diff options
Diffstat (limited to 'target/linux/generic/patches-3.12/220-gc_sections.patch')
| -rw-r--r-- | target/linux/generic/patches-3.12/220-gc_sections.patch | 538 |
1 files changed, 0 insertions, 538 deletions
diff --git a/target/linux/generic/patches-3.12/220-gc_sections.patch b/target/linux/generic/patches-3.12/220-gc_sections.patch deleted file mode 100644 index d2f2ffb..0000000 --- a/target/linux/generic/patches-3.12/220-gc_sections.patch +++ /dev/null @@ -1,538 +0,0 @@ -From: Felix Fietkau <nbd@openwrt.org> - -use -ffunction-sections, -fdata-sections and --gc-sections - -In combination with kernel symbol export stripping this significantly reduces -the kernel image size. Used on both ARM and MIPS architectures. - -Signed-off-by: Felix Fietkau <nbd@openwrt.org> -Signed-off-by: Jonas Gorski <jogo@openwrt.org> -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> ---- - ---- a/arch/mips/Makefile -+++ b/arch/mips/Makefile -@@ -89,10 +89,14 @@ 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 - -+ifndef CONFIG_FUNCTION_TRACER -+KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections -+endif -+ - cflags-y += -ffreestanding - - # ---- a/arch/mips/kernel/vmlinux.lds.S -+++ b/arch/mips/kernel/vmlinux.lds.S -@@ -67,7 +67,7 @@ SECTIONS - /* Exception table for data bus errors */ - __dbe_table : { - __start___dbe_table = .; -- *(__dbe_table) -+ KEEP(*(__dbe_table)) - __stop___dbe_table = .; - } - -@@ -112,7 +112,7 @@ 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 -@@ -87,7 +87,7 @@ - #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() -@@ -95,7 +95,7 @@ - - #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() -@@ -103,7 +103,7 @@ - - #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() -@@ -112,7 +112,7 @@ - #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() -@@ -120,7 +120,7 @@ - - #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) = .; - #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ - *(__tracepoint_str) /* Trace_printk fmt' pointer */ \ -@@ -133,7 +133,7 @@ - #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() -@@ -142,8 +142,8 @@ - #ifdef CONFIG_CLKSRC_OF - #define CLKSRC_OF_TABLES() . = ALIGN(8); \ - VMLINUX_SYMBOL(__clksrc_of_table) = .; \ -- *(__clksrc_of_table) \ -- *(__clksrc_of_table_end) -+ KEEP(*(__clksrc_of_table)) \ -+ KEEP(*(__clksrc_of_table_end)) - #else - #define CLKSRC_OF_TABLES() - #endif -@@ -152,8 +152,8 @@ - #define IRQCHIP_OF_MATCH_TABLE() \ - . = ALIGN(8); \ - VMLINUX_SYMBOL(__irqchip_begin) = .; \ -- *(__irqchip_of_table) \ -- *(__irqchip_of_end) -+ KEEP(*(__irqchip_of_table)) \ -+ KEEP(*(__irqchip_of_end)) - #else - #define IRQCHIP_OF_MATCH_TABLE() - #endif -@@ -161,8 +161,8 @@ - #ifdef CONFIG_COMMON_CLK - #define CLK_OF_TABLES() . = ALIGN(8); \ - VMLINUX_SYMBOL(__clk_of_table) = .; \ -- *(__clk_of_table) \ -- *(__clk_of_table_end) -+ KEEP(*(__clk_of_table)) \ -+ KEEP(*(__clk_of_table_end)) - #else - #define CLK_OF_TABLES() - #endif -@@ -170,7 +170,7 @@ - #define KERNEL_DTB() \ - STRUCT_ALIGN(); \ - VMLINUX_SYMBOL(__dtb_start) = .; \ -- *(.dtb.init.rodata) \ -+ KEEP(*(.dtb.init.rodata)) \ - VMLINUX_SYMBOL(__dtb_end) = .; - - /* .data section */ -@@ -186,16 +186,17 @@ - /* 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() \ -- TRACEPOINT_STR() -+ TRACEPOINT_STR() \ -+ *(.data.[a-zA-Z_]*) - - /* - * Data section helpers -@@ -249,32 +250,32 @@ - /* 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) = .; \ - } \ - \ -@@ -283,49 +284,49 @@ - /* 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) = .; \ - } \ - \ -@@ -339,14 +340,14 @@ - /* 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) = .; \ - } \ - \ -@@ -365,14 +366,14 @@ - /* 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) = .; \ -@@ -428,7 +429,7 @@ - #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 -@@ -456,7 +457,7 @@ - . = 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) = .; \ - } - -@@ -472,7 +473,7 @@ - #ifdef CONFIG_CONSTRUCTORS - #define KERNEL_CTORS() . = ALIGN(8); \ - VMLINUX_SYMBOL(__ctors_start) = .; \ -- *(.ctors) \ -+ KEEP(*(.ctors)) \ - VMLINUX_SYMBOL(__ctors_end) = .; - #else - #define KERNEL_CTORS() -@@ -516,7 +517,7 @@ - #define SBSS(sbss_align) \ - . = ALIGN(sbss_align); \ - .