From patchwork Fri Sep 30 02:19:06 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "lan,Tianyu" X-Patchwork-Id: 9357395 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 583146086A for ; Fri, 30 Sep 2016 02:22:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3E62129D12 for ; Fri, 30 Sep 2016 02:22:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3134F29D11; Fri, 30 Sep 2016 02:22:11 +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=-4.2 required=2.0 tests=BAYES_00, 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 AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A410529D0D for ; Fri, 30 Sep 2016 02:22:10 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bpnQg-0007RO-IW; Fri, 30 Sep 2016 02:20:02 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bpnQf-0007MX-E7 for xen-devel@lists.xen.org; Fri, 30 Sep 2016 02:20:01 +0000 Received: from [85.158.137.68] by server-6.bemta-3.messagelabs.com id 01/BB-28813-0DBCDE75; Fri, 30 Sep 2016 02:20:00 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrFLMWRWlGSWpSXmKPExsXS1taRonvh9Nt wg77PnBZLPi5mcWD0OLr7N1MAYxRrZl5SfkUCa8aE7bcYCz6wVvz/dpOtgfEmSxcjJ4eQQIXE 04UzmUFsCQFeiSPLZrBC2H4Sf6a1ANlcQDX9jBJd/WfBEmwC6hInFk9kBLFFBGwkPj6eywZSx CxwnVGi6dppNpCEsECAxIn23WA2i4CqRO/v/2ANvAIuEocPTwLaxgG0QUFiziQbkDCngKtE68 nr7BAHuUiceDyLZQIj7wJGhlWMGsWpRWWpRbpGxnpJRZnpGSW5iZk5uoYGxnq5qcXFiempOYl JxXrJ+bmbGIHhUM/AwLiDsW+v3yFGSQ4mJVFe2aNvw4X4kvJTKjMSizPii0pzUosPMcpwcChJ 8O4+BZQTLEpNT61Iy8wBBiZMWoKDR0mEdxVImre4IDG3ODMdInWKUZdjwY/ba5mEWPLy81Klx HmngBQJgBRllObBjYBFySVGWSlhXkYGBgYhnoLUotzMElT5V4ziHIxKwrz/QabwZOaVwG16BX QEE9AR+UffgBxRkoiQkmpg9Nr1NHXblcjHZmw5nzIT/36/kzp1sZJv4Ra+voTC+M0zu/ZuZuF bsOHQJbf8i5WZ9rfO7vksumlqacCJDdvPeV7t7va5l9Ny9aA668VW5n5We7W5vizxEg8kFSuC lBr1FW73z/3AsPW6xIuPRYUmpoGTfP6uiZ9mtFjRTuZdjUTNY+0nbddSlFiKMxINtZiLihMBI naWPI0CAAA= X-Env-Sender: tianyu.lan@intel.com X-Msg-Ref: server-4.tower-31.messagelabs.com!1475201997!8244443!1 X-Originating-IP: [134.134.136.100] X-SpamReason: No, hits=0.5 required=7.0 tests=BODY_RANDOM_LONG X-StarScan-Received: X-StarScan-Version: 8.84; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9674 invoked from network); 30 Sep 2016 02:19:59 -0000 Received: from mga07.intel.com (HELO mga07.intel.com) (134.134.136.100) by server-4.tower-31.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 30 Sep 2016 02:19:59 -0000 Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga105.jf.intel.com with ESMTP; 29 Sep 2016 19:19:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,418,1473145200"; d="scan'208";a="15260047" Received: from lantianyu-ws.sh.intel.com (HELO localhost) ([10.239.159.159]) by orsmga004.jf.intel.com with ESMTP; 29 Sep 2016 19:19:54 -0700 From: Lan Tianyu To: xen-devel@lists.xenproject.org, xen-devel@lists.xen.org Date: Fri, 30 Sep 2016 10:19:06 +0800 Message-Id: <1475201946-31898-3-git-send-email-tianyu.lan@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1475201946-31898-1-git-send-email-tianyu.lan@intel.com> References: <1475201946-31898-1-git-send-email-tianyu.lan@intel.com> Cc: Lan Tianyu , sstabellini@kernel.org, wei.liu2@citrix.com, George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, jbeulich@suse.com Subject: [Xen-devel] [Resend PATCH 2/2] Xen/timer: Process softirq during dumping timer info X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Dumping timer info may run for a long time on the huge machine with a lot of physical cpus. To avoid triggering NMI watchdog, add process_pending_softirqs() in the loop of dumping timer info. Signed-off-by: Lan Tianyu Reviewed-by: Konrad Rzeszutek Wilk --- xen/common/timer.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/xen/common/timer.c b/xen/common/timer.c index 29a60a9..ab6bca0 100644 --- a/xen/common/timer.c +++ b/xen/common/timer.c @@ -530,6 +530,7 @@ static void dump_timerq(unsigned char key) { ts = &per_cpu(timers, i); + process_pending_softirqs(); printk("CPU%02d:\n", i); spin_lock_irqsave(&ts->lock, flags); for ( j = 1; j <= GET_HEAP_SIZE(ts->heap); j++ )