diff options
| author | Masahiro Yamada <[email protected]> | 2018-11-12 11:35:20 +0900 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2018-12-09 11:55:32 +0100 |
| commit | 63fea0af43af5beb3779fd2cae078d5d77b4bb11 (patch) | |
| tree | 7fee25f77d94a4dc8dc9ae85c4dc5941be047813 | |
| parent | 829889ac4a7d26858860c297e64051bd27ce8fbe (diff) | |
x86, powerpc: Remove -funit-at-a-time compiler option entirely
GCC 4.6 manual says:
-funit-at-a-time
This option is left for compatibility reasons. -funit-at-a-time has
no effect, while -fno-unit-at-a-time implies -fno-toplevel-reorder
and -fno-section-anchors. Enabled by default.
Remove it.
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Acked-by: Michael Ellerman <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: x86-ml <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
| -rw-r--r-- | arch/powerpc/Makefile | 4 | ||||
| -rw-r--r-- | arch/x86/Makefile | 4 | ||||
| -rw-r--r-- | arch/x86/Makefile.um | 5 |
3 files changed, 0 insertions, 13 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 8a2ce14d68d0..854199c9ab7e 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -228,10 +228,6 @@ KBUILD_CFLAGS += $(call cc-option,-mno-vsx) KBUILD_CFLAGS += $(call cc-option,-mno-spe) KBUILD_CFLAGS += $(call cc-option,-mspe=no) -# Enable unit-at-a-time mode when possible. It shrinks the -# kernel considerably. -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) - # FIXME: the module load should be taught about the additional relocs # generated by this. # revert to pre-gcc-4.4 behaviour of .eh_frame diff --git a/arch/x86/Makefile b/arch/x86/Makefile index f5d7f4134524..58d82e9dc36d 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -130,10 +130,6 @@ else KBUILD_CFLAGS += -mno-red-zone KBUILD_CFLAGS += -mcmodel=kernel - - # -funit-at-a-time shrinks the kernel .text considerably - # unfortunately it makes reading oopses harder. - KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) endif ifdef CONFIG_X86_X32 diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um index 577976b7d1f8..1db7913795f5 100644 --- a/arch/x86/Makefile.um +++ b/arch/x86/Makefile.um @@ -26,9 +26,6 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) # an unresolved reference. cflags-y += -ffreestanding -# gcc 4.3.0 needs -funit-at-a-time for extern inline functions. -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) - KBUILD_CFLAGS += $(cflags-y) else @@ -50,6 +47,4 @@ ELF_FORMAT := elf64-x86-64 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64 LINK-y += -m64 -# Do unit-at-a-time unconditionally on x86_64, following the host -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) endif |