From patchwork Wed Nov 23 19:41:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Salil Mehta X-Patchwork-Id: 9444193 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 560FB6075F for ; Wed, 23 Nov 2016 19:45:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5FC1B279D1 for ; Wed, 23 Nov 2016 19:45:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 549FA27CAF; Wed, 23 Nov 2016 19:45:34 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 003BA279D1 for ; Wed, 23 Nov 2016 19:45:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934842AbcKWTma (ORCPT ); Wed, 23 Nov 2016 14:42:30 -0500 Received: from szxga02-in.huawei.com ([119.145.14.65]:23233 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934833AbcKWTm2 (ORCPT ); Wed, 23 Nov 2016 14:42:28 -0500 Received: from 172.24.1.136 (EHLO SZXEML423-HUB.china.huawei.com) ([172.24.1.136]) by szxrg02-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DRE71022; Thu, 24 Nov 2016 03:42:20 +0800 (CST) Received: from S00293818-DELL1.china.huawei.com (10.203.181.153) by SZXEML423-HUB.china.huawei.com (10.82.67.154) with Microsoft SMTP Server id 14.3.235.1; Thu, 24 Nov 2016 03:42:10 +0800 From: Salil Mehta To: CC: , , , , , , , , , , Ping Zhang Subject: [PATCH V3 for-next 03/11] IB/hns: Optimize the logic of allocating memory using APIs Date: Wed, 23 Nov 2016 19:41:01 +0000 Message-ID: <20161123194109.420760-4-salil.mehta@huawei.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20161123194109.420760-1-salil.mehta@huawei.com> References: <20161123194109.420760-1-salil.mehta@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.203.181.153] X-CFilter-Loop: Reflected Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- Change log: PATCH V2: Addressed comment given by Leon Link: https://patchwork.kernel.org/patch/9412859/ PATCH V1: Initial Submit --- drivers/infiniband/hw/hns/hns_roce_mr.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c index fb87883..d87d189 100644 --- a/drivers/infiniband/hw/hns/hns_roce_mr.c +++ b/drivers/infiniband/hw/hns/hns_roce_mr.c @@ -137,11 +137,13 @@ 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 | + __GFP_NOWARN); + 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 +153,7 @@ 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 +166,7 @@ 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);