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ -- *(.sbss) \ -+ *(.sbss .sbss.*) \ - *(.scommon) \ - } - -@@ -534,7 +535,7 @@ - BSS_FIRST_SECTIONS \ - *(.bss..page_aligned) \ - *(.dynbss) \ -- *(.bss) \ -+ *(.bss .bss.*) \ - *(COMMON) \ - } - -@@ -583,7 +584,7 @@ - . = 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 -@@ -595,7 +596,7 @@ - . = ALIGN(4); \ - .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ - VMLINUX_SYMBOL(__tracedata_start) = .; \ -- *(.tracedata) \ -+ KEEP(*(.tracedata)) \ - VMLINUX_SYMBOL(__tracedata_end) = .; \ - } - #else -@@ -612,17 +613,17 @@ - #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) \ -@@ -636,21 +637,21 @@ - - #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 ---- a/arch/arm/Makefile -+++ b/arch/arm/Makefile -@@ -17,11 +17,16 @@ LDFLAGS_vmlinux :=-p --no-undefined -X - ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) - LDFLAGS_vmlinux += --be8 - endif -+LDFLAGS_vmlinux += --gc-sections - - OBJCOPYFLAGS :=-O binary -R .comment -S - GZFLAGS :=-9 - #KBUILD_CFLAGS +=-pipe - -+ifndef CONFIG_FUNCTION_TRACER -+KBUILD_CFLAGS_KERNEL += -ffunction-sections -fdata-sections -+endif -+ - # Never generate .eh_frame - KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) - ---- a/arch/arm/kernel/vmlinux.lds.S -+++ b/arch/arm/kernel/vmlinux.lds.S -@@ -12,13 +12,13 @@ - #define PROC_INFO \ - . = ALIGN(4); \ - VMLINUX_SYMBOL(__proc_info_begin) = .; \ -- *(.proc.info.init) \ -+ KEEP(*(.proc.info.init)) \ - VMLINUX_SYMBOL(__proc_info_end) = .; - - #define IDMAP_TEXT \ - ALIGN_FUNCTION(); \ - VMLINUX_SYMBOL(__idmap_text_start) = .; \ -- *(.idmap.text) \ -+ KEEP(*(.idmap.text)) \ - VMLINUX_SYMBOL(__idmap_text_end) = .; \ - . = ALIGN(32); \ - VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ -@@ -93,7 +93,7 @@ SECTIONS - .text : { /* Real text segment */ - _stext = .; /* Text and read-only data */ - __exception_text_start = .; -- *(.exception.text) -+ KEEP(*(.exception.text)) - __exception_text_end = .; - IRQENTRY_TEXT - TEXT_TEXT -@@ -118,7 +118,7 @@ SECTIONS - __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { - __start___ex_table = .; - #ifdef CONFIG_MMU -- *(__ex_table) -+ KEEP(*(__ex_table)) - #endif - __stop___ex_table = .; - } -@@ -130,12 +130,12 @@ SECTIONS - . = ALIGN(8); - .ARM.unwind_idx : { - __start_unwind_idx = .; -- *(.ARM.exidx*) -+ KEEP(*(.ARM.exidx*)) - __stop_unwind_idx = .; - } - .ARM.unwind_tab : { - __start_unwind_tab = .; -- *(.ARM.extab*) -+ KEEP(*(.ARM.extab*)) - __stop_unwind_tab = .; - } - #endif -@@ -154,14 +154,14 @@ SECTIONS - */ - __vectors_start = .; - .vectors 0 : AT(__vectors_start) { -- *(.vectors) -+ KEEP(*(.vectors)) - } - . = __vectors_start + SIZEOF(.vectors); - __vectors_end = .; - - __stubs_start = .; - .stubs 0x1000 : AT(__stubs_start) { -- *(.stubs) -+ KEEP(*(.stubs)) - } - . = __stubs_start + SIZEOF(.stubs); - __stubs_end = .; -@@ -175,24 +175,24 @@ SECTIONS - } - .init.arch.info : { - __arch_info_begin = .; -- *(.arch.info.init) -+ KEEP(*(.arch.info.init)) - __arch_info_end = .; - } - .init.tagtable : { - __tagtable_begin = .; -- *(.taglist.init) -+ KEEP(*(.taglist.init)) - __tagtable_end = .; - } - #ifdef CONFIG_SMP_ON_UP - .init.smpalt : { - __smpalt_begin = .; -- *(.alt.smp.init) -+ KEEP(*(.alt.smp.init)) - __smpalt_end = .; - } - #endif - .init.pv_table : { - __pv_table_begin = .; -- *(.pv_table) -+ KEEP(*(.pv_table)) - __pv_table_end = .; - } - .init.data : { ---- a/arch/arm/boot/compressed/Makefile -+++ b/arch/arm/boot/compressed/Makefile -@@ -124,6 +124,7 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y) - ORIG_CFLAGS := $(KBUILD_CFLAGS) - KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) - endif -+KBUILD_CFLAGS_KERNEL := $(patsubst -f%-sections,,$(KBUILD_CFLAGS_KERNEL)) - - ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) - asflags-y := -DZIMAGE |