kernel: use -ffunction-sections, -fdata-sections and --gc-sections on mips

in combination with kernel symbol export stripping this significantly reduces
the kernel image size

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35320 3c298f89-4303-0410-b956-a3cf2f4a3e73

17 files changed, 418 insertions, 49 deletions

diff --git a/target/linux/generic/patches-3.7/220-gc_sections.patch b/target/linux/generic/patches-3.7/220-gc_sections.patch
new file mode 100644
index 000000000..8a52a1eec
--- /dev/null
+++ b/target/linux/generic/patches-3.7/220-gc_sections.patch
@@ -0,0 +1,372 @@
+--- a/arch/mips/Makefile
++++ b/arch/mips/Makefile
+@@ -89,10 +89,12 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin
+ #
+ cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
+ cflags-y			+= -msoft-float
+-LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
++LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
+ KBUILD_AFLAGS_MODULE		+= -mlong-calls
+ KBUILD_CFLAGS_MODULE		+= -mlong-calls
+ 
++KBUILD_CFLAGS_KERNEL		+= -ffunction-sections -fdata-sections
++
+ cflags-y += -ffreestanding
+ 
+ #
+--- a/arch/mips/kernel/vmlinux.lds.S
++++ b/arch/mips/kernel/vmlinux.lds.S
+@@ -66,7 +66,7 @@ SECTIONS
+ 	/* Exception table for data bus errors */
+ 	__dbe_table : {
+ 		__start___dbe_table = .;
+-		*(__dbe_table)
++		KEEP(*(__dbe_table))
+ 		__stop___dbe_table = .;
+ 	}
+ 
+@@ -111,7 +111,7 @@ SECTIONS
+ 	. = ALIGN(4);
+ 	.mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
+ 		__mips_machines_start = .;
+-		*(.mips.machines.init)
++		KEEP(*(.mips.machines.init))
+ 		__mips_machines_end = .;
+ 	}
+ 
+--- a/include/asm-generic/vmlinux.lds.h
++++ b/include/asm-generic/vmlinux.lds.h
+@@ -101,7 +101,7 @@
+ #ifdef CONFIG_FTRACE_MCOUNT_RECORD
+ #define MCOUNT_REC()	. = ALIGN(8);				\
+ 			VMLINUX_SYMBOL(__start_mcount_loc) = .; \
+-			*(__mcount_loc)				\
++			KEEP(*(__mcount_loc))			\
+ 			VMLINUX_SYMBOL(__stop_mcount_loc) = .;
+ #else
+ #define MCOUNT_REC()
+@@ -109,7 +109,7 @@
+ 
+ #ifdef CONFIG_TRACE_BRANCH_PROFILING
+ #define LIKELY_PROFILE()	VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
+-				*(_ftrace_annotated_branch)			      \
++				KEEP(*(_ftrace_annotated_branch))		      \
+ 				VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
+ #else
+ #define LIKELY_PROFILE()
+@@ -117,7 +117,7 @@
+ 
+ #ifdef CONFIG_PROFILE_ALL_BRANCHES
+ #define BRANCH_PROFILE()	VMLINUX_SYMBOL(__start_branch_profile) = .;   \
+-				*(_ftrace_branch)			      \
++				KEEP(*(_ftrace_branch))			      \
+ 				VMLINUX_SYMBOL(__stop_branch_profile) = .;
+ #else
+ #define BRANCH_PROFILE()
+@@ -126,7 +126,7 @@
+ #ifdef CONFIG_EVENT_TRACING
+ #define FTRACE_EVENTS()	. = ALIGN(8);					\
+ 			VMLINUX_SYMBOL(__start_ftrace_events) = .;	\
+-			*(_ftrace_events)				\
++			KEEP(*(_ftrace_events))				\
+ 			VMLINUX_SYMBOL(__stop_ftrace_events) = .;
+ #else
+ #define FTRACE_EVENTS()
+@@ -134,7 +134,7 @@
+ 
+ #ifdef CONFIG_TRACING
+ #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
+-			 *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
++			 KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
+ 			 VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
+ #else
+ #define TRACE_PRINTKS()
+@@ -143,7 +143,7 @@
+ #ifdef CONFIG_FTRACE_SYSCALLS
+ #define TRACE_SYSCALLS() . = ALIGN(8);					\
+ 			 VMLINUX_SYMBOL(__start_syscalls_metadata) = .;	\
+-			 *(__syscalls_metadata)				\
++			 KEEP(*(__syscalls_metadata))			\
+ 			 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
+ #else
+ #define TRACE_SYSCALLS()
+@@ -153,7 +153,7 @@
+ #define KERNEL_DTB()							\
+ 	STRUCT_ALIGN();							\
+ 	VMLINUX_SYMBOL(__dtb_start) = .;				\
+-	*(.dtb.init.rodata)						\
++	KEEP(*(.dtb.init.rodata))					\
+ 	VMLINUX_SYMBOL(__dtb_end) = .;
+ 
+ /* .data section */
+@@ -173,15 +173,16 @@
+ 	/* implement dynamic printk debug */				\
+ 	. = ALIGN(8);                                                   \
+ 	VMLINUX_SYMBOL(__start___jump_table) = .;                       \
+-	*(__jump_table)                                                 \
++	KEEP(*(__jump_table))                                           \
+ 	VMLINUX_SYMBOL(__stop___jump_table) = .;                        \
+ 	. = ALIGN(8);							\
+ 	VMLINUX_SYMBOL(__start___verbose) = .;                          \
+-	*(__verbose)                                                    \
++	KEEP(*(__verbose))                                              \
+ 	VMLINUX_SYMBOL(__stop___verbose) = .;				\
+ 	LIKELY_PROFILE()		       				\
+ 	BRANCH_PROFILE()						\
+-	TRACE_PRINTKS()
++	TRACE_PRINTKS()							\
++	*(.data.*)
+ 
+ /*
+  * Data section helpers
+@@ -235,39 +236,39 @@
+ 	/* PCI quirks */						\
+ 	.pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {	\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_early) = .;		\
+-		*(.pci_fixup_early)					\
++		KEEP(*(.pci_fixup_early))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_early) = .;		\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_header) = .;		\
+-		*(.pci_fixup_header)					\
++		KEEP(*(.pci_fixup_header))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_header) = .;		\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_final) = .;		\
+-		*(.pci_fixup_final)					\
++		KEEP(*(.pci_fixup_final))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_final) = .;		\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;		\
+-		*(.pci_fixup_enable)					\
++		KEEP(*(.pci_fixup_enable))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;		\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;		\
+-		*(.pci_fixup_resume)					\
++		KEEP(*(.pci_fixup_resume))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;		\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;	\
+-		*(.pci_fixup_resume_early)				\
++		KEEP(*(.pci_fixup_resume_early))			\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;	\
+ 		VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;		\
+-		*(.pci_fixup_suspend)					\
++		KEEP(*(.pci_fixup_suspend))				\
+ 		VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;		\
+ 	}								\
+ 									\
+ 	/* Built-in firmware blobs */					\
+ 	.builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {	\
+ 		VMLINUX_SYMBOL(__start_builtin_fw) = .;			\
+-		*(.builtin_fw)						\
++		KEEP(*(.builtin_fw))					\
+ 		VMLINUX_SYMBOL(__end_builtin_fw) = .;			\
+ 	}								\
+ 									\
+ 	/* RapidIO route ops */						\
+ 	.rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__start_rio_switch_ops) = .;		\
+-		*(.rio_switch_ops)					\
++		KEEP(*(.rio_switch_ops))				\
+ 		VMLINUX_SYMBOL(__end_rio_switch_ops) = .;		\
+ 	}								\
+ 									\
+@@ -276,49 +277,49 @@
+ 	/* Kernel symbol table: Normal symbols */			\
+ 	__ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__start___ksymtab) = .;			\
+-		*(SORT(___ksymtab+*))					\
++		KEEP(*(SORT(___ksymtab+*)))				\
+ 		VMLINUX_SYMBOL(__stop___ksymtab) = .;			\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: GPL-only symbols */			\
+ 	__ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {	\
+ 		VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;		\
+-		*(SORT(___ksymtab_gpl+*))				\
++		KEEP(*(SORT(___ksymtab_gpl+*)))				\
+ 		VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;		\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: Normal unused symbols */		\
+ 	__ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {	\
+ 		VMLINUX_SYMBOL(__start___ksymtab_unused) = .;		\
+-		*(SORT(___ksymtab_unused+*))				\
++		KEEP(*(SORT(___ksymtab_unused+*)))			\
+ 		VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;		\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: GPL-only unused symbols */		\
+ 	__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
+ 		VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;	\
+-		*(SORT(___ksymtab_unused_gpl+*))			\
++		KEEP(*(SORT(___ksymtab_unused_gpl+*)))			\
+ 		VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;	\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: GPL-future-only symbols */		\
+ 	__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
+ 		VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;	\
+-		*(SORT(___ksymtab_gpl_future+*))			\
++		KEEP(*(SORT(___ksymtab_gpl_future+*)))			\
+ 		VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;	\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: Normal symbols */			\
+ 	__kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__start___kcrctab) = .;			\
+-		*(SORT(___kcrctab+*))					\
++		KEEP(*(SORT(___kcrctab+*)))				\
+ 		VMLINUX_SYMBOL(__stop___kcrctab) = .;			\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: GPL-only symbols */			\
+ 	__kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {	\
+ 		VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;		\
+-		*(SORT(___kcrctab_gpl+*))				\
++		KEEP(*(SORT(___kcrctab_gpl+*)))				\
+ 		VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;		\
+ 	}								\
+ 									\
+@@ -332,14 +333,14 @@
+ 	/* Kernel symbol table: GPL-only unused symbols */		\
+ 	__kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
+ 		VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;	\
+-		*(SORT(___kcrctab_unused_gpl+*))			\
++		KEEP(*(SORT(___kcrctab_unused_gpl+*)))			\
+ 		VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;	\
