From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752876AbbFZN2L (ORCPT ); Fri, 26 Jun 2015 09:28:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48956 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752749AbbFZN1m (ORCPT ); Fri, 26 Jun 2015 09:27:42 -0400 From: Vitaly Kuznetsov To: devel@linuxdriverproject.org Cc: "K. Y. Srinivasan" , Haiyang Zhang , linux-kernel@vger.kernel.org, Dexuan Cui , Ingo Molnar , "Paul E. McKenney" , "Rafael J. Wysocki" , Peter Zijlstra , Thomas Gleixner , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= Subject: [PATCH v6 1/3] cpu-hotplug: export cpu_hotplug_enable/cpu_hotplug_disable Date: Fri, 26 Jun 2015 15:27:32 +0200 Message-Id: <1435325254-14099-2-git-send-email-vkuznets@redhat.com> In-Reply-To: <1435325254-14099-1-git-send-email-vkuznets@redhat.com> References: <1435325254-14099-1-git-send-email-vkuznets@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hyper-V module needs to disable cpu hotplug (offlining) as there is no support from hypervisor side to reassing already opened event channels to a different CPU. Currently it is been done by altering smp_ops.cpu_disable but it is hackish. Signed-off-by: Vitaly Kuznetsov --- kernel/cpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/cpu.c b/kernel/cpu.c index 94bbe46..dc005e7 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -193,6 +193,7 @@ void cpu_hotplug_disable(void) cpu_hotplug_disabled = 1; cpu_maps_update_done(); } +EXPORT_SYMBOL_GPL(cpu_hotplug_disable); void cpu_hotplug_enable(void) { @@ -200,7 +201,7 @@ void cpu_hotplug_enable(void) cpu_hotplug_disabled = 0; cpu_maps_update_done(); } - +EXPORT_SYMBOL_GPL(cpu_hotplug_enable); #endif /* CONFIG_HOTPLUG_CPU */ /* Need to know about CPUs going up/down? */ -- 2.4.3