From patchwork Mon Mar 18 13:11:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 10857585 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8A1501390 for ; Mon, 18 Mar 2019 13:13:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7194A290AA for ; Mon, 18 Mar 2019 13:13:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6FB3929151; Mon, 18 Mar 2019 13:13:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 00C6529114 for ; Mon, 18 Mar 2019 13:13:45 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1h5s3g-0006aP-5R; Mon, 18 Mar 2019 13:12:04 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1h5s3f-0006Zs-3E for xen-devel@lists.xenproject.org; Mon, 18 Mar 2019 13:12:03 +0000 X-Inumbo-ID: 6aaf42f4-497f-11e9-863f-ff3271105ef5 Received: from mx1.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 6aaf42f4-497f-11e9-863f-ff3271105ef5; Mon, 18 Mar 2019 13:12:01 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D4A5BAF67; Mon, 18 Mar 2019 13:12:00 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org Date: Mon, 18 Mar 2019 14:11:53 +0100 Message-Id: <20190318131155.29450-5-jgross@suse.com> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20190318131155.29450-1-jgross@suse.com> References: <20190318131155.29450-1-jgross@suse.com> Subject: [Xen-devel] [PATCH 4/6] xen: don't free percpu areas during suspend X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , Andrew Cooper , Wei Liu , Jan Beulich , =?utf-8?q?Roger_Pau_Monn=C3=A9?= MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Instead of freeing percpu areas during suspend and allocating them again when resuming keep them. Only free an area in case a cpu didn't come up again when resuming. Signed-off-by: Juergen Gross Reviewed-by: Dario Faggioli --- xen/arch/x86/percpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/percpu.c b/xen/arch/x86/percpu.c index 8be4ebddf4..5ea14b6ec3 100644 --- a/xen/arch/x86/percpu.c +++ b/xen/arch/x86/percpu.c @@ -76,7 +76,8 @@ static int cpu_percpu_callback( break; case CPU_UP_CANCELED: case CPU_DEAD: - if ( !park_offline_cpus ) + case CPU_RESUME_FAILED: + if ( !park_offline_cpus && system_state != SYS_STATE_suspend ) free_percpu_area(cpu); break; case CPU_REMOVE: