From patchwork Fri Nov 4 16:36:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salil Mehta X-Patchwork-Id: 80881 Delivered-To: patch@linaro.org Received: by 10.80.170.210 with SMTP id r18csp1227498edc; Fri, 4 Nov 2016 09:38:34 -0700 (PDT) X-Received: by 10.98.7.151 with SMTP id 23mr25030228pfh.5.1478277514578; Fri, 04 Nov 2016 09:38:34 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id g6si17481413pfa.52.2016.11.04.09.38.34; Fri, 04 Nov 2016 09:38:34 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964969AbcKDQiZ (ORCPT + 27 others); Fri, 4 Nov 2016 12:38:25 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:32378 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964940AbcKDQiV (ORCPT ); Fri, 4 Nov 2016 12:38:21 -0400 Received: from 172.24.1.136 (EHLO szxeml432-hub.china.huawei.com) ([172.24.1.136]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DUO02507; Sat, 05 Nov 2016 00:38:08 +0800 (CST) Received: from S00293818-DELL1.china.huawei.com (10.203.181.154) by szxeml432-hub.china.huawei.com (10.82.67.209) with Microsoft SMTP Server id 14.3.235.1; Sat, 5 Nov 2016 00:37:59 +0800 From: Salil Mehta To: CC: , , , , , , , , Ping Zhang Subject: [PATCH for-next 03/11] IB/hns: Optimize the logic of allocating memory using APIs Date: Fri, 4 Nov 2016 16:36:25 +0000 Message-ID: <20161104163633.141880-4-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20161104163633.141880-1-salil.mehta@huawei.com> References: <20161104163633.141880-1-salil.mehta@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.203.181.154] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Wei Hu (Xavier)" This patch modified the logic of allocating memory using APIs in hns RoCE driver. We used kcalloc instead of kmalloc_array and bitmap_zero. And When kcalloc failed, call vzalloc to alloc memory. Signed-off-by: Wei Hu (Xavier) Signed-off-by: Ping Zhang Signed-off-by: Salil Mehta --- drivers/infiniband/hw/hns/hns_roce_mr.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) -- 1.7.9.5 diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c index fb87883..d3dfb5f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_mr.c +++ b/drivers/infiniband/hw/hns/hns_roce_mr.c @@ -137,11 +137,12 @@ static int hns_roce_buddy_init(struct hns_roce_buddy *buddy, int max_order) for (i = 0; i <= buddy->max_order; ++i) { s = BITS_TO_LONGS(1 << (buddy->max_order - i)); - buddy->bits[i] = kmalloc_array(s, sizeof(long), GFP_KERNEL); - if (!buddy->bits[i]) - goto err_out_free; - - bitmap_zero(buddy->bits[i], 1 << (buddy->max_order - i)); + buddy->bits[i] = kcalloc(s, sizeof(long), GFP_KERNEL); + if (!buddy->bits[i]) { + buddy->bits[i] = vzalloc(s * sizeof(long)); + if (!buddy->bits[i]) + goto err_out_free; + } } set_bit(0, buddy->bits[buddy->max_order]); @@ -151,7 +152,7 @@ static int hns_roce_buddy_init(struct hns_roce_buddy *buddy, int max_order) err_out_free: for (i = 0; i <= buddy->max_order; ++i) - kfree(buddy->bits[i]); + kvfree(buddy->bits[i]); err_out: kfree(buddy->bits); @@ -164,7 +165,7 @@ static void hns_roce_buddy_cleanup(struct hns_roce_buddy *buddy) int i; for (i = 0; i <= buddy->max_order; ++i) - kfree(buddy->bits[i]); + kvfree(buddy->bits[i]); kfree(buddy->bits); kfree(buddy->num_free);