARCH)/config.in
    +
    +allyesconfig: symlinks
    + $(CONFIG_SHELL) scripts/Configure -y arch/$(ARCH)/config.in
    +
    +allnoconfig: symlinks
    + $(CONFIG_SHELL) scripts/Configure -n arch/$(ARCH)/config.in
    +
    +allmodconfig: symlinks
    + $(CONFIG_SHELL) scripts/Configure -m arch/$(ARCH)/config.in
    +
    include/config/MARKER: scripts/split-include include/linux/autoconf.h
    scripts/split-include include/linux/autoconf.h include/config
    @ touch include/config/MARKER
    --- linux/scripts/Configure 2003-06-15 03:29:22.000000000 +0200
    +++ n/scripts/Configure 2003-11-28 17:12:55.000000000 +0100
    @@ -48,6 +48,10 @@
    #
    # 24 January 1999, Michael Elizabeth Chastain, <mec@shout.net>
    # - Improve the exit message (Jeff Ronne).
    +#
    +# 7 October 2000, Ghozlane Toumi, <gtoumi@messel.emse.fr>
    +# added switches for "random" , "all yes" and "all modules"
    +#

    #
    # Make sure we're really running bash.
    @@ -76,6 +80,43 @@
    }

    #
    +# returns a random number between 1 and $1
    +#
    +function rnd () {
    + rnd=$[ $RANDOM % $1 + 1 ]
    +}
    +
    +#
    +# randomly chose a number in a config list (LIST_CONFIG_NAME)
    +# or in a range ( MIN_CONFIG_NAME MAX_CONFIG_NAME )
    +# ONLY if there is no forced default (and we are in an "auto" mode)
    +# we are limited by the range of values taken by "$RANDOM"
    +#
    +# rndval CONFIG_NAME
    +#
    +
    +function rndval () {
    + [ "$AUTO" != "yes" -o -n "$old" ] && return
    + def_list=$(eval echo "\${LIST_$1}")
    + def_min=$(eval echo "\${MIN_$1}")
    + def_max=$(eval echo "\${MAX_$1}")
    +
    + if [ -n "$def_list" ]; then
    + set -- $(echo $def_list | sed 's/,/ /g')
    + rnd $#
    + while [ $rnd -le $# ] ; do
    + def=$1
    + shift
    + done
    + return
    + fi
    + if [ -n "$def_min" -a -n "$def_max" ]; then
    + rnd $[ $def_max - $def_min ]
    + def=$[ $def_min + $rnd ]
    + fi
    +}
    +
    +#
    # help prints the corresponding help text from Configure.help to stdout
    #
    # help variable
    @@ -116,7 +157,11 @@
    # readln prompt default oldval
    #
    function readln () {
    - if [ "$DEFAULT" = "-d" -a -n "$3" ]; then
    + if [ "$AUTO" = "yes" ]; then
    + echo -n "$1"
    + ans=$2
    + echo $ans
    + elif [ "$DEFAULT" = "-d" -a -n "$3" ]; then
    echo "$1"
    ans=$2
    else
    @@ -176,6 +221,17 @@
    function bool () {
    old=$(eval echo "\${$2}")
    def=${old:-'n'}
    + if [ "$AUTO" = "yes" -a -z "$old" ]; then
    + if [ "$RND" = "-r" ]; then
    + rnd 2
    + case $rnd in
    + "1") def="y" ;;
    + "2") def="n" ;;
    + esac
    + else
    + def=$DEF_ANS;
    + fi
    + fi
    case "$def" in
    "y" | "m") defprompt="Y/n/?"
    def="y"
    @@ -207,6 +263,18 @@
    else
    old=$(eval echo "\${$2}")
    def=${old:-'n'}
    + if [ "$AUTO" = "yes" -a -z "$old" ]; then
    + if [ "$RND" = "-r" ]; then
    + rnd 3
    + case $rnd in
    + "1") def="y" ;;
    + "2") def="n" ;;
    + "3") def="m" ;;
    + esac
    + else
    + def=$DEF_ANS
    + fi
    + fi
    case "$def" in
    "y") defprompt="Y/m/n/?"
    ;;
    @@ -263,6 +331,17 @@

