linux-kernel - Re: [PATCH 3/7] kconfig: enable CONFIG_IKCONFIG from streamline

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Date:	Thu, 30 Apr 2009 22:51:32 +0100
From:	Alan Jenkins <sourcejedi.lkml@...glemail.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Theodore Tso <tytso@....edu>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	zippel@...ux-m68k.org, linux-kbuild@...r.kernel.org,
	Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH 3/7] kconfig: enable CONFIG_IKCONFIG from 
	streamline_config.pl

On 4/30/09, Steven Rostedt <rostedt@...dmis.org> wrote:
> From: Steven Rostedt <srostedt@...hat.com>
>
> Ingo Molnar suggested that the streamline_config.pl should enable
> CONFIG_IKCONFIG to keep the current config in the kernel.
> Then we can use scripts/extract-ikconfig to find the current
> modules.
>
> This patch changes streamline_config.pl to check if CONFIG_IKCONFIG
> is not set, and if it is not, it enables it to be a module.
>
> [ Impact: make current config options easier to find ]
>
> Reported-by: Ingo Molnar <mingo@...e.hu>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
> ---
>  scripts/kconfig/streamline_config.pl |   33
> +++++++++++++++++++++++----------
>  1 files changed, 23 insertions(+), 10 deletions(-)
>
> diff --git a/scripts/kconfig/streamline_config.pl
> b/scripts/kconfig/streamline_config.pl
> index caac952..2334641 100644
> --- a/scripts/kconfig/streamline_config.pl
> +++ b/scripts/kconfig/streamline_config.pl
> @@ -256,18 +256,31 @@ 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.*)=(m|y)/) {
> -		if (defined($configs{$1})) {
> -		    $setconfigs{$1} = $2;
> -		    print;
> -		} elsif ($2 eq "m") {
> -		    print "# $1 is not set\n";
> -		} else {
> -		    print;
> -		}
> +
> +    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 is not set\n";

I assume the second one should be CONFIG_IKCONFIG_PROC :-).

> +	} else {
> +	    print;
> +	}
> +	next;
> +    }
> +
> +    if (/^(CONFIG.*)=(m|y)/) {
> +	if (defined($configs{$1})) {
> +	    $setconfigs{$1} = $2;
> +	    print;
> +	} elsif ($2 eq "m") {
> +	    print "# $1 is not set\n";
>  	} else {
> -		print;
> +	    print;
>  	}

> +    } else {
> +	print;
> +    }


Maybe it would be cleaner make the two "if" blocks the same; i.e. do
this instead:

+	next;
+    }
+
+	print;


>  }
>  close(CIN);
>
--
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