From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC347C4360F for ; Wed, 3 Apr 2019 03:09:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 803E42084A for ; Wed, 3 Apr 2019 03:09:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728701AbfDCDJ6 (ORCPT ); Tue, 2 Apr 2019 23:09:58 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:33868 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728548AbfDCDJW (ORCPT ); Tue, 2 Apr 2019 23:09:22 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [10.3.19.211]) by Forcepoint Email with ESMTP id 24D26D8C6C248CD94E0B; Wed, 3 Apr 2019 11:09:18 +0800 (CST) Received: from localhost.localdomain (10.67.212.132) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.408.0; Wed, 3 Apr 2019 11:09:08 +0800 From: Huazhong Tan To: CC: , , , , , Yonglong Liu , Peng Li , Huazhong Tan Subject: [PATCH net-next 02/12] net: hns3: reduce resources use in kdump kernel Date: Wed, 3 Apr 2019 11:07:51 +0800 Message-ID: <1554260881-44948-3-git-send-email-tanhuazhong@huawei.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1554260881-44948-1-git-send-email-tanhuazhong@huawei.com> References: <1554260881-44948-1-git-send-email-tanhuazhong@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.67.212.132] Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yonglong Liu When the kdump kernel started, the HNS3 driver fail to register: [14.753340] hns3 0000:7d:00.0: Alloc umv space failed, want 512, get 0 [14.795034] hns3 0000:7d:00.0: add uc mac address fail, ret =-22. By default, the HNS3 driver will use about 512M memory, but usually the reserved memory of kdump kernel is 576M, so the HNS3 driver fail to register. This patch reduces the memory use in kdump kernel to about 16M. And when the kdump kernel starts, we must clear ucast mac address first to avoid add fail. Signed-off-by: Yonglong Liu Signed-off-by: Peng Li Signed-off-by: Huazhong Tan --- .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 23 +++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index deda606..e742a05 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include "hclge_cmd.h" #include "hclge_dcb.h" @@ -1015,6 +1016,23 @@ static int hclge_get_cap(struct hclge_dev *hdev) return ret; } +static void hclge_init_kdump_kernel_config(struct hclge_dev *hdev) +{ +#define HCLGE_MIN_TX_DESC 64 +#define HCLGE_MIN_RX_DESC 64 + + if (!is_kdump_kernel()) + return; + + dev_info(&hdev->pdev->dev, + "Running kdump kernel. Using minimal resources\n"); + + /* minimal queue pairs equals to the number of vports */ + hdev->num_tqps = hdev->num_vmdq_vport + hdev->num_req_vfs + 1; + hdev->num_tx_desc = HCLGE_MIN_TX_DESC; + hdev->num_rx_desc = HCLGE_MIN_RX_DESC; +} + static int hclge_configure(struct hclge_dev *hdev) { struct hclge_cfg cfg; @@ -1074,6 +1092,8 @@ static int hclge_configure(struct hclge_dev *hdev) hdev->tx_sch_mode = HCLGE_FLAG_TC_BASE_SCH_MODE; + hclge_init_kdump_kernel_config(hdev); + return ret; } @@ -6293,7 +6313,8 @@ static int hclge_set_mac_addr(struct hnae3_handle *handle, void *p, return -EINVAL; } - if (!is_first && hclge_rm_uc_addr(handle, hdev->hw.mac.mac_addr)) + if ((!is_first || is_kdump_kernel()) && + hclge_rm_uc_addr(handle, hdev->hw.mac.mac_addr)) dev_warn(&hdev->pdev->dev, "remove old uc mac address fail.\n"); -- 2.7.4