diff options
Diffstat (limited to 'target/linux/generic/hack-4.9/220-gc_sections.patch')
| -rw-r--r-- | target/linux/generic/hack-4.9/220-gc_sections.patch | 448 |
1 files changed, 0 insertions, 448 deletions
diff --git a/target/linux/generic/hack-4.9/220-gc_sections.patch b/target/linux/generic/hack-4.9/220-gc_sections.patch deleted file mode 100644 index bdacb0f3ed..0000000000 --- a/target/linux/generic/hack-4.9/220-gc_sections.patch +++ /dev/null @@ -1,448 +0,0 @@ -From e3d8676f5722b7622685581e06e8f53e6138e3ab Mon Sep 17 00:00:00 2001 -From: Felix Fietkau <nbd@nbd.name> -Date: Sat, 15 Jul 2017 23:42:36 +0200 -Subject: 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@nbd.name> -Signed-off-by: Jonas Gorski <jogo@openwrt.org> -Signed-off-by: Gabor Juhos <juhosg@openwrt.org> ---- - Makefile | 10 +++---- - arch/arm/Kconfig | 1 + - arch/arm/boot/compressed/Makefile | 1 + - arch/arm/kernel/vmlinux.lds.S | 26 ++++++++-------- - arch/mips/Kconfig | 1 + - arch/mips/kernel/vmlinux.lds.S | 4 +-- - include/asm-generic/vmlinux.lds.h | 63 ++++++++++++++++++++------------------- - 7 files changed, 55 insertions(+), 51 deletions(-) - ---- a/Makefile -+++ b/Makefile -@@ -402,6 +402,11 @@ KBUILD_LDFLAGS_MODULE := -T $(srctree)/s - GCC_PLUGINS_CFLAGS := - CLANG_FLAGS := - -+ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION -+KBUILD_CFLAGS_KERNEL += $(call cc-option,-ffunction-sections,) -+KBUILD_CFLAGS_KERNEL += $(call cc-option,-fdata-sections,) -+endif -+ - # Read KERNELRELEASE from include/config/kernel.release (if it exists) - KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) - KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) -@@ -652,11 +657,6 @@ KBUILD_CFLAGS += $(call cc-disable-warni - KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) - KBUILD_CFLAGS += $(call cc-disable-warning, attribute-alias) - --ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION --KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,) --KBUILD_CFLAGS += $(call cc-option,-fdata-sections,) --endif -- - ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE - KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) $(EXTRA_OPTIMIZATION) - else ---- a/arch/arm/Kconfig -+++ b/arch/arm/Kconfig -@@ -81,6 +81,7 @@ config ARM - select HAVE_UID16 - select HAVE_VIRT_CPU_ACCOUNTING_GEN - select IRQ_FORCED_THREADING -+ select LD_DEAD_CODE_DATA_ELIMINATION - select MODULES_USE_ELF_REL - select NO_BOOTMEM - select OF_EARLY_FLATTREE if OF ---- a/arch/arm/boot/compressed/Makefile -+++ b/arch/arm/boot/compressed/Makefile -@@ -102,6 +102,7 @@ ifeq ($(CONFIG_FUNCTION_TRACER),y) - ORIG_CFLAGS := $(KBUILD_CFLAGS) - KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) - endif -+KBUILD_CFLAGS_KERNEL := $(patsubst -f%-sections,,$(KBUILD_CFLAGS_KERNEL)) - - # -fstack-protector-strong triggers protection checks in this code, - # but it is being used too early to link to meaningful stack_chk logic. ---- a/arch/arm/kernel/vmlinux.lds.S -+++ b/arch/arm/kernel/vmlinux.lds.S -@@ -17,7 +17,7 @@ - #define PROC_INFO \ - . = ALIGN(4); \ - VMLINUX_SYMBOL(__proc_info_begin) = .; \ -- *(.proc.info.init) \ -+ KEEP(*(.proc.info.init)) \ - VMLINUX_SYMBOL(__proc_info_end) = .; - - #define HYPERVISOR_TEXT \ -@@ -28,11 +28,11 @@ - #define IDMAP_TEXT \ - ALIGN_FUNCTION(); \ - VMLINUX_SYMBOL(__idmap_text_start) = .; \ -- *(.idmap.text) \ -+ KEEP(*(.idmap.text)) \ - VMLINUX_SYMBOL(__idmap_text_end) = .; \ - . = ALIGN(PAGE_SIZE); \ - VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ -- *(.hyp.idmap.text) \ -+ KEEP(*(.hyp.idmap.text)) \ - VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; - - #ifdef CONFIG_HOTPLUG_CPU -@@ -105,7 +105,7 @@ SECTIONS - _stext = .; /* Text and read-only data */ - IDMAP_TEXT - __exception_text_start = .; -- *(.exception.text) -+ KEEP(*(.exception.text)) - __exception_text_end = .; - IRQENTRY_TEXT - SOFTIRQENTRY_TEXT -@@ -134,7 +134,7 @@ SECTIONS - __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { - __start___ex_table = .; - #ifdef CONFIG_MMU -- *(__ex_table) -+ KEEP(*(__ex_table)) - #endif - __stop___ex_table = .; - } -@@ -146,12 +146,12 @@ 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 -@@ -171,14 +171,14 @@ SECTIONS - */ - __vectors_start = .; - .vectors 0xffff0000 : AT(__vectors_start) { -- *(.vectors) -+ KEEP(*(.vectors)) - } - . = __vectors_start + SIZEOF(.vectors); - __vectors_end = .; - - __stubs_start = .; - .stubs ADDR(.vectors) + 0x1000 : AT(__stubs_start) { -- *(.stubs) -+ KEEP(*(.stubs)) - } - . = __stubs_start + SIZEOF(.stubs); - __stubs_end = .; -@@ -194,24 +194,24 @@ 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/mips/Kconfig -+++ b/arch/mips/Kconfig -@@ -56,6 +56,7 @@ config MIPS - select CLONE_BACKWARDS - select HAVE_DEBUG_STACKOVERFLOW - select HAVE_CC_STACKPROTECTOR -+ select LD_DEAD_CODE_DATA_ELIMINATION - select CPU_PM if CPU_IDLE - select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_BINFMT_ELF_STATE ---- a/arch/mips/kernel/vmlinux.lds.S -+++ b/arch/mips/kernel/vmlinux.lds.S -@@ -71,7 +71,7 @@ SECTIONS - /* Exception table for data bus errors */ - __dbe_table : { - __start___dbe_table = .; -- *(__dbe_table) -+ KEEP(*(__dbe_table)) - __stop___dbe_table = .; - } - -@@ -121,7 +121,7 @@ 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 -@@ -105,7 +105,7 @@ - #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() -@@ -113,7 +113,7 @@ - - #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() -@@ -121,7 +121,7 @@ - - #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() -@@ -130,7 +130,7 @@ - #ifdef CONFIG_KPROBES - #define KPROBE_BLACKLIST() . = ALIGN(8); \ - VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \ -- *(_kprobe_blacklist) \ -+ KEEP(*(_kprobe_blacklist)) \ - VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .; - #else - #define KPROBE_BLACKLIST() -@@ -139,10 +139,10 @@ - #ifdef CONFIG_EVENT_TRACING - #define FTRACE_EVENTS() . = ALIGN(8); \ - VMLINUX_SYMBOL(__start_ftrace_events) = .; \ -- *(_ftrace_events) \ -+ KEEP(*(_ftrace_events)) \ - VMLINUX_SYMBOL(__stop_ftrace_events) = .; \ - VMLINUX_SYMBOL(__start_ftrace_enum_maps) = .; \ -- *(_ftrace_enum_map) \ -+ KEEP(*(_ftrace_enum_map)) \ - VMLINUX_SYMBOL(__stop_ftrace_enum_maps) = .; - #else - #define FTRACE_EVENTS() -@@ -163,7 +163,7 @@ - #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() -@@ -172,7 +172,7 @@ - #ifdef CONFIG_SERIAL_EARLYCON - #define EARLYCON_TABLE() . = ALIGN(8); \ - VMLINUX_SYMBOL(__earlycon_table) = .; \ -- *(__earlycon_table) \ -+ KEEP(*(__earlycon_table)) \ - VMLINUX_SYMBOL(__earlycon_table_end) = .; - #else - #define EARLYCON_TABLE() -@@ -185,8 +185,8 @@ - #define _OF_TABLE_1(name) \ - . = ALIGN(8); \ - VMLINUX_SYMBOL(__##name##_of_table) = .; \ -- *(__##name##_of_table) \ -- *(__##name##_of_table_end) -+ KEEP(*(__##name##_of_table)) \ -+ KEEP(*(__##name##_of_table_end)) - - #define CLKSRC_OF_TABLES() OF_TABLE(CONFIG_CLKSRC_OF, clksrc) - #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) -@@ -209,7 +209,7 @@ - #define KERNEL_DTB() \ - STRUCT_ALIGN(); \ - VMLINUX_SYMBOL(__dtb_start) = .; \ -- *(.dtb.init.rodata) \ -+ KEEP(*(.dtb.init.rodata)) \ - VMLINUX_SYMBOL(__dtb_end) = .; - - /* -@@ -227,16 +227,17 @@ - /* 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 -@@ -304,35 +305,35 @@ - /* 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) = .; \ - VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .; \ -- *(.pci_fixup_suspend_late) \ -+ KEEP(*(.pci_fixup_suspend_late)) \ - VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \ - } \ - \ - /* 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) = .; \ - } \ - \ -@@ -410,7 +411,7 @@ - \ - /* Kernel symbol table: strings */ \ - __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ -- KEEP(*(__ksymtab_strings)) \ -+ *(__ksymtab_strings) \ - } \ - \ - /* __*init sections */ \ -@@ -423,14 +424,14 @@ - /* 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) = .; \ -@@ -496,7 +497,7 @@ - #define ENTRY_TEXT \ - ALIGN_FUNCTION(); \ - VMLINUX_SYMBOL(__entry_text_start) = .; \ -- *(.entry.text) \ -+ KEEP(*(.entry.text)) \ - VMLINUX_SYMBOL(__entry_text_end) = .; - - #if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) -@@ -534,7 +535,7 @@ - . = 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) = .; \ - } - -@@ -550,9 +551,9 @@ - #ifdef CONFIG_CONSTRUCTORS - #define KERNEL_CTORS() . = ALIGN(8); \ - VMLINUX_SYMBOL(__ctors_start) = .; \ -- *(.ctors) \ -+ KEEP(*(.ctors)) \ - *(SORT(.init_array.*)) \ -- *(.init_array) \ -+ KEEP(*(.init_array)) \ - VMLINUX_SYMBOL(__ctors_end) = .; - #else - #define KERNEL_CTORS() -@@ -609,7 +610,7 @@ - #define SBSS(sbss_align) \ - . = ALIGN(sbss_align); \ - .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ -- *(.sbss) \ -+ *(.sbss .sbss.*) \ - *(.scommon) \ - } - -@@ -676,7 +677,7 @@ - . = 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 -@@ -688,7 +689,7 @@ - . = ALIGN(4); \ - .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ - VMLINUX_SYMBOL(__tracedata_start) = .; \ -- *(.tracedata) \ -+ KEEP(*(.tracedata)) \ - VMLINUX_SYMBOL(__tracedata_end) = .; \ - } - #else -@@ -705,7 +706,7 @@ - #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) \ |