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authorSteven Rostedt <rostedt@goodmis.org>2012-10-05 16:52:50 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-08 07:55:25 +0900
commit80b810b276cf89587cdaa103e39027813b1be46c (patch)
tree54d6d0dace0bf0629dbfce1aec9f1b6b1f285272 /README
parentd8dc91b753b881c60c766c06aeec87675a07df4a (diff)
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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@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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diff --git a/README b/README
index 9beaed0..f32710a 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.