    if [ $need_module = 1 ]; then
    if [ "$CONFIG_MODULES" = "y" ]; then
    + if [ "$AUTO" = "yes" -a -z "$old" ]; then
    + if [ "$RND" = "-r" ]; then
    + rnd 2
    + case $rnd in
    + "1") def="m" ;;
    + "2") def="n" ;;
    + esac
    + else
    + def=$DEF_ANS
    + fi
    + fi
    case "$def" in
    "y" | "m") defprompt="M/n/?"
    def="m"
    @@ -348,6 +427,7 @@
    function int () {
    old=$(eval echo "\${$2}")
    def=${old:-$3}
    + rndval $2
    while :; do
    readln "$1 ($2) [$def] " "$def" "$old"
    if expr "$ans" : '[0-9]*$' > /dev/null; then
    @@ -379,6 +459,7 @@
    old=$(eval echo "\${$2}")
    def=${old:-$3}
    def=${def#*[x,X]}
    + rndval $2
    while :; do
    readln "$1 ($2) [$def] " "$def" "$old"
    ans=${ans#*[x,X]}
    @@ -461,6 +542,15 @@
    shift; shift
    done

    + if [ "$RND" = "-r" -a -z "$old" ] ; then
    + set -- $choices
    + rnd $#
    + while [ $rnd -le $# ] ; do
    + def=$1
    + shift ; shift
    + done
    + fi
    +
    val=""
    while [ -z "$val" ]; do
    ambg=n
    @@ -509,6 +599,7 @@

    CONFIG=.tmpconfig
    CONFIG_H=.tmpconfig.h
    +FORCE_DEFAULT=.force_default
    trap "rm -f $CONFIG $CONFIG_H ; exit 1" 1 2

    #
    @@ -529,6 +620,16 @@
    shift
    fi

    +RND=""
    +DEF_ANS=""
    +AUTO=""
    +case "$1" in
    + -r) RND="-r" ; AUTO="yes" ; shift ;;
    + -y) DEF_ANS="y" ; AUTO="yes" ; shift ;;
    + -m) DEF_ANS="m" ; AUTO="yes" ; shift ;;
    + -n) DEF_ANS="n" ; AUTO="yes" ; shift ;;
    +esac
    +
    CONFIG_IN=./config.in
    if [ "$1" != "" ] ; then
    CONFIG_IN=$1
    @@ -539,18 +640,37 @@
    DEFAULTS=.config
    fi

    -if [ -f $DEFAULTS ]; then
    - echo "#"
    - echo "# Using defaults found in" $DEFAULTS
    - echo "#"
    - . $DEFAULTS
    - sed -e 's/# \(CONFIG_[^ ]*\) is not.*/\1=n/' <$DEFAULTS >.config-is-not.$$
    - . .config-is-not.$$
    - rm .config-is-not.$$
    +if [ "$AUTO" != "yes" ]; then
    + if [ -f $DEFAULTS ]; then
    + echo "#"
    + echo "# Using defaults found in" $DEFAULTS
    + echo "#"
    + . $DEFAULTS
    + sed -e 's/# \(CONFIG_[^ ]*\) is not.*/\1=n/' <$DEFAULTS >.config-is-not.$$
    + . .config-is-not.$$
    + rm .config-is-not.$$
    + else
    + echo "#"
    + echo "# No defaults found"
    + echo "#"
    + fi
    else
    - echo "#"
    - echo "# No defaults found"
    - echo "#"
    + if [ -f $FORCE_DEFAULT ]; then
    + echo "#"
    + echo "# Forcing defaults found in $FORCE_DEFAULT"
    + echo "#"
    + sed -e '
    +s/# \(CONFIG_[^ ]*\) is not.*/\1=n/;
    +s/# range \(CONFIG_[^ ]*\) \([^ ][^ ]*\) \([^ ][^ ]*\)/MIN_\1=\2; MAX_\1=\3/;
    +s/# list \(CONFIG_[^ ]*\) \([^ ][^ ]*\)/LIST_\1=\2/
    +' <$FORCE_DEFAULT >.default_val.$$
    + . .default_val.$$
    + rm .default_val.$$
    + else
    + echo "#"
    + echo "# No defaults found"
    + echo "#"
    + fi
    fi

    . $CONFIG_IN
    \
     
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