From patchwork Thu Jun 24 05:20:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoquan He X-Patchwork-Id: 12340897 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=-16.1 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 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 58209C49EAB for ; Thu, 24 Jun 2021 05:20:26 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D2287613E3 for ; Thu, 24 Jun 2021 05:20:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D2287613E3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id DA51D8D000A; Thu, 24 Jun 2021 01:20:24 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D7EEC8D0008; Thu, 24 Jun 2021 01:20:24 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C6B988D000A; Thu, 24 Jun 2021 01:20:24 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0173.hostedemail.com [216.40.44.173]) by kanga.kvack.org (Postfix) with ESMTP id 949CC8D0008 for ; Thu, 24 Jun 2021 01:20:24 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id B1578181AEF30 for ; Thu, 24 Jun 2021 05:20:24 +0000 (UTC) X-FDA: 78287466768.15.269F3D2 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf29.hostedemail.com (Postfix) with ESMTP id DC8DC37A for ; Thu, 24 Jun 2021 05:20:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624512023; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=BkJEwIJHUaKQHMjsGSaBUEMszb7c3JSh80myCWGyHWY=; b=LEq9SXgjbCbSH9memr5oM3u1KSZ2cUJXBLQtPytEgkftFCTKqXbELgX75Xz4YIMR5E8fJp U5W7RiTca/oHCUnJzXlBzSvaKbGaT95nx1pUu1eOuIDXtNk7fdouIDdA4GtQKc9+UWrFNy HjpjU0m+3EXn575Ip3fJzPNEkLjw5ds= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-288-qGZhAdPJNi-40Gfv0Q7ZnQ-1; Thu, 24 Jun 2021 01:20:19 -0400 X-MC-Unique: qGZhAdPJNi-40Gfv0Q7ZnQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5E7A48042A8; Thu, 24 Jun 2021 05:20:18 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-12-82.pek2.redhat.com [10.72.12.82]) by smtp.corp.redhat.com (Postfix) with ESMTP id 55E9D19D7C; Thu, 24 Jun 2021 05:20:15 +0000 (UTC) From: Baoquan He To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, x86@kernel.org, rientjes@google.com, rppt@linux.ibm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, kexec@lists.infradead.org, bhe@redhat.com Subject: [PATCH 1/2] docs: kernel-parameters: Update to reflect the current default size of atomic pool Date: Thu, 24 Jun 2021 13:20:09 +0800 Message-Id: <20210624052010.5676-2-bhe@redhat.com> In-Reply-To: <20210624052010.5676-1-bhe@redhat.com> References: <20210624052010.5676-1-bhe@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: DC8DC37A X-Stat-Signature: eo8fuqfkhjno5d36zee8bzpo9xzyog16 Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=LEq9SXgj; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf29.hostedemail.com: domain of bhe@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=bhe@redhat.com X-HE-Tag: 1624512023-518683 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: Since commit 1d659236fb43("dma-pool: scale the default DMA coherent pool size with memory capacity"), the default size of atomic pool has been changed to take by scaling with system memory capacity. So update the document in kerenl-parameter.txt accordingly. Signed-off-by: Baoquan He --- Documentation/admin-guide/kernel-parameters.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index cb89dbdedc46..2c5017db2621 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -623,7 +623,9 @@ coherent_pool=nn[KMG] [ARM,KNL] Sets the size of memory pool for coherent, atomic dma - allocations, by default set to 256K. + allocations. Otherwise the default size will be scaled + with memory capacity, while clamped between 128K and + 1 << (PAGE_SHIFT + MAX_ORDER-1). com20020= [HW,NET] ARCnet - COM20020 chipset Format: