From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicholas Piggin Subject: [PATCH 5/5] powerpc/64: use linker dce Date: Fri, 5 Aug 2016 22:12:03 +1000 Message-ID: <1470399123-8455-6-git-send-email-npiggin@gmail.com> References: <1470399123-8455-1-git-send-email-npiggin@gmail.com> Return-path: Received: from mail-pa0-f65.google.com ([209.85.220.65]:33069 "EHLO mail-pa0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161250AbcHEMNH (ORCPT ); Fri, 5 Aug 2016 08:13:07 -0400 In-Reply-To: <1470399123-8455-1-git-send-email-npiggin@gmail.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: linux-kbuild@vger.kernel.org Cc: Nicholas Piggin , linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Stephen Rothwell , Arnd Bergmann , Nicolas Pitre , Segher Boessenkool , Alan Modra --- 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