+ 	}								\
+ 									\
+ 	/* Kernel symbol table: GPL-future-only symbols */		\
+ 	__kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
+ 		VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;	\
+-		*(SORT(___kcrctab_gpl_future+*))			\
++		KEEP(*(SORT(___kcrctab_gpl_future+*)))			\
+ 		VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;	\
+ 	}								\
+ 									\
+@@ -362,14 +363,14 @@
+ 	/* Built-in module parameters. */				\
+ 	__param : AT(ADDR(__param) - LOAD_OFFSET) {			\
+ 		VMLINUX_SYMBOL(__start___param) = .;			\
+-		*(__param)						\
++		KEEP(*(__param))					\
+ 		VMLINUX_SYMBOL(__stop___param) = .;			\
+ 	}								\
+ 									\
+ 	/* Built-in module versions. */					\
+ 	__modver : AT(ADDR(__modver) - LOAD_OFFSET) {			\
+ 		VMLINUX_SYMBOL(__start___modver) = .;			\
+-		*(__modver)						\
++		KEEP(*(__modver))					\
+ 		VMLINUX_SYMBOL(__stop___modver) = .;			\
+ 		. = ALIGN((align));					\
+ 		VMLINUX_SYMBOL(__end_rodata) = .;			\
+@@ -429,7 +430,7 @@
+ #define ENTRY_TEXT							\
+ 		ALIGN_FUNCTION();					\
+ 		VMLINUX_SYMBOL(__entry_text_start) = .;			\
+-		*(.entry.text)						\
++		KEEP(*(.entry.text))					\
+ 		VMLINUX_SYMBOL(__entry_text_end) = .;
+ 
+ #ifdef CONFIG_FUNCTION_GRAPH_TRACER
+@@ -457,7 +458,7 @@
+ 	. = ALIGN(align);						\
+ 	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__start___ex_table) = .;			\
+-		*(__ex_table)						\
++		KEEP(*(__ex_table))						\
+ 		VMLINUX_SYMBOL(__stop___ex_table) = .;			\
+ 	}
+ 
+@@ -473,7 +474,7 @@
+ #ifdef CONFIG_CONSTRUCTORS
+ #define KERNEL_CTORS()	. = ALIGN(8);			   \
+ 			VMLINUX_SYMBOL(__ctors_start) = .; \
+-			*(.ctors)			   \
++			KEEP(*(.ctors))			   \
+ 			VMLINUX_SYMBOL(__ctors_end) = .;
+ #else
+ #define KERNEL_CTORS()
+@@ -526,7 +527,7 @@
+ #define SBSS(sbss_align)						\
+ 	. = ALIGN(sbss_align);						\
+ 	.sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {				\
+-		*(.sbss)						\
++		*(.sbss .sbss.*)					\
+ 		*(.scommon)						\
+ 	}
+ 
+@@ -544,7 +545,7 @@
+ 		BSS_FIRST_SECTIONS					\
+ 		*(.bss..page_aligned)					\
+ 		*(.dynbss)						\
+-		*(.bss)							\
++		*(.bss .bss.*)						\
+ 		*(COMMON)						\
+ 	}
+ 
+@@ -593,7 +594,7 @@
+ 	. = ALIGN(8);							\
+ 	__bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__start___bug_table) = .;		\
+-		*(__bug_table)						\
++		KEEP(*(__bug_table))					\
+ 		VMLINUX_SYMBOL(__stop___bug_table) = .;			\
+ 	}
+ #else
+@@ -605,7 +606,7 @@
+ 	. = ALIGN(4);							\
+ 	.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {		\
+ 		VMLINUX_SYMBOL(__tracedata_start) = .;			\
+-		*(.tracedata)						\
++		KEEP(*(.tracedata))					\
+ 		VMLINUX_SYMBOL(__tracedata_end) = .;			\
+ 	}
+ #else
+@@ -622,17 +623,17 @@
+ #define INIT_SETUP(initsetup_align)					\
+ 		. = ALIGN(initsetup_align);				\
+ 		VMLINUX_SYMBOL(__setup_start) = .;			\
+-		*(.init.setup)						\
++		KEEP(*(.init.setup))					\
+ 		VMLINUX_SYMBOL(__setup_end) = .;
+ 
+ #define INIT_CALLS_LEVEL(level)						\
+ 		VMLINUX_SYMBOL(__initcall##level##_start) = .;		\
+-		*(.initcall##level##.init)				\
+-		*(.initcall##level##s.init)				\
++		KEEP(*(.initcall##level##.init))			\
++		KEEP(*(.initcall##level##s.init))			\
+ 
+ #define INIT_CALLS							\
+ 		VMLINUX_SYMBOL(__initcall_start) = .;			\
+-		*(.initcallearly.init)					\
++		KEEP(*(.initcallearly.init))				\
+ 		INIT_CALLS_LEVEL(0)					\
+ 		INIT_CALLS_LEVEL(1)					\
+ 		INIT_CALLS_LEVEL(2)					\
+@@ -646,21 +647,21 @@
+ 
+ #define CON_INITCALL							\
+ 		VMLINUX_SYMBOL(__con_initcall_start) = .;		\
+-		*(.con_initcall.init)					\
++		KEEP(*(.con_initcall.init))				\
+ 		VMLINUX_SYMBOL(__con_initcall_end) = .;
+ 
+ #define SECURITY_INITCALL						\
+ 		VMLINUX_SYMBOL(__security_initcall_start) = .;		\
+-		*(.security_initcall.init)				\
++		KEEP(*(.security_initcall.init))			\
+ 		VMLINUX_SYMBOL(__security_initcall_end) = .;
+ 
+ #ifdef CONFIG_BLK_DEV_INITRD
+ #define INIT_RAM_FS							\
+ 	. = ALIGN(4);							\
+ 	VMLINUX_SYMBOL(__initramfs_start) = .;				\
+-	*(.init.ramfs)							\
++	KEEP(*(.init.ramfs))						\
+ 	. = ALIGN(8);							\
+-	*(.init.ramfs.info)
++	KEEP(*(.init.ramfs.info))
+ #else
+ #define INIT_RAM_FS
+ #endif
diff --git a/target/linux/generic/patches-3.7/220-module_exports.patch b/target/linux/generic/patches-3.7/221-module_exports.patch
index fc382c16f..da08de626 100644
--- a/target/linux/generic/patches-3.7/220-module_exports.patch
+++ b/target/linux/generic/patches-3.7/221-module_exports.patch
@@ -1,29 +1,27 @@
 --- a/include/asm-generic/vmlinux.lds.h
 +++ b/include/asm-generic/vmlinux.lds.h
-@@ -52,6 +52,18 @@
+@@ -52,6 +52,16 @@
  #define LOAD_OFFSET 0
  #endif
  
