From patchwork Thu May 11 06:04:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Gao X-Patchwork-Id: 9720983 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 7E853601E7 for ; Thu, 11 May 2017 06:05:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7815C28637 for ; Thu, 11 May 2017 06:05:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6B5A82866C; Thu, 11 May 2017 06:05:35 +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 E942928637 for ; Thu, 11 May 2017 06:05:34 +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 1d8hBc-0007gU-G3; Thu, 11 May 2017 06:02:52 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d8hBa-0007fe-Nw for xen-devel@lists.xen.org; Thu, 11 May 2017 06:02:50 +0000 Received: from [85.158.143.35] by server-11.bemta-6.messagelabs.com id 93/6B-03587-A8EF3195; Thu, 11 May 2017 06:02:50 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrHLMWRWlGSWpSXmKPExsVywNwkQrfrn3C kQeduRoslHxezODB6HN39mymAMYo1My8pvyKBNePRoQ7GglPcFbMazrA3MC7h7GLk4hASmM4o ce3KdMYuRk4OCQFeiSPLZrBC2P4Svc232UFsIYFyiSPHp7CA2GwCyhIXv/aygdgiAtIS1z5fZ gQZxCzwkEni2PfVYM3CAo4SJ2/eYgaxWQRUJRacWcwEYvMKOEnM+L8IapmCxJSH78FqOAWcJT avfcIKscxJ4srFFtYJjLwLGBlWMaoXpxaVpRbpGuslFWWmZ5TkJmbm6BoamOnlphYXJ6an5iQ mFesl5+duYgSGAwMQ7GDs+Od0iFGSg0lJlLf9j3CkEF9SfkplRmJxRnxRaU5q8SFGGQ4OJQne HyA5waLU9NSKtMwcYGDCpCU4eJREeLeBpHmLCxJzizPTIVKnGBWlxHnN/gIlBEASGaV5cG2wa LjEKCslzMsIdIgQT0FqUW5mCar8K0ZxDkYlYd7vION5MvNK4Ka/AlrMBLS4H2JxSSJCSqqBkU l3+cKEJ2of2k9LKq+z4bFcZTvh9LLppSkfFhVKSr5ZwVC8Ymkfp6L4zkNiCxlWvdk0yaBa+aX 7uivhr9VOBAbW13zhcy2ffssr3bxfMWBP3D/3xb+8D+oXbwuVfKIktYbdVTWrryjZkSU8WP9E Seqr01PO2K9/Hajz1uDqy7cBIf4zEhaxKLEUZyQaajEXFScCAAgJXI2BAgAA X-Env-Sender: chao.gao@intel.com X-Msg-Ref: server-9.tower-21.messagelabs.com!1494482564!67706057!3 X-Originating-IP: [192.55.52.88] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogMTkyLjU1LjUyLjg4ID0+IDM3NDcyNQ==\n X-StarScan-Received: X-StarScan-Version: 9.4.12; banners=-,-,- X-VirusChecked: Checked Received: (qmail 910 invoked from network); 11 May 2017 06:02:49 -0000 Received: from mga01.intel.com (HELO mga01.intel.com) (192.55.52.88) by server-9.tower-21.messagelabs.com with DHE-RSA-AES256-GCM-SHA384 encrypted SMTP; 11 May 2017 06:02:49 -0000 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 10 May 2017 23:02:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.38,322,1491289200"; d="scan'208";a="259765499" Received: from skl-2s3.sh.intel.com ([10.239.48.51]) by fmsmga004.fm.intel.com with ESMTP; 10 May 2017 23:02:47 -0700 From: Chao Gao To: xen-devel@lists.xen.org Date: Thu, 11 May 2017 14:04:09 +0800 Message-Id: <1494482652-42356-3-git-send-email-chao.gao@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1494482652-42356-1-git-send-email-chao.gao@intel.com> References: <1494482652-42356-1-git-send-email-chao.gao@intel.com> Cc: Stefano Stabellini , Wei Liu , George Dunlap , Andrew Cooper , Ian Jackson , Tim Deegan , Jan Beulich , Chao Gao Subject: [Xen-devel] [PATCH v2 2/5] vcpu: track hvm vcpu number on the system 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 This number is used to calculate how many hvm vcpu on a pcpu on average. Signed-off-by: Chao Gao --- xen/common/domain.c | 8 ++++++++ xen/include/xen/sched.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/xen/common/domain.c b/xen/common/domain.c index b22aacc..d433d9e 100644 --- a/xen/common/domain.c +++ b/xen/common/domain.c @@ -71,6 +71,9 @@ struct vcpu *idle_vcpu[NR_CPUS] __read_mostly; vcpu_info_t dummy_vcpu_info; +/* how many hvm vcpu on this system? */ +atomic_t num_hvm_vcpus; + static void __domain_finalise_shutdown(struct domain *d) { struct vcpu *v; @@ -193,6 +196,9 @@ struct vcpu *alloc_vcpu( if ( !is_idle_domain(d) ) domain_update_node_affinity(d); + if ( is_hvm_domain(d) ) + atomic_inc(&num_hvm_vcpus); + return v; } @@ -803,6 +809,8 @@ static void complete_domain_destroy(struct rcu_head *head) vcpu_destroy(v); sched_destroy_vcpu(v); destroy_waitqueue_vcpu(v); + if ( is_hvm_domain(d) ) + atomic_dec(&num_hvm_vcpus); } grant_table_destroy(d); diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h index 1127ca9..5fb492d 100644 --- a/xen/include/xen/sched.h +++ b/xen/include/xen/sched.h @@ -139,6 +139,8 @@ void evtchn_destroy_final(struct domain *d); /* from complete_domain_destroy */ struct waitqueue_vcpu; +extern atomic_t num_hvm_vcpus; + struct vcpu { int vcpu_id;