linux-kernel - PATCH [0/2] percpu: Local cpu pointer optimizations

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Message-Id: <1283859670-6687-1-git-send-email-brgerst@gmail.com>
Date:	Tue,  7 Sep 2010 07:41:08 -0400
From:	Brian Gerst <brgerst@...il.com>
To:	tj@...nel.org
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: PATCH [0/2] percpu: Local cpu pointer optimizations

This patch set allows arches to provide an optimized way of shifting
a per-cpu pointer for the current cpu.

On an x86-32 defconfig build, these patches save 1304 bytes of text.

  text    data     bss     dec     hex filename
7298335  717480 1374104 9389919  8f475f vmlinux.orig
7297283  717480 1374104 9388867  8f4343 vmlinux.1
7297031  717480 1374104 9388615  8f4247 vmlinux.2

[PATCH 1/2] x86, percpu: Optimize this_cpu_ptr
[PATCH 2/2] percpu: Optimize __get_cpu_var()

 arch/x86/include/asm/percpu.h |   11 +++++++++++
 include/asm-generic/percpu.h  |   14 +++++++++-----
 2 files changed, 20 insertions(+), 5 deletions(-)

v2: Added comments
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