-+#ifndef SYMTAB_KEEP_STR
-+#define SYMTAB_KEEP *(SORT(___ksymtab+*))
-+#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*))
-+#define SYMTAB_KEEP_STR *(__ksymtab_strings+*)
++#ifndef SYMTAB_KEEP
++#define SYMTAB_KEEP KEEP(*(SORT(___ksymtab+*)))
++#define SYMTAB_KEEP_GPL KEEP(*(SORT(___ksymtab_gpl+*)))
 +#endif
 +
 +#ifndef SYMTAB_DISCARD
 +#define SYMTAB_DISCARD
 +#define SYMTAB_DISCARD_GPL
-+#define SYMTAB_DISCARD_STR
 +#endif
 +
  #ifndef SYMBOL_PREFIX
  #define VMLINUX_SYMBOL(sym) sym
  #else
-@@ -276,14 +288,14 @@
+@@ -277,14 +287,14 @@
  	/* Kernel symbol table: Normal symbols */			\
  	__ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {		\
  		VMLINUX_SYMBOL(__start___ksymtab) = .;			\
--		*(SORT(___ksymtab+*))					\
+-		KEEP(*(SORT(___ksymtab+*)))				\
 +		SYMTAB_KEEP						\
  		VMLINUX_SYMBOL(__stop___ksymtab) = .;			\
  	}								\
@@ -31,30 +29,40 @@
  	/* Kernel symbol table: GPL-only symbols */			\
  	__ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {	\
  		VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;		\
--		*(SORT(___ksymtab_gpl+*))				\
+-		KEEP(*(SORT(___ksymtab_gpl+*)))				\
 +		SYMTAB_KEEP_GPL						\
  		VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;		\
  	}								\
  									\
-@@ -345,7 +357,7 @@
+@@ -346,7 +356,7 @@
  									\
  	/* Kernel symbol table: strings */				\
          __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {	\
 -		*(__ksymtab_strings)					\
-+		SYMTAB_KEEP_STR						\
++		*(__ksymtab_strings+*)					\
  	}								\
  									\
  	/* __*init sections */						\
-@@ -679,6 +691,9 @@
+@@ -680,6 +690,8 @@
  	EXIT_TEXT							\
  	EXIT_DATA							\
  	EXIT_CALL							\
 +	SYMTAB_DISCARD							\
 +	SYMTAB_DISCARD_GPL						\
-+	SYMTAB_DISCARD_STR						\
  	*(.discard)							\
  	*(.discard.*)							\
  	}
+--- a/scripts/Makefile.build
++++ b/scripts/Makefile.build
+@@ -348,7 +348,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $(
+ # Linker scripts preprocessor (.lds.S -> .lds)
+ # ---------------------------------------------------------------------------
+ quiet_cmd_cpp_lds_S = LDS     $@
+-      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \
++      cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \
+ 	                     -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<
+ 
+ $(obj)/%.lds: $(src)/%.lds.S FORCE
 --- a/include/linux/export.h
 +++ b/include/linux/export.h
 @@ -45,12 +45,19 @@ extern struct module __this_module;
@@ -78,14 +86,3 @@
  	= MODULE_SYMBOL_PREFIX #sym;				\
  	static const struct kernel_symbol __ksymtab_##sym	\
  	__used							\
---- a/scripts/Makefile.build
-+++ b/scripts/Makefile.build
-@@ -348,7 +348,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $(
- # Linker scripts preprocessor (.lds.S -> .lds)
- # ---------------------------------------------------------------------------
- quiet_cmd_cpp_lds_S = LDS     $@
--      cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \
-+      cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \
- 	                     -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $<
- 
- $(obj)/%.lds: $(src)/%.lds.S FORCE
diff --git a/target/linux/generic/patches-3.7/230-openwrt_lzma_options.patch b/target/linux/generic/patches-3.7/230-openwrt_lzma_options.patch
index b09c24d4c..972b876df 100644
--- a/target/linux/generic/patches-3.7/230-openwrt_lzma_options.patch
+++ b/target/linux/generic/patches-3.7/230-openwrt_lzma_options.patch
@@ -1,6 +1,6 @@
 --- a/scripts/Makefile.lib
 +++ b/scripts/Makefile.lib
-@@ -296,7 +296,7 @@ cmd_bzip2 = (cat $(filter-out FORCE,$^)
+@@ -296,7 +296,7 @@ cmd_bzip2 = (cat $(filter-out FORCE,$^) 
  
