[PATCH 5/5] powerpc/64: use linker dce
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2016-08-05 12:13:10
Also in:
linux-arch, linux-kbuild
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
--- arch/powerpc/kernel/Makefile | 3 +++ arch/powerpc/kernel/vmlinux.lds.S | 2 +- arch/powerpc/platforms/Kconfig.cputype | 1 + 3 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 2da380f..b356e59 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile@@ -4,7 +4,10 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' +ccflags-y += -fno-function-sections -fno-data-sections + subdir-ccflags-$(CONFIG_PPC_WERROR) := -Werror +subdir-ccflags-y += -fno-function-sections -fno-data-sections ifeq ($(CONFIG_PPC64),y) CFLAGS_prom_init.o += $(NO_MINIMAL_TOC)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 2dd91f7..c157b8d 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S@@ -50,7 +50,7 @@ SECTIONS HEAD_TEXT _text = .; /* careful! __ftr_alt_* sections need to be close to .text */ - *(.text .fixup __ftr_alt_* .ref.text) + *(.text .text.* .fixup __ftr_alt_* .ref.text) SCHED_TEXT LOCK_TEXT KPROBES_TEXT
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 3c77091..6afeb9d 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype@@ -3,6 +3,7 @@ config PPC64 default n select HAVE_VIRT_CPU_ACCOUNTING select THIN_ARCHIVES + select LINKER_DCE select ZLIB_DEFLATE help This option selects whether a 32-bit or a 64-bit kernel
--
2.8.1