From patchwork Sun Nov 21 21:56:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12631073 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3927CC433FE for ; Sun, 21 Nov 2021 21:56:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231513AbhKUV7u (ORCPT ); Sun, 21 Nov 2021 16:59:50 -0500 Received: from smtp09.smtpout.orange.fr ([80.12.242.131]:57416 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230313AbhKUV7t (ORCPT ); Sun, 21 Nov 2021 16:59:49 -0500 Received: from pop-os.home ([86.243.171.122]) by smtp.orange.fr with ESMTPA id oupFmUkCKE8xToupFmqrnz; Sun, 21 Nov 2021 22:56:42 +0100 X-ME-Helo: pop-os.home X-ME-Auth: YWZlNiIxYWMyZDliZWIzOTcwYTEyYzlhMmU3ZiQ1M2U2MzfzZDfyZTMxZTBkMTYyNDBjNDJlZmQ3ZQ== X-ME-Date: Sun, 21 Nov 2021 22:56:42 +0100 X-ME-IP: 86.243.171.122 From: Christophe JAILLET To: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, davem@davemloft.net, kuba@kernel.org Cc: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] hv_netvsc: Use bitmap_zalloc() when applicable Date: Sun, 21 Nov 2021 22:56:39 +0100 Message-Id: <534578d2296a1f4bd86c9bd4676e9d6b92eceb59.1637531723.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org 'send_section_map' is a bitmap. So use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some open-coded arithmetic in allocator arguments. Also change the corresponding 'kfree()' into 'bitmap_free()' to keep consistency. While at it, change an '== NULL' test into a '!'. Signed-off-by: Christophe JAILLET --- drivers/net/hyperv/netvsc.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 396bc1c204e6..5086cd07d1ed 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -155,7 +155,7 @@ static void free_netvsc_device(struct rcu_head *head) kfree(nvdev->extension); vfree(nvdev->recv_buf); vfree(nvdev->send_buf); - kfree(nvdev->send_section_map); + bitmap_free(nvdev->send_section_map); for (i = 0; i < VRSS_CHANNEL_MAX; i++) { xdp_rxq_info_unreg(&nvdev->chan_table[i].xdp_rxq); @@ -336,7 +336,6 @@ static int netvsc_init_buf(struct hv_device *device, struct net_device *ndev = hv_get_drvdata(device); struct nvsp_message *init_packet; unsigned int buf_size; - size_t map_words; int i, ret = 0; /* Get receive buffer area. */ @@ -528,10 +527,9 @@ static int netvsc_init_buf(struct hv_device *device, net_device->send_section_size, net_device->send_section_cnt); /* Setup state for managing the send buffer. */ - map_words = DIV_ROUND_UP(net_device->send_section_cnt, BITS_PER_LONG); - - net_device->send_section_map = kcalloc(map_words, sizeof(ulong), GFP_KERNEL); - if (net_device->send_section_map == NULL) { + net_device->send_section_map = bitmap_zalloc(net_device->send_section_cnt, + GFP_KERNEL); + if (!net_device->send_section_map) { ret = -ENOMEM; goto cleanup; }