  quiet_cmd_lzma = LZMA    $@
  cmd_lzma = (cat $(filter-out FORCE,$^) | \
diff --git a/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch b/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch
index 1da954005..44c6b04fc 100644
--- a/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch
+++ b/target/linux/generic/patches-3.7/302-mips_no_branch_likely.patch
@@ -7,5 +7,5 @@
 -cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
 +cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely
  cflags-y			+= -msoft-float
- LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
+ LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
  KBUILD_AFLAGS_MODULE		+= -mlong-calls
diff --git a/target/linux/generic/patches-3.7/305-mips_module_reloc.patch b/target/linux/generic/patches-3.7/305-mips_module_reloc.patch
index 3c51d14cf..f0f513741 100644
--- a/target/linux/generic/patches-3.7/305-mips_module_reloc.patch
+++ b/target/linux/generic/patches-3.7/305-mips_module_reloc.patch
@@ -3,7 +3,7 @@
 @@ -90,8 +90,13 @@ all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlin
  cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe -mno-branch-likely
  cflags-y			+= -msoft-float
- LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
+ LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib --gc-sections
 +ifdef CONFIG_64BIT
  KBUILD_AFLAGS_MODULE		+= -mlong-calls
  KBUILD_CFLAGS_MODULE		+= -mlong-calls
@@ -12,7 +12,7 @@
 +KBUILD_CFLAGS_MODULE		+= -mno-long-calls
 +endif
  
