scripts/kconfig/streamline_config.pl

2 # SPDX-License-Identifier: GPL-2.0
4 # Copyright 2005-2009 - Steven Rostedt
12 #   that turns on way too many modules than you need, and
13 #   you only want the modules you use, then this program
16 #   It gives you the ability to turn off all the modules that are
25 #  4. Have all your devices that you need modules for connected and
26 #      operational (make sure that their corresponding modules are loaded)
33 #  Now your kernel is ready to be built with only the modules that
38 #    cd /usr/src/linux-2.6.10
39 #    cp /boot/config-2.6.10-1-686-smp .config
54 sub dprint {
59 my $uname = `uname -r`;
72 	    "file" => "/boot/config-$uname",
76 	    "file" => "/boot/vmlinuz-$uname",
77 	    "exec" => "scripts/extract-ikconfig",
78 	    "test" => "scripts/extract-ikconfig",
82 	    "exec" => "scripts/extract-ikconfig",
83 	    "test" => "scripts/extract-ikconfig",
86 	    "file" => "/lib/modules/$uname/kernel/kernel/configs.ko",
87 	    "exec" => "scripts/extract-ikconfig",
88 	    "test" => "scripts/extract-ikconfig",
92 	    "exec" => "scripts/extract-ikconfig",
93 	    "test" => "scripts/extract-ikconfig",
97 	    "exec" => "scripts/extract-ikconfig",
98 	    "test" => "scripts/extract-ikconfig",
102 sub read_config {
104 	my $file = $conf->{"file"};
106 	next if ( ! -f "$file");
108 	if (defined($conf->{"test"})) {
109 	    `$conf->{"test"} $conf->{"file"} 2>/dev/null`;
113 	my $exec = $conf->{"exec"};
117 	open(my $infile, '-|', "$exec $file") || die "Failed to run $exec $file";
139 my @makefiles = `find $ksource -name Makefile -or -name Kbuild 2>/dev/null`;
154 sub read_kconfig {
249 	    $deps =~ s/^[^a-zA-Z0-9_]*//;
250 	    $deps =~ s/[^a-zA-Z0-9_]*$//;
252 	    my @deps = split /[^a-zA-Z0-9_]+/, $deps;
258 	    $iflevel-- if ($iflevel);
261 	} elsif (/^\s*(---)?help(---)?\s*$/ || /^(comment|choice|menu)\b/) {
273 sub convert_vars {
319 	# collect objects after obj-$(CONFIG_FOO_BAR)
320 	if (/obj-\$[({](CONFIG_[^})]*)[)}]\s*[+:]?=\s*(.*)/) {
330 		$obj =~ s/-/_/g;
352 my %modules;
356     if ( ! -f $lsmod_file) {
357 	if ( -f $ENV{'objtree'}."/".$lsmod_file) {
364     my $otype = ( -x $lsmod_file) ? '-|' : '<';
369     # see what modules are loaded on this system
373 	if ( -x "$dir/lsmod" ) {
383     open($linfile, '-|', $lsmod) || die "Can not call lsmod with $lsmod";
389 		$modules{$1} = 1;
395 # a loaded module. This is a direct obj-${CONFIG_FOO} += bar.o
398 foreach my $module (keys(%modules)) {
424 my $valid = "A-Za-z_0-9";
446 sub parse_config_depends
485 sub parse_config_selects
542 sub loop_depend {
573 sub loop_select {
601 sub in_preserved_kconfigs {
641 	} elsif ($orig_cert ne $default_cert && ! -f $orig_cert) {
655 	if (! -f $orig_keys) {
687 # Integrity check, make sure all modules that we want enabled do
690 foreach my $module (keys(%modules)) {