streamline_config.pl: add LMC_KEEP to preserve some kconfigs (c027b02d) · Commits · 戴 / test

Documentation/admin-guide/README.rst

+9 −2

Original line number	Diff line number	Diff line
		@@ -209,15 +209,22 @@ Configuring the kernel
		store the lsmod of that machine into a file
		and pass it in as a LSMOD parameter.

		Also, you can preserve modules in certain folders
		or kconfig files by specifying their paths in
		parameter LMC_KEEP.

		target$ lsmod > /tmp/mylsmod
		target$ scp /tmp/mylsmod host:/tmp

		host$ make LSMOD=/tmp/mylsmod localmodconfig
		host$ make LSMOD=/tmp/mylsmod \
		LMC_KEEP="drivers/usb:drivers/gpu:fs" \
		localmodconfig

		The above also works when cross compiling.

		"make localyesconfig" Similar to localmodconfig, except it will convert
		all module options to built in (=y) options.
		all module options to built in (=y) options. You can
		also preserve modules by LMC_KEEP.

		"make kvmconfig" Enable additional options for kvm guest kernel support.

+2 −0

Original line number	Diff line number	Diff line
		@@ -123,7 +123,9 @@ help:
		@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 ' except those preserved by LMC_KEEP environment variable'
		@echo ' localyesconfig - Update current config converting local mods to core'
		@echo ' except those preserved by LMC_KEEP environment variable'
		@echo ' defconfig - New config with default from ARCH supplied defconfig'
		@echo ' savedefconfig - Save current config as ./defconfig (minimal config)'
		@echo ' allnoconfig - New config where all options are answered with no'

+21 −0

Original line number	Diff line number	Diff line
		@@ -143,6 +143,7 @@ my %depends;
		my %selects;
		my %prompts;
		my %objects;
		my %config2kfile;
		my $var;
		my $iflevel = 0;
		my @ifdeps;
		@@ -201,6 +202,7 @@ sub read_kconfig {
		if (/^\s(menu)?config\s+(\S+)\s$/) {
		$state = "NEW";
		$config = $2;
		$config2kfile{"CONFIG_$config"} = $kconfig;

		# Add depends for 'if' nesting
		for (my $i = 0; $i < $iflevel; $i++) {
		@@ -591,6 +593,20 @@ while ($repeat) {
		}

		my %setconfigs;
		my @preserved_kconfigs = split(/:/,$ENV{LMC_KEEP});

		sub in_preserved_kconfigs {
		my $kconfig = $config2kfile{$_[0]};
		if (!defined($kconfig)) {
		return 0;
		}
		foreach my $excl (@preserved_kconfigs) {
		if($kconfig =~ /^$excl/) {
		return 1;
		}
		}
		return 0;
		}

		# Finally, read the .config file and turn off any module enabled that
		# we could not find a reason to keep enabled.
		@@ -644,6 +660,11 @@ foreach my $line (@config_file) {
		}

		if (/^(CONFIG.*)=(m\|y)/) {
		if (in_preserved_kconfigs($1)) {
		dprint "Preserve config $1";
		print;
		next;
		}
		if (defined($configs{$1})) {
		if ($localyesconfig) {
		$setconfigs{$1} = 'y';