From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760240AbZC0SFU (ORCPT ); Fri, 27 Mar 2009 14:05:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751478AbZC0SCv (ORCPT ); Fri, 27 Mar 2009 14:02:51 -0400 Received: from gw.goop.org ([64.81.55.164]:58160 "EHLO abulafia.goop.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753600AbZC0SCs (ORCPT ); Fri, 27 Mar 2009 14:02:48 -0400 From: Jeremy Fitzhardinge To: Andrew Morton Cc: the arch/x86 maintainers , Ingo Molnar , Linux Kernel Mailing List , Peter Zijlstra , Nick Piggin , Thomas Gleixner , Jeremy Fitzhardinge Subject: [PATCH 8/8] x86/paravirt: use percpu_ rather than __get_cpu_var Date: Fri, 27 Mar 2009 11:02:43 -0700 Message-Id: <1238176963-21093-9-git-send-email-jeremy@goop.org> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1238176963-21093-1-git-send-email-jeremy@goop.org> References: <1238176963-21093-1-git-send-email-jeremy@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jeremy Fitzhardinge Impact: minor optimisation percpu_read/write is a slightly more direct way of getting to percpu data. Signed-off-by: Jeremy Fitzhardinge --- arch/x86/kernel/paravirt.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index c59a9d3..aa34423 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -246,16 +246,16 @@ static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LA static inline void enter_lazy(enum paravirt_lazy_mode mode) { - BUG_ON(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); + BUG_ON(percpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE); - __get_cpu_var(paravirt_lazy_mode) = mode; + percpu_write(paravirt_lazy_mode, mode); } static void leave_lazy(enum paravirt_lazy_mode mode) { - BUG_ON(__get_cpu_var(paravirt_lazy_mode) != mode); + BUG_ON(percpu_read(paravirt_lazy_mode) != mode); - __get_cpu_var(paravirt_lazy_mode) = PARAVIRT_LAZY_NONE; + percpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE); } void paravirt_enter_lazy_mmu(void) @@ -294,7 +294,7 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void) if (in_interrupt()) return PARAVIRT_LAZY_NONE; - return __get_cpu_var(paravirt_lazy_mode); + return percpu_read(paravirt_lazy_mode); } void arch_flush_lazy_mmu_mode(void) -- 1.6.0.6