- cflags-y += -ffreestanding
+ KBUILD_CFLAGS_KERNEL		+= -ffunction-sections -fdata-sections
  
 --- a/arch/mips/include/asm/module.h
 +++ b/arch/mips/include/asm/module.h
diff --git a/target/linux/generic/patches-3.7/306-mips_mem_functions_performance.patch b/target/linux/generic/patches-3.7/306-mips_mem_functions_performance.patch
index 981867742..e6056fa5c 100644
--- a/target/linux/generic/patches-3.7/306-mips_mem_functions_performance.patch
+++ b/target/linux/generic/patches-3.7/306-mips_mem_functions_performance.patch
@@ -1,6 +1,6 @@
 --- a/arch/mips/include/asm/string.h
 +++ b/arch/mips/include/asm/string.h
-@@ -133,11 +133,44 @@ strncmp(__const__ char *__cs, __const__
+@@ -133,11 +133,44 @@ strncmp(__const__ char *__cs, __const__ 
  
  #define __HAVE_ARCH_MEMSET
  extern void *memset(void *__s, int __c, size_t __count);
diff --git a/target/linux/generic/patches-3.7/340-module_alloc_size_check.patch b/target/linux/generic/patches-3.7/340-module_alloc_size_check.patch
index 2459b6183..e48c0d2c1 100644
--- a/target/linux/generic/patches-3.7/340-module_alloc_size_check.patch
+++ b/target/linux/generic/patches-3.7/340-module_alloc_size_check.patch
@@ -1,6 +1,6 @@
 --- a/kernel/module.c
 +++ b/kernel/module.c
-@@ -2378,12 +2378,15 @@ static void dynamic_debug_remove(struct
+@@ -2378,12 +2378,15 @@ static void dynamic_debug_remove(struct 
  
  void * __weak module_alloc(unsigned long size)
  {
diff --git a/target/linux/generic/patches-3.7/504-yaffs-Mods-for-Linux-3.0-and-fix-a-typo.patch b/target/linux/generic/patches-3.7/504-yaffs-Mods-for-Linux-3.0-and-fix-a-typo.patch
index 1b814e97f..4767e769b 100644
--- a/target/linux/generic/patches-3.7/504-yaffs-Mods-for-Linux-3.0-and-fix-a-typo.patch
+++ b/target/linux/generic/patches-3.7/504-yaffs-Mods-for-Linux-3.0-and-fix-a-typo.patch
@@ -26,7 +26,7 @@ Signed-off-by: Charles Manning <cdhmanning@gmail.com>
  #include <linux/pagemap.h>
  #include <linux/mtd/mtd.h>
  #include <linux/interrupt.h>
-@@ -236,7 +238,9 @@ static int yaffs_file_flush(struct file
+@@ -236,7 +238,9 @@ static int yaffs_file_flush(struct file 
  static int yaffs_file_flush(struct file *file);
  #endif
  
diff --git a/target/linux/generic/patches-3.7/512-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch b/target/linux/generic/patches-3.7/512-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch
index 1ca189d2e..7787d500a 100644
--- a/target/linux/generic/patches-3.7/512-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch
+++ b/target/linux/generic/patches-3.7/512-yaffs-3.5-convert-to-use-kuid_t-kgid_t.patch
@@ -216,7 +216,7 @@
  	result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags);
  	if(memcmp(buffer,data,dev->data_bytes_per_chunk) ||
  		tempTags.obj_id != tags->obj_id ||
-@@ -424,7 +424,7 @@ static int yaffs_write_new_chunk(struct
+@@ -424,7 +424,7 @@ static int yaffs_write_new_chunk(struct 
  		 * lot of checks that are most likely not needed.
  		 *
  		 * Mods to the above
@@ -225,7 +225,7 @@
  		 * rest of the block.
  		 */
  
-@@ -486,7 +486,7 @@ static int yaffs_write_new_chunk(struct
+@@ -486,7 +486,7 @@ static int yaffs_write_new_chunk(struct 
  }
  
