From: Michael Ellerman <mpe@ellerman.id.au>
To: Masahiro Yamada <yamada.masahiro@socionext.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org
Cc: Richard Weinberger <richard@sigma-star.at>,
linuxppc-dev@lists.ozlabs.org,
Masahiro Yamada <yamada.masahiro@socionext.com>,
"H. Peter Anvin" <hpa@zytor.com>, Borislav Petkov <bp@alien8.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH 2/2] x86, powerpc: remove -funit-at-a-time compiler option entirely
Date: Mon, 12 Nov 2018 22:22:46 +1100 [thread overview]
Message-ID: <87k1lia6bd.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <1541990120-9643-3-git-send-email-yamada.masahiro@socionext.com>
Masahiro Yamada <yamada.masahiro@socionext.com> writes:
> 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.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
>
> arch/powerpc/Makefile | 4 ----
> arch/x86/Makefile | 4 ----
> arch/x86/Makefile.um | 5 -----
> 3 files changed, 13 deletions(-)
>
> diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
> index 8a2ce14..854199c 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)
> -
Thanks for cleaning it up.
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
cheers
next prev parent reply other threads:[~2018-11-12 11:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 2:35 [PATCH 0/2] Remove -fno-unit-at-a-time and -funit-at-a-time compiler flags entirely Masahiro Yamada
2018-11-12 2:35 ` [PATCH 1/2] um: remove -fno-unit-at-a-time workaround for pre-4.0 GCC Masahiro Yamada
2018-11-13 9:47 ` Richard Weinberger
2018-12-08 6:35 ` Masahiro Yamada
2018-12-08 8:54 ` Richard Weinberger
2018-12-08 19:18 ` Masahiro Yamada
2018-12-09 11:06 ` [tip:x86/build] x86/um: Remove " tip-bot for Masahiro Yamada
2018-11-12 2:35 ` [PATCH 2/2] x86, powerpc: remove -funit-at-a-time compiler option entirely Masahiro Yamada
2018-11-12 3:01 ` Ingo Molnar
2018-11-12 11:22 ` Michael Ellerman [this message]
2018-12-08 6:36 ` Masahiro Yamada
2018-12-08 11:33 ` Borislav Petkov
2018-12-08 19:17 ` Masahiro Yamada
2018-12-09 11:07 ` [tip:x86/build] x86, powerpc: Remove " tip-bot for Masahiro Yamada
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