Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755710Ab3IYUrD (ORCPT ); Wed, 25 Sep 2013 16:47:03 -0400 Received: from g4t0017.houston.hp.com ([15.201.24.20]:28201 "EHLO g4t0017.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755362Ab3IYUrA (ORCPT ); Wed, 25 Sep 2013 16:47:00 -0400 Message-ID: <1380141899.14046.18.camel@misato.fc.hp.com> Subject: Re: [PATCH v2 4/4] hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock() From: Toshi Kani To: "Rafael J. Wysocki" Cc: "mingo@redhat.com" , "hpa@linux.intel.com" , "tglx@linutronix.de" , "gregkh@linuxfoundation.org" , "benh@kernel.crashing.org" , "linux-acpi@vger.kernel.org" , "x86@kernel.org" , "linuxppc-dev@lists.ozlabs.org" , "linux-kernel@vger.kernel.org" , "nfont@linux.vnet.ibm.com" , "fenghua.yu@intel.com" , "bp@suse.de" , "srivatsa.bhat@linux.vnet.ibm.com" , "isimatu.yasuaki@jp.fujitsu.com" Date: Wed, 25 Sep 2013 14:44:59 -0600 In-Reply-To: <7232059.d6LGFPRAoP@vostro.rjw.lan> References: <1377822129-4143-1-git-send-email-toshi.kani@hp.com> <1377822129-4143-5-git-send-email-toshi.kani@hp.com> <7232059.d6LGFPRAoP@vostro.rjw.lan> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.6.4 (3.6.4-3.fc18) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1506 Lines: 37 On Wed, 2013-09-25 at 08:27 +0000, Rafael J. Wysocki wrote: > Hi, > > On Thursday, August 29, 2013 06:22:09 PM Toshi Kani wrote: > > cpu_hotplug_driver_lock() serializes CPU online/offline operations > > when ARCH_CPU_PROBE_RELEASE is set. This lock interface is no longer > > necessary with the following reason: > > > > - lock_device_hotplug() now protects CPU online/offline operations, > > including the probe & release interfaces enabled by > > ARCH_CPU_PROBE_RELEASE. The use of cpu_hotplug_driver_lock() is > > redundant. > > - cpu_hotplug_driver_lock() is only valid when ARCH_CPU_PROBE_RELEASE > > is defined, which is misleading and is only enabled on powerpc. > > > > This patch removes the cpu_hotplug_driver_lock() interface. As > > a result, ARCH_CPU_PROBE_RELEASE only enables / disables the cpu > > probe & release interface as intended. There is no functional change > > in this patch. > > > > Signed-off-by: Toshi Kani > > Acked-by: Rafael J. Wysocki > > Reviewed-by: Nathan Fontenot > > Can you please rebase this patch on top of 3.12-rc2? It doesn't apply for > me any more. Yes, I will send this patch on top of 3.12-rc2. Thanks, -Toshi -- 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/