Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754552Ab2KMBww (ORCPT ); Mon, 12 Nov 2012 20:52:52 -0500 Received: from mail-pa0-f46.google.com ([209.85.220.46]:64882 "EHLO mail-pa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753851Ab2KMBwt (ORCPT ); Mon, 12 Nov 2012 20:52:49 -0500 Message-ID: <50A1A7E8.4010802@gmail.com> Date: Tue, 13 Nov 2012 09:52:40 +0800 From: Shan Wei User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:16.0) Gecko/20121026 Thunderbird/16.0.2 MIME-Version: 1.0 To: dipankar@in.ibm.com, paulmck@linux.vnet.ibm.com, Kernel-Maillist , cl@linux-foundation.org, Shan Wei Subject: [PATCH v3 6/9] rcu: use __this_cpu_read helper instead of per_cpu_ptr(p, raw_smp_processor_id()) Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1049 Lines: 31 From: Shan Wei Signed-off-by: Shan Wei Acked-by: Christoph Lameter --- no changes vs v3,v2. --- kernel/rcutree.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 74df86b..441b945 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1960,7 +1960,7 @@ static void force_quiescent_state(struct rcu_state *rsp) struct rcu_node *rnp_old = NULL; /* Funnel through hierarchy to reduce memory contention. */ - rnp = per_cpu_ptr(rsp->rda, raw_smp_processor_id())->mynode; + rnp = __this_cpu_read(rsp->rda->mynode); for (; rnp != NULL; rnp = rnp->parent) { ret = (ACCESS_ONCE(rsp->gp_flags) & RCU_GP_FLAG_FQS) || !raw_spin_trylock(&rnp->fqslock); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/