  
@@ -279,7 +279,7 @@
  					/* Free chunks already includes softdeleted chunks.
  					 * How ever this chunk is going to soon be really deleted
  					 * which will increment free chunks.
-@@ -2752,7 +2752,7 @@ int yaffs_put_chunk_in_file(yaffs_obj_t
+@@ -2752,7 +2752,7 @@ int yaffs_put_chunk_in_file(yaffs_obj_t 
  					NULL);
  	if (!tn)
  		return YAFFS_FAIL;
@@ -455,7 +455,7 @@
  #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
  	else if (obj->short_name[0]) {
  		yaffs_strcpy(name, obj->short_name);
-@@ -4861,9 +4861,9 @@ int yaffs_set_attribs(yaffs_obj_t *obj,
+@@ -4861,9 +4861,9 @@ int yaffs_set_attribs(yaffs_obj_t *obj, 
  	if (valid & ATTR_MODE)
  		obj->yst_mode = attr->ia_mode;
  	if (valid & ATTR_UID)
@@ -467,7 +467,7 @@
  
  	if (valid & ATTR_ATIME)
  		obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
-@@ -4886,9 +4886,9 @@ int yaffs_get_attribs(yaffs_obj_t *obj,
+@@ -4886,9 +4886,9 @@ int yaffs_get_attribs(yaffs_obj_t *obj, 
  
  	attr->ia_mode = obj->yst_mode;
  	valid |= ATTR_MODE;
diff --git a/target/linux/generic/patches-3.7/531-debloat_lzma.patch b/target/linux/generic/patches-3.7/531-debloat_lzma.patch
index 1e41661eb..18e4a51ee 100644
--- a/target/linux/generic/patches-3.7/531-debloat_lzma.patch
+++ b/target/linux/generic/patches-3.7/531-debloat_lzma.patch
@@ -124,7 +124,7 @@
  /* LzmaDecode
 --- a/lib/lzma/LzmaDec.c
 +++ b/lib/lzma/LzmaDec.c
-@@ -682,7 +682,7 @@ static void LzmaDec_InitRc(CLzmaDec *p,
+@@ -682,7 +682,7 @@ static void LzmaDec_InitRc(CLzmaDec *p, 
    p->needFlush = 0;
  }
  
@@ -194,7 +194,7 @@
  {
    CLzmaProps propNew;
    RINOK(LzmaProps_Decode(&propNew, props, propsSize));
-@@ -944,7 +944,7 @@ SRes LzmaDec_AllocateProbs(CLzmaDec *p,
+@@ -944,7 +944,7 @@ SRes LzmaDec_AllocateProbs(CLzmaDec *p, 
    return SZ_OK;
  }
  
@@ -375,7 +375,7 @@
  void MatchFinder_Construct(CMatchFinder *p);
  
  /* Conditions:
-@@ -70,12 +65,6 @@ int MatchFinder_Create(CMatchFinder *p,
+@@ -70,12 +65,6 @@ int MatchFinder_Create(CMatchFinder *p, 
      UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter,
      ISzAlloc *alloc);
  void MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc);
diff --git a/target/linux/generic/patches-3.7/600-netfilter_layer7_2.22.patch b/target/linux/generic/patches-3.7/600-netfilter_layer7_2.22.patch
index 0c8c5e890..dcec3791b 100644
--- a/target/linux/generic/patches-3.7/600-netfilter_layer7_2.22.patch
+++ b/target/linux/generic/patches-3.7/600-netfilter_layer7_2.22.patch
@@ -30,7 +30,7 @@
  	depends on NETFILTER_ADVANCED
 --- a/net/netfilter/Makefile
 +++ b/net/netfilter/Makefile
-@@ -131,6 +131,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT)
+@@ -131,6 +131,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_RECENT) 
  obj-$(CONFIG_NETFILTER_XT_MATCH_SCTP) += xt_sctp.o
  obj-$(CONFIG_NETFILTER_XT_MATCH_SOCKET) += xt_socket.o
  obj-$(CONFIG_NETFILTER_XT_MATCH_STATE) += xt_state.o
diff --git a/target/linux/generic/patches-3.7/610-netfilter_match_bypass_default_checks.patch b/target/linux/generic/patches-3.7/610-netfilter_match_bypass_default_checks.patch
index 0081da01d..ded6f5f15 100644
--- a/target/linux/generic/patches-3.7/610-netfilter_match_bypass_default_checks.patch
+++ b/target/linux/generic/patches-3.7/610-netfilter_match_bypass_default_checks.patch
@@ -76,11 +76,10 @@
  
