linux-kernel - [PATCH] localmodconfig: Document localmodconfig in README

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Message-ID: <1349470370.6755.74.camel@gandalf.local.home>
Date:	Fri, 05 Oct 2012 16:52:50 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	LKML <linux-kernel@...r.kernel.org>, linux-kbuild@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] localmodconfig: Document localmodconfig in README

Someone (over a year ago :-p) asked me to document localmodconfig in the
README file in the source code. I thought it was a good idea but other
things were more important and I simply forgot about it. Well, I
stumbled on the email asking me about this and I'm sending it out now.

Signed-off-by: Steven "Mr. Procrastinator" Rostedt <rostedt@...dmis.org>

diff --git a/README b/README
index 9beaed0..4d80e18 100644
--- a/README
+++ b/README
@@ -206,6 +206,24 @@ CONFIGURING the kernel:
      "make randconfig"  Create a ./.config file by setting symbol
                         values to random values.
 
+     "make localmodconfig" Create a config based on current config and
+                           loaded modules (lsmod). Disables any module
+                           option that is not needed for the loaded modules.
+
+                           To create a localmodconfig for another machine,
+                           store the lsmod of that machine into a file
+                           and pass it in as a LSMOD parameter.
+
+                   target$ lsmod > /tmp/mylsmod
+                   target$ scp /tmp/mylsmod host:/tmp
+
+                   host$ make LSMOD=/tmp/mylsmod 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.
+
    You can find more information on using the Linux kernel config tools
    in Documentation/kbuild/kconfig.txt.
 


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