Add menuconfig option for enabling profiling in the kernel.

SVN-Revision: 14272

Config.in

@@ -124,6 +124,12 @@ 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
+	help
+		Enable the extended profiling support mechanisms used by profilers such
+		as OProfile.
 
 endmenu
 

include/kernel-defaults.mk

@@ -87,6 +87,7 @@ endef
 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 "# CONFIG_KALLSYMS_EXTRA_PASS is not set" >> $(LINUX_DIR)/.config.target
 	echo "# CONFIG_KPROBES is not set" >> $(LINUX_DIR)/.config.target
 	$(SCRIPT_DIR)/metadata.pl kconfig $(TMP_DIR)/.packageinfo $(TOPDIR)/.config > $(LINUX_DIR)/.config.override