Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig: kconfig: add missing dependency of conf to localyesconfig kconfig: test if a .config already exists kconfig: make local .config default for streamline_config kconfig: test for /boot/config-uname after /proc/config.gz in localconfig kconfig: unset IKCONFIG_PROC and clean up nesting kconfig: search for a config to base the local(mod|yes)config on kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set kconfig: have extract-ikconfig read ELF files kconfig: add check if end exists in extract-ikconfig kconfig: enable CONFIG_IKCONFIG from streamline_config.pl kconfig: do not warn about modules built in kconfig: streamline_config.pl do not stop with no depends kconfig: add make localyesconfig option kconfig: make localmodconfig to run streamline_config.pl kconfig: add streamline_config.pl to scripts
This commit is contained in:
Linus Torvalds
commit
c91d7d54ea
4 changed files with 414 additions and 2 deletions
|
|
@ -117,7 +117,7 @@ $(obj)/config_data.gz: .config FORCE
|
|||
$(call if_changed,gzip)
|
||||
|
||||
quiet_cmd_ikconfiggz = IKCFG $@
|
||||
cmd_ikconfiggz = (echo "static const char kernel_config_data[] = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@
|
||||
cmd_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@
|
||||
targets += config_data.h
|
||||
$(obj)/config_data.h: $(obj)/config_data.gz FORCE
|
||||
$(call if_changed,ikconfiggz)
|
||||
|
|
|
|||
|
|
@ -17,6 +17,10 @@ dump_config() {
|
|||
return
|
||||
fi
|
||||
end=`$binoffset $file $IKCFG_ED 2>/dev/null`
|
||||
[ "$?" != "0" ] && end="-1"
|
||||
if [ "$end" -eq "-1" ]; then
|
||||
return
|
||||
fi
|
||||
|
||||
start=`expr $start + 8`
|
||||
size=`expr $end - $start`
|
||||
|
|
@ -55,6 +59,8 @@ dump_config "$image"
|
|||
GZHDR1="0x1f 0x8b 0x08 0x00"
|
||||
GZHDR2="0x1f 0x8b 0x08 0x08"
|
||||
|
||||
ELFHDR="0x7f 0x45 0x4c 0x46"
|
||||
|
||||
# vmlinux.gz: Check for a compressed images
|
||||
off=`$binoffset "$image" $GZHDR1 2>/dev/null`
|
||||
[ "$?" != "0" ] && off="-1"
|
||||
|
|
@ -69,6 +75,14 @@ elif [ "$off" -ne "-1" ]; then
|
|||
(dd ibs="$off" skip=1 count=0 && dd bs=512k) <"$image" 2>/dev/null | \
|
||||
zcat >"$TMPFILE"
|
||||
dump_config "$TMPFILE"
|
||||
|
||||
# check if this is simply an ELF file
|
||||
else
|
||||
off=`$binoffset "$image" $ELFHDR 2>/dev/null`
|
||||
[ "$?" != "0" ] && off="-1"
|
||||
if [ "$off" -eq "0" ]; then
|
||||
dump_config "$image"
|
||||
fi
|
||||
fi
|
||||
|
||||
echo "ERROR: Unable to extract kernel configuration information."
