From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 3EA2E2EDA for ; Fri, 18 Dec 2015 08:03:38 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP; 17 Dec 2015 23:03:37 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,445,1444719600"; d="scan'208";a="710218469" Received: from yliu-dev.sh.intel.com ([10.239.66.49]) by orsmga003.jf.intel.com with ESMTP; 17 Dec 2015 23:03:36 -0800 From: Yuanhan Liu To: dev@dpdk.org Date: Fri, 18 Dec 2015 15:04:06 +0800 Message-Id: <1450422247-6814-2-git-send-email-yuanhan.liu@linux.intel.com> X-Mailer: git-send-email 1.9.0 In-Reply-To: <1450422247-6814-1-git-send-email-yuanhan.liu@linux.intel.com> References: <1450422247-6814-1-git-send-email-yuanhan.liu@linux.intel.com> Subject: [dpdk-dev] [PATCH 2/3] vhost: simplify numa_realloc X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Dec 2015 07:03:38 -0000 We could first check if we need realloc vq or not, if so, reallocate it. We then do similar to vhost dev realloc. This could get rid of the tons of repeated "if (realloc_dev)" and "if (realloc_vq)" statements, therefore, makes code a bit more readable. Signed-off-by: Yuanhan Liu --- lib/librte_vhost/virtio-net.c | 77 ++++++++++++++++++++----------------------- 1 file changed, 36 insertions(+), 41 deletions(-) diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c index 2f83438..31ca4f7 100644 --- a/lib/librte_vhost/virtio-net.c +++ b/lib/librte_vhost/virtio-net.c @@ -441,64 +441,59 @@ static struct virtio_net* numa_realloc(struct virtio_net *dev, int index) { int oldnode, newnode; - struct virtio_net *old_dev, *new_dev = NULL; - struct vhost_virtqueue *old_vq, *new_vq = NULL; + struct virtio_net *old_dev; + struct vhost_virtqueue *old_vq, *vq; int ret; - int realloc_dev = 0, realloc_vq = 0; old_dev = dev; - old_vq = dev->virtqueue[index]; + vq = old_vq = dev->virtqueue[index]; - ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc, - MPOL_F_NODE | MPOL_F_ADDR); - ret = ret | get_mempolicy(&oldnode, NULL, 0, old_dev, + ret = get_mempolicy(&newnode, NULL, 0, old_vq->desc, MPOL_F_NODE | MPOL_F_ADDR); + + /* check if we need to reallocate vq */ + ret = get_mempolicy(&oldnode, NULL, 0, old_vq, MPOL_F_NODE | MPOL_F_ADDR); if (ret) { RTE_LOG(ERR, VHOST_CONFIG, - "Unable to get vring desc or dev numa information.\n"); + "Unable to get vq numa information.\n"); return dev; } - if (oldnode != newnode) - realloc_dev = 1; + if (oldnode != newnode) { + RTE_LOG(INFO, VHOST_CONFIG, + "reallocate vq from %d to %d node\n", oldnode, newnode); + vq = rte_malloc_socket(NULL, sizeof(*vq), 0, newnode); + if (!vq) + return dev; + + memcpy(vq, old_vq, sizeof(*vq)); + rte_free(old_vq); + } - ret = get_mempolicy(&oldnode, NULL, 0, old_vq, - MPOL_F_NODE | MPOL_F_ADDR); + /* check if we need to reallocate dev */ + ret = get_mempolicy(&oldnode, NULL, 0, old_dev, MPOL_F_NODE | MPOL_F_ADDR); if (ret) { RTE_LOG(ERR, VHOST_CONFIG, - "Unable to get vq numa information.\n"); - return dev; + "Unable to get vring desc or dev numa information.\n"); + goto out; } - if (oldnode != newnode) - realloc_vq = 1; - - if (realloc_dev == 0 && realloc_vq == 0) - return dev; - - if (realloc_dev) - new_dev = rte_malloc_socket(NULL, - sizeof(struct virtio_net), 0, newnode); - if (realloc_vq) - new_vq = rte_malloc_socket(NULL, - sizeof(struct vhost_virtqueue), 0, newnode); - if (!new_dev && !new_vq) - return dev; - - if (realloc_vq) - memcpy(new_vq, old_vq, sizeof(*new_vq)); - if (realloc_dev) - memcpy(new_dev, old_dev, sizeof(*new_dev)); + if (oldnode != newnode) { + RTE_LOG(INFO, VHOST_CONFIG, + "reallocate dev from %d to %d node\n", oldnode, newnode); + dev = rte_malloc_socket(NULL, sizeof(*dev), 0, newnode); + if (!dev) { + dev = old_dev; + goto out; + } - (new_dev ? new_dev : old_dev)->virtqueue[index] = - new_vq ? new_vq : old_vq; - if (realloc_vq) - rte_free(old_vq); - if (realloc_dev) { + memcpy(dev, old_dev, sizeof(*dev)); rte_free(old_dev); - - vhost_devices[new_dev->device_fh] = new_dev; } - return realloc_dev ? new_dev: dev; +out: + dev->virtqueue[index] = vq; + vhost_devices[dev->device_fh] = dev; + + return dev; } #else static struct virtio_net* -- 1.9.0