From c2f0b54f10b12620c57f6e31233589b704a00ed5 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Thu, 14 Sep 2017 20:40:04 +0900 Subject: arm64: remove unneeded copy to init_utsname()->machine As you see in init/version.c, init_uts_ns.name.machine is initially set to UTS_MACHINE. There is no point to copy the same string. I dug the git history to figure out why this line is here. My best guess is like this: - This line has been around here since the initial support of arm64 by commit 9703d9d7f77c ("arm64: Kernel booting and initialisation"). If ARCH (=arm64) and UTS_MACHINE (=aarch64) do not match, arch/$(ARCH)/Makefile is supposed to override UTS_MACHINE, but the initial version of arch/arm64/Makefile missed to do that. Instead, the boot code copied "aarch64" to init_utsname()->machine. - Commit 94ed1f2cb5d4 ("arm64: setup: report ELF_PLATFORM as the machine for utsname") replaced "aarch64" with ELF_PLATFORM to make "uname" to reflect the endianness. - ELF_PLATFORM does not help to provide the UTS machine name to rpm target, so commit cfa88c79462d ("arm64: Set UTS_MACHINE in the Makefile") fixed it. The commit simply replaced ELF_PLATFORM with UTS_MACHINE, but missed the fact the string copy itself is no longer needed. Signed-off-by: Masahiro Yamada Signed-off-by: Will Deacon --- arch/arm64/kernel/Makefile | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/arm64/kernel/Makefile') diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index f2b4e816b6de..29764d797187 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -10,8 +10,6 @@ CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_insn.o = -pg CFLAGS_REMOVE_return_address.o = -pg -CFLAGS_setup.o = -DUTS_MACHINE='"$(UTS_MACHINE)"' - # Object file lists. arm64-obj-y := debug-monitors.o entry.o irq.o fpsimd.o \ entry-fpsimd.o process.o ptrace.o setup.o signal.o \ -- cgit v1.2.3-59-g8ed1b