From: Hagen Paul Pfeifer <hagen@jauu.net>
To: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@amacapital.net>,
Frederic Weisbecker <fweisbec@gmail.com>,
Alexei Starovoitov <ast@plumgrid.com>,
Will Drewry <wad@chromium.org>, Kees Cook <keescook@chromium.org>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: force inlining of atomic ops
Date: Tue, 12 May 2015 09:57:08 +0200 [thread overview]
Message-ID: <20150512075708.GA6969@virgo.local> (raw)
In-Reply-To: <1431080762-17797-1-git-send-email-dvlasenk@redhat.com>
* Denys Vlasenko | 2015-05-08 12:26:02 [+0200]:
[snip]
>With both gcc 4.7.2 and 4.9.2, sometimes gcc mysteriously doesn't inline
>This patch fixes this for x86 atomic ops via s/inline/__always_inline/.
>This decreases allyesconfig kernel by about 25k:
>
> text data bss dec hex filename
>82399481 22255416 20627456 125282353 777a831 vmlinux.before
>82375570 22255544 20627456 125258570 7774b4a vmlinux
atomic_inc, atomic_sub, atomic_add, atomic_sub_and_test, atomic_dec,
atomic_dec_and_test, atomic_add_return, __atomic_add_unless, atomic64_add,
atomic64_inc, atomic64_dec, atomic64_add_return
are already annotated with __always_inline. This patch will lead to merge
conflicts someone, Ingo?
See https://lkml.org/lkml/2015/4/20/637
Hagen
next prev parent reply other threads:[~2015-05-12 7:57 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 10:26 [PATCH] x86: force inlining of atomic ops Denys Vlasenko
2015-05-08 13:29 ` [tip:x86/asm] x86: Force " tip-bot for Denys Vlasenko
2015-05-08 15:03 ` [PATCH] x86: force " Steven Rostedt
2015-05-12 7:57 ` Hagen Paul Pfeifer [this message]
2015-05-12 9:22 ` Ingo Molnar
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