From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754582Ab0IDRWV (ORCPT ); Sat, 4 Sep 2010 13:22:21 -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 S1754538Ab0IDRWT (ORCPT ); Sat, 4 Sep 2010 13:22:19 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=XM3DuKwMDv7huR2giKe8SNWiZak2QNAew243UPRad5e2RtS7veEZ7hgEwmnR+60deq UjpZXrlO4EhDPOgQLMoHxUE38KHf7wbj7prJCfgkJxVfYSYiCQJONiaYlRS9fYQe1GEZ Y5Pgjn6MlDRafRRP6M7GWMywV/PxPQIIz+97E= From: Brian Gerst To: tj@kernel.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] percpu: Optimize __get_cpu_var() Date: Sat, 4 Sep 2010 13:21:11 -0400 Message-Id: <1283620871-818-3-git-send-email-brgerst@gmail.com> X-Mailer: git-send-email 1.7.2.2 In-Reply-To: <1283620871-818-1-git-send-email-brgerst@gmail.com> References: <1283620871-818-1-git-send-email-brgerst@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Redefine __get_cpu_var() using this_cpu_ptr() which can be arch-optimized. Signed-off-by: Brian Gerst --- include/asm-generic/percpu.h | 7 +++---- 1 files changed, 3 insertions(+), 4 deletions(-) diff --git a/include/asm-generic/percpu.h b/include/asm-generic/percpu.h index 5820fcb..c6e2c2d 100644 --- a/include/asm-generic/percpu.h +++ b/include/asm-generic/percpu.h @@ -55,10 +55,6 @@ extern unsigned long __per_cpu_offset[NR_CPUS]; */ #define per_cpu(var, cpu) \ (*SHIFT_PERCPU_PTR(&(var), per_cpu_offset(cpu))) -#define __get_cpu_var(var) \ - (*SHIFT_PERCPU_PTR(&(var), my_cpu_offset)) -#define __raw_get_cpu_var(var) \ - (*SHIFT_PERCPU_PTR(&(var), __my_cpu_offset)) #ifndef __this_cpu_ptr #define __this_cpu_ptr(ptr) SHIFT_PERCPU_PTR(ptr, __my_cpu_offset) @@ -69,6 +65,9 @@ extern unsigned long __per_cpu_offset[NR_CPUS]; #define this_cpu_ptr(ptr) __this_cpu_ptr(ptr) #endif +#define __get_cpu_var(var) (*this_cpu_ptr(&(var))) +#define __raw_get_cpu_var(var) (*__this_cpu_ptr(&(var))) + #ifdef CONFIG_HAVE_SETUP_PER_CPU_AREA extern void setup_per_cpu_areas(void); #endif -- 1.7.2.2