Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753512AbaKHXYg (ORCPT ); Sat, 8 Nov 2014 18:24:36 -0500 Received: from mail-ie0-f176.google.com ([209.85.223.176]:59667 "EHLO mail-ie0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752682AbaKHXYe (ORCPT ); Sat, 8 Nov 2014 18:24:34 -0500 MIME-Version: 1.0 In-Reply-To: <20141108221347.GF4901@linux.vnet.ibm.com> References: <20141108094717.9388.34638.stgit@zurg> <20141108221347.GF4901@linux.vnet.ibm.com> Date: Sun, 9 Nov 2014 03:24:34 +0400 Message-ID: Subject: Re: [PATCH] ACPI/osl: speedup grace period in acpi_os_map_cleanup From: Alexander Monakov To: paulmck@linux.vnet.ibm.com Cc: Konstantin Khlebnikov , linux-acpi@vger.kernel.org, "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, Len Brown , Tom Boshoven , x86@kernel.org, Josh Triplett Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 9, 2014 at 1:13 AM, Paul E. McKenney wrote: > > Did anyone try replacing the synchronize_rcu() with > synchronize_rcu_expedited()? That should provide substantial speedups > over synchronize_rcu(). I've just briefly tested it on my laptop, and it also helps to avoid the issue. Alexander -- 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/