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-rw-r--r--target/linux/generic/hack-4.14/220-gc_sections.patch258
1 files changed, 0 insertions, 258 deletions
diff --git a/target/linux/generic/hack-4.14/220-gc_sections.patch b/target/linux/generic/hack-4.14/220-gc_sections.patch
deleted file mode 100644
index 6a4475fc6e..0000000000
--- a/target/linux/generic/hack-4.14/220-gc_sections.patch
+++ /dev/null
@@ -1,258 +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
-@@ -272,6 +272,11 @@ else
- scripts/Kbuild.include: ;
- include scripts/Kbuild.include
-
-+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)
-@@ -779,11 +784,6 @@ ifdef CONFIG_DEBUG_SECTION_MISMATCH
- KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
- endif
-
--ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
--KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)
--KBUILD_CFLAGS += $(call cc-option,-fdata-sections,)
--endif
--
- # arch Makefile may override CC so keep this after arch Makefile is included
- NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
- CHECKFLAGS += $(NOSTDINC_FLAGS)
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -91,6 +91,7 @@ config ARM
- select HAVE_UID16
- select HAVE_VIRT_CPU_ACCOUNTING_GEN
- select IRQ_FORCED_THREADING
-+ select LD_DEAD_CODE_DATA_ELIMINATION
- select MODULES_USE_ELF_REL
- select NO_BOOTMEM
- select OF_EARLY_FLATTREE if OF
---- a/arch/arm/boot/compressed/Makefile
-+++ b/arch/arm/boot/compressed/Makefile
-@@ -103,6 +103,7 @@ ifeq ($(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
-@@ -18,7 +18,7 @@
- #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 \
-@@ -29,11 +29,11 @@
- #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
-@@ -106,7 +106,7 @@ SECTIONS
- _stext = .; /* Text and read-only data */
- IDMAP_TEXT
- __exception_text_start = .;
-- *(.exception.text)
-+ KEEP(*(.exception.text))
- __exception_text_end = .;
- IRQENTRY_TEXT
- SOFTIRQENTRY_TEXT
-@@ -135,7 +135,7 @@ SECTIONS
- __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
- __start___ex_table = .;
- #ifdef CONFIG_MMU
-- *(__ex_table)
-+ KEEP(*(__ex_table))
- #endif
- __stop___ex_table = .;
- }
-@@ -147,12 +147,12 @@ 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
-@@ -172,14 +172,14 @@ 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 = .;
-@@ -195,24 +195,24 @@ 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
-@@ -40,6 +40,7 @@ config MIPS
- select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
- select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
- select HAVE_CC_STACKPROTECTOR
-+ select LD_DEAD_CODE_DATA_ELIMINATION
- select HAVE_CONTEXT_TRACKING
- select HAVE_COPY_THREAD_TLS
- select HAVE_C_RECORDMCOUNT
---- a/arch/mips/kernel/vmlinux.lds.S
-+++ b/arch/mips/kernel/vmlinux.lds.S
-@@ -72,7 +72,7 @@ SECTIONS
- /* Exception table for data bus errors */
- __dbe_table : {
- __start___dbe_table = .;
-- *(__dbe_table)
-+ KEEP(*(__dbe_table))
- __stop___dbe_table = .;
- }
-
-@@ -123,7 +123,7 @@ 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()
-@@ -237,7 +237,8 @@
- LIKELY_PROFILE() \
- BRANCH_PROFILE() \
- TRACE_PRINTKS() \
-- TRACEPOINT_STR()
-+ TRACEPOINT_STR() \
-+ *(.data.[a-zA-Z_]*)
-
- /*
- * Data section helpers
-@@ -497,7 +498,7 @@
- #define ENTRY_TEXT \
- ALIGN_FUNCTION(); \
- VMLINUX_SYMBOL(__entry_text_start) = .; \
-- *(.entry.text) \
-+ KEEP(*(.entry.text)) \
- VMLINUX_SYMBOL(__entry_text_end) = .;
-
- #define IRQENTRY_TEXT \
-@@ -604,7 +605,7 @@
- . = ALIGN(sbss_align); \
- .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
- *(.dynsbss) \
-- *(.sbss) \
-+ *(.sbss .sbss.*) \
- *(.scommon) \
- }
-
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