|
||||
|
|
|
|||
|
|
@ -2,7 +2,8 @@
|
|||
# Kernel configuration targets
|
||||
# These targets are used from top-level makefile
|
||||
|
||||
PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
|
||||
PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config \
|
||||
localmodconfig localyesconfig
|
||||
|
||||
ifdef KBUILD_KCONFIG
|
||||
Kconfig := $(KBUILD_KCONFIG)
|
||||
|
|
@ -28,6 +29,35 @@ oldconfig: $(obj)/conf
|
|||
silentoldconfig: $(obj)/conf
|
||||
$< -s $(Kconfig)
|
||||
|
||||
localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
|
||||
$(Q)perl $< $(Kconfig) > .tmp.config
|
||||
$(Q)if [ -f .config ]; then \
|
||||
cmp -s .tmp.config .config || \
|
||||
(mv -f .config .config.old.1; \
|
||||
mv -f .tmp.config .config; \
|
||||
$(obj)/conf -s $(Kconfig); \
|
||||
mv -f .config.old.1 .config.old) \
|
||||
else \
|
||||
mv -f .tmp.config .config; \
|
||||
$(obj)/conf -s $(Kconfig); \
|
||||
fi
|
||||
$(Q)rm -f .tmp.config
|
||||
|
||||
localyesconfig: $(obj)/streamline_config.pl $(obj)/conf
|
||||
$(Q)perl $< $(Kconfig) > .tmp.config
|
||||
$(Q)sed -i s/=m/=y/ .tmp.config
|
||||
$(Q)if [ -f .config ]; then \
|
||||
cmp -s .tmp.config .config || \
|
||||
(mv -f .config .config.old.1; \
|
||||
mv -f .tmp.config .config; \
|
||||
$(obj)/conf -s $(Kconfig); \
|
||||
mv -f .config.old.1 .config.old) \
|
||||
else \
|
||||
mv -f .tmp.config .config; \
|
||||
$(obj)/conf -s $(Kconfig); \
|
||||
fi
|
||||
$(Q)rm -f .tmp.config
|
||||
|
||||
# Create new linux.pot file
|
||||
# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
|
||||
# The symlink is used to repair a deficiency in arch/um
|
||||
|
|
@ -83,6 +113,8 @@ help:
|
|||
@echo ' xconfig - Update current config utilising a QT based front-end'
|
||||
@echo ' gconfig - Update current config utilising a GTK based front-end'
|
||||
@echo ' oldconfig - Update current config utilising a provided .config as base'
|
||||
@echo ' localmodconfig - Update current config disabling modules not loaded'
|
||||
@echo ' localyesconfig - Update current config converting local mods to core'
|
||||
@echo ' silentoldconfig - Same as oldconfig, but quietly, additionally update deps'
|
||||
@echo ' randconfig - New config with random answer to all options'
|
||||
@echo ' defconfig - New config with default answer to all options'
