linux-kernel - [PATCH] Re: How to disable configfs

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Message-ID: <4B8176CC.40506@oracle.com>
Date:	Sun, 21 Feb 2010 10:09:16 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
CC:	Joel Becker <joel.becker@...cle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] Re: How to disable configfs_example modules

On 02/21/10 07:18, Jaswinder Singh Rajput wrote:
> Hello Randy,

Hi Jaswinder,

> I am trying to build no modules but unfortunately I am getting 3 modules
> with http://userweb.kernel.org/~jaswinder/Corei7/config-i7-64.txt :
> 
>   INSTALL Documentation/filesystems/configfs/configfs_example_explicit.ko
>   INSTALL Documentation/filesystems/configfs/configfs_example_macros.ko
>   INSTALL drivers/scsi/scsi_wait_scan.ko
> 
> How can I get rid of configfs_example modules.
> 
> What is the magic in 'ifneq ($(CONFIG_CONFIGFS_FS),)' :

That just says: if CONFIG_CONFIGFS_FS neq empty_string
  [where the empty_string is between the ",)"]

> Documentation/filesystems/configfs/Makefile :
> ifneq ($(CONFIG_CONFIGFS_FS),)
> obj-m += configfs_example_explicit.o configfs_example_macros.o
> endif


I think that this patch will do it.  Please let me know if it
does not work.

---
From: Randy Dunlap <randy.dunlap@...cle.com>

Documentation/ source files that are kernel modules should
not be built when CONFIG_MODULES is not enabled, so change
the Makefile to enforce that.

Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
---
 Documentation/filesystems/configfs/Makefile |    2 ++
 1 file changed, 2 insertions(+)

--- lnx-2633-rc8.orig/Documentation/filesystems/configfs/Makefile
+++ lnx-2633-rc8/Documentation/filesystems/configfs/Makefile
@@ -1,3 +1,5 @@
+ifeq ($(CONFIG_MODULES),1)
 ifneq ($(CONFIG_CONFIGFS_FS),)
 obj-m += configfs_example_explicit.o configfs_example_macros.o
 endif
+endif
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