{"id":810792,"url":"http://patchwork.ozlabs.org/api/1.2/patches/810792/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/patch/20170906205306.10541-3-sthemmin@microsoft.com/","project":{"id":7,"url":"http://patchwork.ozlabs.org/api/1.2/projects/7/?format=json","name":"Linux network development","link_name":"netdev","list_id":"netdev.vger.kernel.org","list_email":"netdev@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170906205306.10541-3-sthemmin@microsoft.com>","list_archive_url":null,"date":"2017-09-06T20:53:06","name":"[v2,net-next,2/2] hv_netvsc: avoid unnecessary wakeups on subchannel creation","commit_ref":null,"pull_url":null,"state":"accepted","archived":true,"hash":"8a2faae788b987c9a9d7e5fbbeafa26d9eed0a55","submitter":{"id":21389,"url":"http://patchwork.ozlabs.org/api/1.2/people/21389/?format=json","name":"Stephen Hemminger","email":"stephen@networkplumber.org"},"delegate":{"id":34,"url":"http://patchwork.ozlabs.org/api/1.2/users/34/?format=json","username":"davem","first_name":"David","last_name":"Miller","email":"davem@davemloft.net"},"mbox":"http://patchwork.ozlabs.org/project/netdev/patch/20170906205306.10541-3-sthemmin@microsoft.com/mbox/","series":[{"id":1878,"url":"http://patchwork.ozlabs.org/api/1.2/series/1878/?format=json","web_url":"http://patchwork.ozlabs.org/project/netdev/list/?series=1878","date":"2017-09-06T20:53:06","name":"hv_netvsc: sub channel initialization fixes","version":2,"mbox":"http://patchwork.ozlabs.org/series/1878/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/810792/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/810792/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"patchwork-incoming@ozlabs.org","Delivered-To":"patchwork-incoming@ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=netdev-owner@vger.kernel.org;\n\treceiver=)","ozlabs.org; dkim=pass (2048-bit key;\n\tunprotected) header.d=networkplumber-org.20150623.gappssmtp.com\n\theader.i=@networkplumber-org.20150623.gappssmtp.com\n\theader.b=\"2H9dxFbK\"; dkim-atps=neutral"],"Received":["from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xnbQY3bGPz9sRY\n\tfor ;\n\tThu, 7 Sep 2017 06:53:25 +1000 (AEST)","(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1753285AbdIFUxV (ORCPT );\n\tWed, 6 Sep 2017 16:53:21 -0400","from mail-pf0-f171.google.com ([209.85.192.171]:34557 \"EHLO\n\tmail-pf0-f171.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1753242AbdIFUxS (ORCPT\n\t); Wed, 6 Sep 2017 16:53:18 -0400","by mail-pf0-f171.google.com with SMTP id e1so583448pfk.1\n\tfor ; Wed, 06 Sep 2017 13:53:18 -0700 (PDT)","from xeon-e3.lan (76-14-207-240.or.wavecable.com. [76.14.207.240])\n\tby smtp.gmail.com with ESMTPSA id\n\tx130sm841171pfd.65.2017.09.06.13.53.16\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tWed, 06 Sep 2017 13:53:16 -0700 (PDT)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=networkplumber-org.20150623.gappssmtp.com; s=20150623;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=nwWiPdGXUIYuzNeW+ojLSbHRKc/FIAPfRnvONl0TMXI=;\n\tb=2H9dxFbKqWGkPaNf0j5UVGn/DpNLxNenZMIUzPAdDr4UlaogifiWAjTBkBhSyEU67f\n\tWTuX6hC6uZeI6kNfdSfbJi5jzDk2qWZjdYZyyeqqtfmQMWjilYKDQaEp+IdhyrDn593L\n\twzrMWaJsEjj1UgMJK7nqOH+1/9O4SLj1wPDuQ/Dc1Bwy6qeRzeYg2q5vcT6kX5QOIF+W\n\tcvrJu4L69VFrZbYwvZciFd7EktXXH6yGDYtLCyl1jcnFJoqchmhxf5cGaC1GER9fSneB\n\tTdCKcVMUt4nXJ5by94SeHg3/jc/wnZHcC1F5DAOLZFRL/JKau+PSC6iQYGklufeOPu44\n\t4FAA==","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=nwWiPdGXUIYuzNeW+ojLSbHRKc/FIAPfRnvONl0TMXI=;\n\tb=heYVKZn7mPKZebB98CTBeWF5yRDUrSHcGyFO/5X1b+zSSOCgUN6mAa2MijHOQHbAtR\n\t9RtMuKKWvLQi7/paO/zno15khIEZLwZdOVIJV7g+an8OBmh5VuG6UNkc6C4LSUwWb8wz\n\twHzROC5yqegAhVw9+lTi77qmrOy20HrwWKmgQ5FsiNC/7X+wMkMHnna6yfiTX9hyPpoe\n\tZI8nkzum43ey5OHnmDLtOykNlnbkSgUW3KsWOF6u7L+/hf/if4InEnfhwaMkPmnVnUSN\n\tGhCHYolyPG6tKVTUoraCdzBD+KzrIrdIug42NUKgoOy4KhIfsXf+lqwm49vd2v3/z3Tc\n\tY/kw==","X-Gm-Message-State":"AHPjjUiu6QO9wA9jJ67JEJ6pQvg8qVdsJfQeNWQz82cikX92LmV/5h2V\n\tdfdQHJNb//Z85J5e","X-Google-Smtp-Source":"ADKCNb7VEytGxhT8yOsSTI8AlARJ4fhyuKA841rVleQ0raqjPDIlhLzNRM0745A36jaha+5spN6okw==","X-Received":"by 10.98.217.133 with SMTP id b5mr405591pfl.227.1504731197878;\n\tWed, 06 Sep 2017 13:53:17 -0700 (PDT)","From":"Stephen Hemminger ","X-Google-Original-From":"Stephen Hemminger ","To":"kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com","Cc":"devel@linuxdriverproject.org, netdev@vger.kernel.org","Subject":"[PATCH v2 net-next 2/2] hv_netvsc: avoid unnecessary wakeups on\n\tsubchannel creation","Date":"Wed, 6 Sep 2017 13:53:06 -0700","Message-Id":"<20170906205306.10541-3-sthemmin@microsoft.com>","X-Mailer":"git-send-email 2.11.0","In-Reply-To":"<20170906205306.10541-1-sthemmin@microsoft.com>","References":"<20170906205306.10541-1-sthemmin@microsoft.com>","Sender":"netdev-owner@vger.kernel.org","Precedence":"bulk","List-ID":"","X-Mailing-List":"netdev@vger.kernel.org"},"content":"Only need to wakeup the initiator after all sub-channels\nare opened.\n\nSigned-off-by: Stephen Hemminger \n---\n drivers/net/hyperv/rndis_filter.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)","diff":"diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c\nindex 731bc7cc6f43..065b204d8e17 100644\n--- a/drivers/net/hyperv/rndis_filter.c\n+++ b/drivers/net/hyperv/rndis_filter.c\n@@ -1048,8 +1048,8 @@ static void netvsc_sc_open(struct vmbus_channel *new_sc)\n \telse\n \t\tnetdev_notice(ndev, \"sub channel open failed: %d\\n\", ret);\n \n-\tatomic_inc(&nvscdev->open_chn);\n-\twake_up(&nvscdev->subchan_open);\n+\tif (atomic_inc_return(&nvscdev->open_chn) == nvscdev->num_chn)\n+\t\twake_up(&nvscdev->subchan_open);\n }\n \n /* Open sub-channels after completing the handling of the device probe.\n","prefixes":["v2","net-next","2/2"]}