|
||||
|
|
|
|||
366
scripts/kconfig/streamline_config.pl
Normal file
366
scripts/kconfig/streamline_config.pl
Normal file
|
|
@ -0,0 +1,366 @@
|
|||
#!/usr/bin/perl -w
|
||||
#
|
||||
# Copywrite 2005-2009 - Steven Rostedt
|
||||
# Licensed under the terms of the GNU GPL License version 2
|
||||
#
|
||||
# It's simple enough to figure out how this works.
|
||||
# If not, then you can ask me at stripconfig@goodmis.org
|
||||
#
|
||||
# What it does?
|
||||
#
|
||||
# If you have installed a Linux kernel from a distribution
|
||||
# that turns on way too many modules than you need, and
|
||||
# you only want the modules you use, then this program
|
||||
# is perfect for you.
|
||||
#
|
||||
# It gives you the ability to turn off all the modules that are
|
||||
# not loaded on your system.
|
||||
#
|
||||
# Howto:
|
||||
#
|
||||
# 1. Boot up the kernel that you want to stream line the config on.
|
||||
# 2. Change directory to the directory holding the source of the
|
||||
# kernel that you just booted.
|
||||
# 3. Copy the configuraton file to this directory as .config
|
||||
# 4. Have all your devices that you need modules for connected and
|
||||
# operational (make sure that their corresponding modules are loaded)
|
||||
# 5. Run this script redirecting the output to some other file
|
||||
# like config_strip.
|
||||
# 6. Back up your old config (if you want too).
|
||||
# 7. copy the config_strip file to .config
|
||||
# 8. Run "make oldconfig"
|
||||
#
|
||||
# Now your kernel is ready to be built with only the modules that
|
||||
# are loaded.
|
||||
#
|
||||
# Here's what I did with my Debian distribution.
|
||||
#
|
||||
# cd /usr/src/linux-2.6.10
|
||||
# cp /boot/config-2.6.10-1-686-smp .config
|
||||
# ~/bin/streamline_config > config_strip
|
||||
# mv .config config_sav
|
||||
# mv config_strip .config
|
||||
# make oldconfig
|
||||
#
|
||||
my $config = ".config";
|
||||
my $linuxpath = ".";
|
||||
|
||||
my $uname = `uname -r`;
|
||||
chomp $uname;
|
||||
|
||||
my @searchconfigs = (
|
||||
{
|
||||
"file" => ".config",
|
||||
"exec" => "cat",
|
||||
},
|
||||
{
|
||||
"file" => "/proc/config.gz",
|
||||
"exec" => "zcat",
|
||||
},
|
||||
{
|
||||
"file" => "/boot/config-$uname",
|
||||
"exec" => "cat",
|
||||
},
|
||||
{
|
||||
"file" => "/boot/vmlinuz-$uname",
|
||||
"exec" => "scripts/extract-ikconfig",
|
||||
"test" => "scripts/extract-ikconfig",
|
||||
},
|
||||
{
|
||||
"file" => "vmlinux",
|
||||
"exec" => "scripts/extract-ikconfig",
|
||||
"test" => "scripts/extract-ikconfig",
|
||||
},
|
||||
{
|
||||
"file" => "/lib/modules/$uname/kernel/kernel/configs.ko",
|
||||
"exec" => "scripts/extract-ikconfig",
|
||||
"test" => "scripts/extract-ikconfig",
|
||||
},
|
||||
{
|
||||
"file" => "kernel/configs.ko",
|
||||
"exec" => "scripts/extract-ikconfig",
|
||||
"test" => "scripts/extract-ikconfig",
|
||||
},
|
||||
{
|
||||
"file" => "kernel/configs.o",
|
||||
"exec" => "scripts/extract-ikconfig",
|
||||
"test" => "scripts/extract-ikconfig",
|
||||
},
|
||||
);
|
||||
|
||||
sub find_config {
|
||||
foreach my $conf (@searchconfigs) {
|
||||
my $file = $conf->{"file"};
|
||||
|
||||
next if ( ! -f "$file");
|
||||
|
||||
if (defined($conf->{"test"})) {
|
||||
`$conf->{"test"} $conf->{"file"} 2>/dev/null`;
|
||||
next if ($?);
|
||||
}
|
||||
|
||||
my $exec = $conf->{"exec"};
|
||||
|
||||
print STDERR "using config: '$file'\n";
|
||||
|
||||
open(CIN, "$exec $file |") || die "Failed to run $exec $file";
|
||||
return;
|
||||
}
|
||||
die "No config file found";
|
||||
}
|
||||
|
||||
find_config;
|
||||
|
||||
my @makefiles = `find $linuxpath -name Makefile`;
|
||||
my %depends;
|
||||
my %selects;
|
||||
my %prompts;
|
||||
my %objects;
|
||||
my $var;
|
||||
my $cont = 0;
|
||||
|
||||
# Get the top level Kconfig file (passed in)
|
||||
my $kconfig = $ARGV[0];
|
||||
|
||||
# prevent recursion
|
||||
my %read_kconfigs;
|
||||
|
||||
sub read_kconfig {
|
||||
my ($kconfig) = @_;
|
||||
|
||||
my $state = "NONE";
|
||||
my $config;
|
||||
my @kconfigs;
|
||||
|
||||
open(KIN, $kconfig) || die "Can't open $kconfig";
|
||||
while (<KIN>) {
|
||||
chomp;
|
||||
|
||||
# collect any Kconfig sources
|
||||
if (/^source\s*"(.*)"/) {
|
||||
$kconfigs[$#kconfigs+1] = $1;
|
||||
}
|
||||
|
||||
# configs found
|
||||
if (/^\s*config\s+(\S+)\s*$/) {
|
||||
$state = "NEW";
|
||||
$config = $1;
|
||||
|
||||
# collect the depends for the config
|
||||
} elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
|
||||
$state = "DEP";
|
||||
$depends{$config} = $1;
|
||||
} elsif ($state eq "DEP" && /^\s*depends\s+on\s+(.*)$/) {
|
||||
$depends{$config} .= " " . $1;
|
||||
|
||||
# Get the configs that select this config
|
||||
} elsif ($state ne "NONE" && /^\s*select\s+(\S+)/) {
|
||||
if (defined($selects{$1})) {
|
||||
$selects{$1} .= " " . $config;
|
||||
} else {
|
||||
$selects{$1} = $config;
|
||||
}
|
||||
|
||||
# configs without prompts must be selected
|
||||
} elsif ($state ne "NONE" && /^\s*tristate\s\S/) {
|
||||
# note if the config has a prompt
|
||||
$prompt{$config} = 1;
|
||||
|
||||
# stop on "help"
|
||||
} elsif (/^\s*help\s*$/) {
|
||||
$state = "NONE";
|
||||
}
|
||||
}
|
||||
close(KIN);
|
||||
|
||||
# read in any configs that were found.
|
||||
foreach $kconfig (@kconfigs) {
|
||||
if (!defined($read_kconfigs{$kconfig})) {
|
||||
$read_kconfigs{$kconfig} = 1;
|
||||
read_kconfig($kconfig);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if ($kconfig) {
|
||||
read_kconfig($kconfig);
|
||||
}
|
||||
|
||||
# Read all Makefiles to map the configs to the objects
|
||||
foreach my $makefile (@makefiles) {
|
||||
chomp $makefile;
|
||||
|
||||
open(MIN,$makefile) || die "Can't open $makefile";
|
||||
while (<MIN>) {
|
||||
my $objs;
|
||||
|
||||
# is this a line after a line with a backslash?
|
||||
if ($cont && /(\S.*)$/) {
|
||||
$objs = $1;
|
||||
}
|
||||
$cont = 0;
|
||||
|
||||
# collect objects after obj-$(CONFIG_FOO_BAR)
|
||||
if (/obj-\$\((CONFIG_[^\)]*)\)\s*[+:]?=\s*(.*)/) {
|
||||
$var = $1;
|
||||
$objs = $2;
|
||||
}
|
||||
if (defined($objs)) {
|
||||
# test if the line ends with a backslash
|
||||
if ($objs =~ m,(.*)\\$,) {
|
||||
$objs = $1;
|
||||
$cont = 1;
|
||||
}
|
||||
|
||||
foreach my $obj (split /\s+/,$objs) {
|
||||
$obj =~ s/-/_/g;
|
||||
if ($obj =~ /(.*)\.o$/) {
|
||||
# Objects may bes enabled by more than one config.
|
||||
# Store configs in an array.
|
||||
my @arr;
|
||||
|
||||
if (defined($objects{$1})) {
|
||||
@arr = @{$objects{$1}};
|
||||
}
|
||||
|
||||
$arr[$#arr+1] = $var;
|
||||
|
||||
# The objects have a hash mapping to a reference
|
||||
# of an array of configs.
|
||||
$objects{$1} = \@arr;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
close(MIN);
|
||||
}
|
||||
|
||||
my %modules;
|
||||
|
||||
# see what modules are loaded on this system
|
||||
open(LIN,"/sbin/lsmod|") || die "Cant lsmod";
|
||||
while (<LIN>) {
|
||||
next if (/^Module/); # Skip the first line.
