From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757330AbcHCBEP (ORCPT ); Tue, 2 Aug 2016 21:04:15 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:24418 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756821AbcHCBDt (ORCPT ); Tue, 2 Aug 2016 21:03:49 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="9452463" From: Zhou Wenjian To: CC: , , , Subject: [PATCH v3 1/2] Documentation: kdump: remind user of nr_cpus Date: Wed, 3 Aug 2016 08:59:11 +0800 Message-ID: <1470185952-23477-1-git-send-email-zhouwj-fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.167.226.48] X-yoursite-MailScanner-ID: 9015F42CA544.A19DB X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: zhouwj-fnst@cn.fujitsu.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v2->v3: add description of nr_cpus. v1->v2: change nr_cpus to maxcpus nr_cpus can help to save memory. So we should remind user of it. Signed-off-by: Zhou Wenjian --- Documentation/kdump/kdump.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt index 88ff63d..4aa194e 100644 --- a/Documentation/kdump/kdump.txt +++ b/Documentation/kdump/kdump.txt @@ -393,6 +393,8 @@ Notes on loading the dump-capture kernel: * We generally don' have to bring up a SMP kernel just to capture the dump. Hence generally it is useful either to build a UP dump-capture kernel or specify maxcpus=1 option while loading dump-capture kernel. + Note, though maxcpus always works, we should replace it by nr_cpus to + save memory if supported by the current ARCH, such as x86. * For s390x there are two kdump modes: If a ELF header is specified with the elfcorehdr= kernel parameter, it is used by the kdump kernel as it -- 1.8.3.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from [59.151.112.132] (helo=heian.cn.fujitsu.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bUkYK-0002dX-Sa for kexec@lists.infradead.org; Wed, 03 Aug 2016 01:00:57 +0000 From: Zhou Wenjian Subject: [PATCH v3 1/2] Documentation: kdump: remind user of nr_cpus Date: Wed, 3 Aug 2016 08:59:11 +0800 Message-ID: <1470185952-23477-1-git-send-email-zhouwj-fnst@cn.fujitsu.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: linux-kernel@vger.kernel.org Cc: dyoung@redhat.com, d.hatayama@jp.fujitsu.com, kexec@lists.infradead.org, bhe@redhat.com v2->v3: add description of nr_cpus. v1->v2: change nr_cpus to maxcpus nr_cpus can help to save memory. So we should remind user of it. Signed-off-by: Zhou Wenjian --- Documentation/kdump/kdump.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/kdump/kdump.txt b/Documentation/kdump/kdump.txt index 88ff63d..4aa194e 100644 --- a/Documentation/kdump/kdump.txt +++ b/Documentation/kdump/kdump.txt @@ -393,6 +393,8 @@ Notes on loading the dump-capture kernel: * We generally don' have to bring up a SMP kernel just to capture the dump. Hence generally it is useful either to build a UP dump-capture kernel or specify maxcpus=1 option while loading dump-capture kernel. + Note, though maxcpus always works, we should replace it by nr_cpus to + save memory if supported by the current ARCH, such as x86. * For s390x there are two kdump modes: If a ELF header is specified with the elfcorehdr= kernel parameter, it is used by the kdump kernel as it -- 1.8.3.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec