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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 B45E2C433E0 for ; Fri, 10 Jul 2020 12:19:45 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7DA9220720 for ; Fri, 10 Jul 2020 12:19:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DA9220720 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=hisilicon.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EE8CA6B0005; Fri, 10 Jul 2020 08:19:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E98BE8D0002; Fri, 10 Jul 2020 08:19:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DAFEC6B0007; Fri, 10 Jul 2020 08:19:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0059.hostedemail.com [216.40.44.59]) by kanga.kvack.org (Postfix) with ESMTP id C7D0D6B0005 for ; Fri, 10 Jul 2020 08:19:44 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 461CC4DA9 for ; Fri, 10 Jul 2020 12:19:44 +0000 (UTC) X-FDA: 77022072288.15.bed52_210be2226ece Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id CC4D11814B0DE for ; Fri, 10 Jul 2020 12:19:43 +0000 (UTC) X-HE-Tag: bed52_210be2226ece X-Filterd-Recvd-Size: 2071 Received: from huawei.com (szxga07-in.huawei.com [45.249.212.35]) by imf31.hostedemail.com (Postfix) with ESMTP for ; Fri, 10 Jul 2020 12:19:43 +0000 (UTC) Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id F3E97AD97076D32284B8; Fri, 10 Jul 2020 20:19:39 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.487.0; Fri, 10 Jul 2020 20:19:33 +0800 From: Tian Tao To: , , CC: Subject: [PATCH v3] vmalloc: Add the right hint when vmalloc failed Date: Fri, 10 Jul 2020 20:17:52 +0800 Message-ID: <1594383472-52983-1-git-send-email-tiantao6@hisilicon.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected X-Rspamd-Queue-Id: CC4D11814B0DE X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: In fact "vmalloc=" cmdline option is not available on many platforms.When the user encounters this error, add the correct hint to prevent misleading. Signed-off-by: Tian Tao v2: Add appropriate hints and let users decide if they can increase the size of the vmalloc by vmalloc= depending on their platform v3: change the patch name and commit messages. --- mm/vmalloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 89e83d3..c6ae7e6 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1238,8 +1238,8 @@ static struct vmap_area *alloc_vmap_area(unsigned long size, } if (!(gfp_mask & __GFP_NOWARN) && printk_ratelimit()) - pr_warn("vmap allocation for size %lu failed: use vmalloc= to increase size\n", - size); + pr_warn("vmap allocation for size %lu failed: use vmalloc= to increase size, + if your ARCH supports it\n", size); kmem_cache_free(vmap_area_cachep, va); return ERR_PTR(-EBUSY); -- 2.7.4