|
||||
if (/^(\S+)/) {
|
||||
$modules{$1} = 1;
|
||||
}
|
||||
}
|
||||
close (LIN);
|
||||
|
||||
# add to the configs hash all configs that are needed to enable
|
||||
# a loaded module.
|
||||
my %configs;
|
||||
foreach my $module (keys(%modules)) {
|
||||
if (defined($objects{$module})) {
|
||||
@arr = @{$objects{$module}};
|
||||
foreach my $conf (@arr) {
|
||||
$configs{$conf} = $module;
|
||||
}
|
||||
} else {
|
||||
# Most likely, someone has a custom (binary?) module loaded.
|
||||
print STDERR "$module config not found!!\n";
|
||||
}
|
||||
}
|
||||
|
||||
my $valid = "A-Za-z_0-9";
|
||||
my $repeat = 1;
|
||||
|
||||
#
|
||||
# Note, we do not care about operands (like: &&, ||, !) we want to add any
|
||||
# config that is in the depend list of another config. This script does
|
||||
# not enable configs that are not already enabled. If we come across a
|
||||
# config A that depends on !B, we can still add B to the list of depends
|
||||
# to keep on. If A was on in the original config, B would not have been
|
||||
# and B would not be turned on by this script.
|
||||
#
|
||||
sub parse_config_dep_select
|
||||
{
|
||||
my ($p) = @_;
|
||||
|
||||
while ($p =~ /[$valid]/) {
|
||||
|
||||
if ($p =~ /^[^$valid]*([$valid]+)/) {
|
||||
my $conf = "CONFIG_" . $1;
|
||||
|
||||
$p =~ s/^[^$valid]*[$valid]+//;
|
||||
|
||||
if (!defined($configs{$conf})) {
|
||||
# We must make sure that this config has its
|
||||
# dependencies met.
|
||||
$repeat = 1; # do again
|
||||
$configs{$conf} = 1;
|
||||
}
|
||||
} else {
|
||||
die "this should never happen";
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
while ($repeat) {
|
||||
$repeat = 0;
|
||||
|
||||
foreach my $config (keys %configs) {
|
||||
$config =~ s/^CONFIG_//;
|
||||
|
||||
if (defined($depends{$config})) {
|
||||
# This config has dependencies. Make sure they are also included
|
||||
parse_config_dep_select $depends{$config};
|
||||
}
|
||||
|
||||
if (defined($prompt{$config}) || !defined($selects{$config})) {
|
||||
next;
|
||||
}
|
||||
|
||||
# config has no prompt and must be selected.
|
||||
parse_config_dep_select $selects{$config};
|
||||
}
|
||||
}
|
||||
|
||||
my %setconfigs;
|
||||
|
||||
# Finally, read the .config file and turn off any module enabled that
|
||||
# we could not find a reason to keep enabled.
|
||||
while(<CIN>) {
|
||||
|
||||
if (/CONFIG_IKCONFIG/) {
|
||||
if (/# CONFIG_IKCONFIG is not set/) {
|
||||
# enable IKCONFIG at least as a module
|
||||
print "CONFIG_IKCONFIG=m\n";
|
||||
# don't ask about PROC
|
||||
print "# CONFIG_IKCONFIG_PROC is not set\n";
|
||||
} else {
|
||||
print;
|
||||
}
|
||||
next;
|
||||
}
|
||||
|
||||
if (/^(CONFIG.*)=(m|y)/) {
|
||||
if (defined($configs{$1})) {
|
||||
$setconfigs{$1} = $2;
|
||||
} elsif ($2 eq "m") {
|
||||
print "# $1 is not set\n";
|
||||
next;
|
||||
}
|
||||
}
|
||||
print;
|
||||
}
|
||||
close(CIN);
|
||||
|
||||
# Integrity check, make sure all modules that we want enabled do
|
||||
# indeed have their configs set.
|
||||
loop:
|
||||
foreach my $module (keys(%modules)) {
|
||||
if (defined($objects{$module})) {
|
||||
my @arr = @{$objects{$module}};
|
||||
foreach my $conf (@arr) {
|
||||
if (defined($setconfigs{$conf})) {
|
||||
next loop;
|
||||
}
|
||||
}
|
||||
print STDERR "module $module did not have configs";
|
||||
foreach my $conf (@arr) {
|
||||
print STDERR " " , $conf;
|
||||
}
|
||||
print STDERR "\n";
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue