From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754556Ab0IDRWQ (ORCPT ); Sat, 4 Sep 2010 13:22:16 -0400 Received: from mail-gx0-f174.google.com ([209.85.161.174]:37676 "EHLO mail-gx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754538Ab0IDRWN (ORCPT ); Sat, 4 Sep 2010 13:22:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=ezfmDkgrEuEDx1zCGyEvr9oIAOwvCqz5fIyAShAiI9lvjMcpGGj5dp4q0AUcXuVprd smz2Ko2Q3sA96jMkau7DMHAjTiMeZe/1ujvuDfRUaxa1O9FNq4/Yx8Q5KxWFpP11Sk5R hj2VIhKe4JfmvSDQcvcYI23XLrCNf58VH1kV4= From: Brian Gerst To: tj@kernel.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org Subject: PATCH [0/2] percpu: Local cpu pointer optimizations Date: Sat, 4 Sep 2010 13:21:09 -0400 Message-Id: <1283620871-818-1-git-send-email-brgerst@gmail.com> X-Mailer: git-send-email 1.7.2.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 | 9 +++++++++ include/asm-generic/percpu.h | 14 +++++++++----- 2 files changed, 18 insertions(+), 5 deletions(-)