From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756529Ab0IGLle (ORCPT ); Tue, 7 Sep 2010 07:41:34 -0400 Received: from mail-yx0-f174.google.com ([209.85.213.174]:64336 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751795Ab0IGLl2 (ORCPT ); Tue, 7 Sep 2010 07:41:28 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; b=KeEsnnOnXSMp1I2PAc+lbx/8OFrI2MiClrn46C4H0dUfHp9Y8FSc3C3KMxWcW7p9Sa Y7jTbo+go6XwGO/QU4YK/6oblsnNr4LYe+ro2NGAl18uUsOM4pywu9Fz8rargzGtJ5Gl RuqaMCUgSFxnDtk4LrbRUO2Cr8TCkXk+3mbMo= 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: Tue, 7 Sep 2010 07:41:08 -0400 Message-Id: <1283859670-6687-1-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 | 11 +++++++++++ include/asm-generic/percpu.h | 14 +++++++++----- 2 files changed, 20 insertions(+), 5 deletions(-) v2: Added comments