diff -urN linux-2.4.29-hf1/Documentation/kbuild/00-INDEX linux-2.4.29-hf1-kbuild/Documentation/kbuild/00-INDEX --- linux-2.4.29-hf1/Documentation/kbuild/00-INDEX Sat Dec 1 18:27:13 2001 +++ linux-2.4.29-hf1-kbuild/Documentation/kbuild/00-INDEX Sun Feb 6 23:41:20 2005 @@ -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 diff -urN linux-2.4.29-hf1/Documentation/kbuild/random.txt linux-2.4.29-hf1-kbuild/Documentation/kbuild/random.txt --- linux-2.4.29-hf1/Documentation/kbuild/random.txt Thu Jan 1 01:00:00 1970 +++ linux-2.4.29-hf1-kbuild/Documentation/kbuild/random.txt Sun Feb 6 23:41:20 2005 @@ -0,0 +1,47 @@ +Code by Ghozlane Toumi , documentation by +Keith Owens + +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. diff -urN linux-2.4.29-hf1/Makefile linux-2.4.29-hf1-kbuild/Makefile --- linux-2.4.29-hf1/Makefile Sat Feb 5 16:01:57 2005 +++ linux-2.4.29-hf1-kbuild/Makefile Sun Feb 6 23:41:20 2005 @@ -317,6 +317,22 @@ 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 diff -urN linux-2.4.29-hf1/scripts/Configure linux-2.4.29-hf1-kbuild/scripts/Configure --- linux-2.4.29-hf1/scripts/Configure Sat Feb 5 16:01:57 2005 +++ linux-2.4.29-hf1-kbuild/scripts/Configure Sun Feb 6 23:41:59 2005 @@ -48,6 +48,10 @@ # # 24 January 1999, Michael Elizabeth Chastain, # - Improve the exit message (Jeff Ronne). +# +# 7 October 2000, Ghozlane Toumi, +# 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 @@ -378,6 +458,7 @@ function hex () { old=$(eval echo "\${$2}") def=${old:-$3} + rndval $2 while :; do readln "$1 ($2) [$def] " "$def" "$old" if expr "$ans" : '0x[0-9a-fA-F][0-9a-fA-F]*$' > /dev/null; then @@ -464,6 +545,15 @@ 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 @@ -512,6 +602,7 @@ CONFIG=.tmpconfig CONFIG_H=.tmpconfig.h +FORCE_DEFAULT=.force_default trap "rm -f $CONFIG $CONFIG_H ; exit 1" 1 2 # @@ -532,6 +623,16 @@ 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 @@ -542,18 +643,37 @@ 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