From f7033929faab94a2b06a8a6a527b1bfcd9de0296 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Tue, 8 Sep 2009 07:25:20 +0000
Subject: [PATCH] add menuconfig option for enabling debugfs support in the
 kernel

SVN-Revision: 17540
---
 Config.in                  | 10 ++++++++++
 include/kernel-defaults.mk |  1 +
 2 files changed, 11 insertions(+)

diff --git a/Config.in b/Config.in
index 699c6894062..e03cf03af33 100644
--- a/Config.in
+++ b/Config.in
@@ -195,6 +195,7 @@ config KERNEL_KALLSYMS
 	default n
 	help
 		This will give you more information in stack traces from kernel oopses
+
 config KERNEL_PROFILING
 	bool "Compile the kernel with profiling enabled"
 	default n
@@ -202,6 +203,15 @@ config KERNEL_PROFILING
 		Enable the extended profiling support mechanisms used by profilers such
 		as OProfile.
 
+config KERNEL_DEBUG_FS
+	bool "Compile the kernel with Debug Filesystem enabled"
+	depends LINUX_2_6
+	default y
+	help
+		debugfs is a virtual file system that kernel developers use to put
+		debugging files into. Enable this option to be able to read and
+		write to these files.
+
 endmenu
 
 menuconfig DEVEL
diff --git a/include/kernel-defaults.mk b/include/kernel-defaults.mk
index 4266157d266..cf3eb31053c 100644
--- a/include/kernel-defaults.mk
+++ b/include/kernel-defaults.mk
@@ -97,6 +97,7 @@ define Kernel/Configure/Default
 	$(LINUX_CONFCMD) > $(LINUX_DIR)/.config.target
 	echo "$(if $(CONFIG_KERNEL_KALLSYMS),CONFIG_KALLSYMS=y,# CONFIG_KALLSYMS is not set)" >> $(LINUX_DIR)/.config.target
 	echo "$(if $(CONFIG_KERNEL_PROFILING),CONFIG_PROFILING=y,# CONFIG_PROFILING is not set)" >> $(LINUX_DIR)/.config.target
+	echo "$(if $(CONFIG_KERNEL_DEBUG_FS),CONFIG_DEBUG_FS=y,# CONFIG_DEBUG_FS is not set)" >> $(LINUX_DIR)/.config.target
 	echo "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target
 	echo "# CONFIG_KALLSYMS_ALL is not set" >> $(LINUX_DIR)/.config.target
 	echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target