  	counters = alloc_counters(table);
  	if (IS_ERR(counters))
-@@ -960,6 +989,14 @@ copy_entries_to_user(unsigned int total_
- 			ret = -EFAULT;
+@@ -961,6 +990,14 @@ copy_entries_to_user(unsigned int total_
  			goto free_counters;
  		}
-+
+ 
 +		flags = e->ip.flags & IPT_F_MASK;
 +		if (copy_to_user(userptr + off
 +				 + offsetof(struct ipt_entry, ip.flags),
@@ -88,6 +87,7 @@
 +			ret = -EFAULT;
 +			goto free_counters;
 +		}
- 
++
  		for (i = sizeof(struct ipt_entry);
  		     i < e->target_offset;
+ 		     i += m->u.match_size) {
diff --git a/target/linux/generic/patches-3.7/653-disable_netlink_trim.patch b/target/linux/generic/patches-3.7/653-disable_netlink_trim.patch
index 654d92e31..2a0a51a55 100644
--- a/target/linux/generic/patches-3.7/653-disable_netlink_trim.patch
+++ b/target/linux/generic/patches-3.7/653-disable_netlink_trim.patch
@@ -1,6 +1,6 @@
 --- a/net/netlink/af_netlink.c
 +++ b/net/netlink/af_netlink.c
-@@ -895,25 +895,7 @@ void netlink_detachskb(struct sock *sk,
+@@ -895,25 +895,7 @@ void netlink_detachskb(struct sock *sk, 
  
  static struct sk_buff *netlink_trim(struct sk_buff *skb, gfp_t allocation)
  {
diff --git a/target/linux/generic/patches-3.7/750-hostap_txpower.patch b/target/linux/generic/patches-3.7/750-hostap_txpower.patch
index 814406df1..a111c8127 100644
--- a/target/linux/generic/patches-3.7/750-hostap_txpower.patch
+++ b/target/linux/generic/patches-3.7/750-hostap_txpower.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/hostap/hostap_ap.c
 +++ b/drivers/net/wireless/hostap/hostap_ap.c
-@@ -2340,13 +2340,13 @@ int prism2_ap_get_sta_qual(local_info_t
+@@ -2340,13 +2340,13 @@ int prism2_ap_get_sta_qual(local_info_t 
  		addr[count].sa_family = ARPHRD_ETHER;
  		memcpy(addr[count].sa_data, sta->addr, ETH_ALEN);
  		if (sta->last_rx_silence == 0)
diff --git a/target/linux/generic/patches-3.7/901-debloat_sock_diag.patch b/target/linux/generic/patches-3.7/901-debloat_sock_diag.patch
index 4065f8aea..119760648 100644
--- a/target/linux/generic/patches-3.7/901-debloat_sock_diag.patch
+++ b/target/linux/generic/patches-3.7/901-debloat_sock_diag.patch
@@ -12,7 +12,7 @@
  	help
 --- a/net/core/Makefile
 +++ b/net/core/Makefile
-@@ -8,9 +8,9 @@ obj-y := sock.o request_sock.o skbuff.o
+@@ -8,9 +8,9 @@ obj-y := sock.o request_sock.o skbuff.o 
  obj-$(CONFIG_SYSCTL) += sysctl_net_core.o
  
  obj-y		     += dev.o ethtool.o dev_addr_lists.o dst.o netevent.o \
diff --git a/target/linux/generic/patches-3.7/941-ocf_20120127.patch b/target/linux/generic/patches-3.7/941-ocf_20120127.patch
index 326471421..1f3b581b7 100644
--- a/target/linux/generic/patches-3.7/941-ocf_20120127.patch
+++ b/target/linux/generic/patches-3.7/941-ocf_20120127.patch
@@ -24,7 +24,7 @@
   * All of these routines try to estimate how many bits of randomness a
   * particular randomness source.  They do this by keeping track of the
   * first and second order deltas of the event timings.
-@@ -799,6 +809,63 @@ void add_disk_randomness(struct gendisk
+@@ -799,6 +809,63 @@ void add_disk_randomness(struct gendisk 
  }
  #endif
  
diff --git a/target/linux/generic/patches-3.7/992-mpcore_wdt_fix_watchdog_counter_loading.patch b/target/linux/generic/patches-3.7/992-mpcore_wdt_fix_watchdog_counter_loading.patch
index 26bb9b8b2..315d9ac10 100644
--- a/target/linux/generic/patches-3.7/992-mpcore_wdt_fix_watchdog_counter_loading.patch
+++ b/target/linux/generic/patches-3.7/992-mpcore_wdt_fix_watchdog_counter_loading.patch
@@ -55,7 +55,7 @@ Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
  	{ .compatible = "arm,cortex-a9-twd-timer",	},
 --- a/drivers/watchdog/mpcore_wdt.c
 +++ b/drivers/watchdog/mpcore_wdt.c
-@@ -102,9 +102,7 @@ static void mpcore_wdt_keepalive(struct
+@@ -102,9 +102,7 @@ static void mpcore_wdt_keepalive(struct 
  
  	spin_lock(&wdt_lock);
  	/* Assume prescale is set to 256 */