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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 27155C433DB for ; Mon, 22 Feb 2021 07:10:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C59B264E04 for ; Mon, 22 Feb 2021 07:10:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230125AbhBVHJk (ORCPT ); Mon, 22 Feb 2021 02:09:40 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:55701 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbhBVHJ1 (ORCPT ); Mon, 22 Feb 2021 02:09:27 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1613977680; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8cGC74PMCnaWbBAWCVUBDXRxKgEXEKkWJtgVHkIGS/0=; b=S+iIP6z44zesW//YgNL3eQwctMEzhHoB1uj4rMgtoI887OYm5wdnxGgaCkDdG6uN1UGHeu Y5kYhATBdh4ZfvHBp+9Jyw32I4SqLAliERLmDYdKSw4huPFIixxXwuN3JZPMcMk+YsB6Oz 7ZDoeL3gDMA5OFaCPMZImVPhoeJ/C18= Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-163-UcZMj1g5O_iXahSfecKrtQ-1; Mon, 22 Feb 2021 02:07:59 -0500 X-MC-Unique: UcZMj1g5O_iXahSfecKrtQ-1 Received: by mail-pg1-f200.google.com with SMTP id m5so7603170pgu.21 for ; Sun, 21 Feb 2021 23:07:58 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8cGC74PMCnaWbBAWCVUBDXRxKgEXEKkWJtgVHkIGS/0=; b=tSaXTNVn7CAeo5JRi2QaDoRvZr0ndocEldGrs0DhwgoYYll+W/eGrnX5HjMuspRnqp yd+d0aho6E+bae3px6N9m+eBiGJbhIHFtTT5wNtusSxhONjPiYiJrN22onAGQJ2Dy7M8 J8tK18V+o7Pz6xfzZh/ljV1lVwTP4+Fxmn8BEsplBiG1NTPXOdy8DR4IWttY+Ud4HemO rkNOVKMf8aN8YimkKDtuQ3KvOanpBf9+FLW45k2xGzayLVz7GB7K2d17aomii4FeWkV1 6VOgsqUxdZRHX1H7hQhAsVBzku3KUoHlcYKvkflmX3msisaZ4MPV76qxSHhL7x5EmVWR +PBw== X-Gm-Message-State: AOAM531Cr6YS6EtsMa7qBsDWHRVUrrpdqoFQbKSX2kG7p+1eVhuJZX0s WxeVgZJHUlcnMA+uSg0Z9Fw+aGeuuryR3sZQQcNwQc/ABY2SQ5C+PrWvZfLi1s9hifotyDRR8zw HGL3mRvjjzajY+ftmYS0KhBh9 X-Received: by 2002:a63:3602:: with SMTP id d2mr18862396pga.81.1613977677766; Sun, 21 Feb 2021 23:07:57 -0800 (PST) X-Google-Smtp-Source: ABdhPJzG0zRT+B2eqBSHJCG+woLse614WOgfmD0XJ5e3O9heRqpM5jj6GbtUXuwOa2JP1tEgm2+OsA== X-Received: by 2002:a63:3602:: with SMTP id d2mr18862385pga.81.1613977677597; Sun, 21 Feb 2021 23:07:57 -0800 (PST) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id ig12sm8527195pjb.36.2021.02.21.23.07.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Feb 2021 23:07:57 -0800 (PST) From: Coiby Xu To: netdev@vger.kernel.org Cc: kexec@lists.infradead.org, intel-wired-lan@lists.osuosl.org, Jesse Brandeburg , Tony Nguyen , "David S. Miller" , Jakub Kicinski , linux-kernel@vger.kernel.org (open list) Subject: [RFC PATCH 4/4] i40e: don't open i40iw client for kdump Date: Mon, 22 Feb 2021 15:07:01 +0800 Message-Id: <20210222070701.16416-5-coxu@redhat.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210222070701.16416-1-coxu@redhat.com> References: <20210222070701.16416-1-coxu@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org i40iw consumes huge amounts of memory. For example, on a x86_64 machine, i40iw consumed 1.5GB for Intel Corporation Ethernet Connection X722 for for 1GbE while "craskernel=auto" only reserved 160M. With the module parameter "resource_profile=2", we can reduce the memory usage of i40iw to ~300M which is still too much for kdump. Disabling the client registration would spare us the client interface operation open , i.e., i40iw_open for iwarp/uda device. Thus memory is saved for kdump. Signed-off-by: Coiby Xu --- drivers/net/ethernet/intel/i40e/i40e_client.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index a2dba32383f6..aafc2587f389 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -4,6 +4,7 @@ #include #include #include +#include #include "i40e.h" #include "i40e_prototype.h" @@ -741,6 +742,12 @@ int i40e_register_client(struct i40e_client *client) { int ret = 0; + /* Don't open i40iw client for kdump because i40iw will consume huge + * amounts of memory. + */ + if (is_kdump_kernel()) + return ret; + if (!client) { ret = -EIO; goto out; -- 2.30.1