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Subject[PATCH] kbuild: Add new test targets: allyes, allno, randconfig
Adds targets useful when doing test-compilation of a kernel.
allyes is useful to see how much of the 2.5 kernel that does not yet compile.
randconfig can be used in a random manner to test strange configuration, for example over a night.
The usage is documented in Documentation/kbuild/random.txt

Credits for this patch goes to Gohzlane Toumi and Keith Owens. I simply extracted it from kbuild-2.5.

Sam
--- random.txt.orig Thu Jan 1 01:00:00 1970
+++ random.txt Fri May 31 21:41:55 2002
@@ -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.
+
+ allyes reply 'y' to all options, maximal kernel.
+
+ allno reply 'n' to all options, minimal kernel.
+
+ allmod 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.
--- Configure.orig Fri May 31 22:04:36 2002
+++ Configure Fri May 31 21:41:55 2002
@@ -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 + $rnd ]
+ fi
+}
+
+#
# help prints the corresponding help text from Configure.help to stdout
#
# help variable
@@ -109,7 +150,11 @@
# readln prompt default oldval
#
function readln () {
- if [ "$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=$2
else
@@ -169,6 +214,17 @@
function bool () {
old=$(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 "$def" in
"y" | "m") defprompt="Y/n/?"
def="y"
@@ -200,6 +256,18 @@
else
old=$(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/?"
;;
@@ -256,6 +324,17 @@

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"
@@ -351,6 +430,7 @@
else
max=10000000 # !!
fi
+ rndval $2
while :; do
readln "$1 ($2) [$def] " "$def" "$old"
if expr \( \( $ans + 0 \) \>= $min \) \& \( $ans \<= $max \) >/dev/null 2>&1 ; then
@@ -382,6 +462,7 @@
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]}
@@ -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

#
@@ -532,34 +623,57 @@
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
fi

-DEFAULTS=.config
-if [ ! -f .config ]; then
- DEFAULTS=/etc/kernel-config
- if [ ! -f $DEFAULTS ]; then
- DEFAULTS=/boot/config-`uname -r`
- if [ ! -f $DEFAULTS ]; then
- DEFAULTS=arch/$ARCH/defconfig
- fi
+for DEFAULTS in .config /lib/modules/`uname -r`/.config /etc/kernel-config /boot/config-`uname -r` arch/$ARCH/defconfig
+do
+ [ -r $DEFAULTS ] && break
+done
+
+if [ "$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
-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.$$
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
--- Makefile.orig Fri May 31 21:39:25 2002
+++ Makefile Fri May 31 22:16:02 2002
@@ -206,6 +206,18 @@
config: symlinks
$(CONFIG_SHELL) scripts/Configure arch/$(ARCH)/config.in

+randconfig: symlinks
+ $(CONFIG_SHELL) scripts/Configure -r arch/$(ARCH)/config.in
+
+allyes: symlinks
+ $(CONFIG_SHELL) scripts/Configure -y arch/$(ARCH)/config.in
+
+allno: symlinks
+ $(CONFIG_SHELL) scripts/Configure -n arch/$(ARCH)/config.in
+
+allmod: symlinks
+ $(CONFIG_SHELL) scripts/Configure -m arch/$(ARCH)/config.in
+
# make asm->asm-$(ARCH) symlink

symlinks:
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