From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Hildenbrand Subject: Re: [PATCH RFCv2 2/4] mm/memory_hotplug: Replace "bool want_memblock" by "int type" Date: Mon, 3 Dec 2018 11:33:12 +0100 Message-ID: <5ecbff41-fc41-79fc-696e-4ca1f066f9aa@redhat.com> References: <20181130175922.10425-1-david@redhat.com> <20181130175922.10425-3-david@redhat.com> <20181201015024.3o334nk2fe5mlasj@master> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20181201015024.3o334nk2fe5mlasj@master> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: Wei Yang Cc: Oscar Salvador , Rich Felker , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , Heiko Carstens , linux-mm@kvack.org, Michal Hocko , Paul Mackerras , "H. Peter Anvin" , Dan Williams , "Rafael J. Wysocki" , linux-s390@vger.kernel.org, Dave Jiang , Yoshinori Sato , Michael Ellerman , x86@kernel.org, Matthew Wilcox , linux-acpi@vger.kernel.org, Ingo Molnar , xen-devel@lists.xenproject.org, Rob Herring , Fenghua Yu List-Id: linux-acpi@vger.kernel.org On 01.12.18 02:50, Wei Yang wrote: > On Fri, Nov 30, 2018 at 06:59:20PM +0100, David Hildenbrand wrote: >> Let's pass a memory block type instead. Pass "MEMORY_BLOCK_NONE" for device >> memory and for now "MEMORY_BLOCK_UNSPECIFIED" for anything else. No >> functional change. > > I would suggest to put more words to this. Sure, makes sense, I'll add more details. Thanks! > > " > Function arch_add_memory()'s last parameter *want_memblock* is used to > determin whether it is necessary to create a corresponding memory block > device. After introducing the memory block type, this patch replaces the > bool type *want_memblock* with memory block type with following rules > for now: > > * Pass "MEMORY_BLOCK_NONE" for device memory > * Pass "MEMORY_BLOCK_UNSPECIFIED" for anything else > > Since this parameter is passed deep to __add_section(), all its > descendents are effected. Below lists those descendents. > > arch_add_memory() > add_pages() > __add_pages() > __add_section() > > " [...] -- Thanks, David / dhildenb From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by kanga.kvack.org (Postfix) with ESMTP id 631F06B689D for ; Mon, 3 Dec 2018 05:33:28 -0500 (EST) Received: by mail-qk1-f198.google.com with SMTP id y83so12566773qka.7 for ; Mon, 03 Dec 2018 02:33:28 -0800 (PST) Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id l90si4131613qte.331.2018.12.03.02.33.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 03 Dec 2018 02:33:27 -0800 (PST) Subject: Re: [PATCH RFCv2 2/4] mm/memory_hotplug: Replace "bool want_memblock" by "int type" References: <20181130175922.10425-1-david@redhat.com> <20181130175922.10425-3-david@redhat.com> <20181201015024.3o334nk2fe5mlasj@master> From: David Hildenbrand Message-ID: <5ecbff41-fc41-79fc-696e-4ca1f066f9aa@redhat.com> Date: Mon, 3 Dec 2018 11:33:12 +0100 MIME-Version: 1.0 In-Reply-To: <20181201015024.3o334nk2fe5mlasj@master> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Wei Yang Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-acpi@vger.kernel.org, devel@linuxdriverproject.org, xen-devel@lists.xenproject.org, x86@kernel.org, Tony Luck , Fenghua Yu , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Martin Schwidefsky , Heiko Carstens , Yoshinori Sato , Rich Felker , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Greg Kroah-Hartman , "Rafael J. Wysocki" , Andrew Morton , Mike Rapoport , Michal Hocko , Dan Williams , "Kirill A. Shutemov" , Oscar Salvador , Nicholas Piggin , Stephen Rothwell , Christophe Leroy , Jonathan Neusch??fer , Mauricio Faria de Oliveira , Vasily Gorbik , Arun KS , Rob Herring , Pavel Tatashin , "mike.travis@hpe.com" , Joonsoo Kim , Logan Gunthorpe , J??r??me Glisse , "Jan H. Sch??nherr" , Dave Jiang , Matthew Wilcox , Mathieu Malaterre On 01.12.18 02:50, Wei Yang wrote: > On Fri, Nov 30, 2018 at 06:59:20PM +0100, David Hildenbrand wrote: >> Let's pass a memory block type instead. Pass "MEMORY_BLOCK_NONE" for device >> memory and for now "MEMORY_BLOCK_UNSPECIFIED" for anything else. No >> functional change. > > I would suggest to put more words to this. Sure, makes sense, I'll add more details. Thanks! > > " > Function arch_add_memory()'s last parameter *want_memblock* is used to > determin whether it is necessary to create a corresponding memory block > device. After introducing the memory block type, this patch replaces the > bool type *want_memblock* with memory block type with following rules > for now: > > * Pass "MEMORY_BLOCK_NONE" for device memory > * Pass "MEMORY_BLOCK_UNSPECIFIED" for anything else > > Since this parameter is passed deep to __add_section(), all its > descendents are effected. Below lists those descendents. > > arch_add_memory() > add_pages() > __add_pages() > __add_section() > > " [...] -- Thanks, David / dhildenb 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=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 60792C04EBF for ; Mon, 3 Dec 2018 10:36:27 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D16452082F for ; Mon, 3 Dec 2018 10:36:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D16452082F Authentication-Results: mail.kernel.org; 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Mon, 3 Dec 2018 10:33:25 +0000 (UTC) Received: from [10.36.118.125] (unknown [10.36.118.125]) by smtp.corp.redhat.com (Postfix) with ESMTP id DCB9D60923; Mon, 3 Dec 2018 10:33:12 +0000 (UTC) Subject: Re: [PATCH RFCv2 2/4] mm/memory_hotplug: Replace "bool want_memblock" by "int type" To: Wei Yang References: <20181130175922.10425-1-david@redhat.com> <20181130175922.10425-3-david@redhat.com> <20181201015024.3o334nk2fe5mlasj@master> From: David Hildenbrand Openpgp: preference=signencrypt Autocrypt: addr=david@redhat.com; prefer-encrypt=mutual; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwX4EEwECACgFAljj9eoCGwMFCQlmAYAGCwkI BwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEE3eEPcA/4Na5IIP/3T/FIQMxIfNzZshIq687qgG 8UbspuE/YSUDdv7r5szYTK6KPTlqN8NAcSfheywbuYD9A4ZeSBWD3/NAVUdrCaRP2IvFyELj xoMvfJccbq45BxzgEspg/bVahNbyuBpLBVjVWwRtFCUEXkyazksSv8pdTMAs9IucChvFmmq3 jJ2vlaz9lYt/lxN246fIVceckPMiUveimngvXZw21VOAhfQ+/sofXF8JCFv2mFcBDoa7eYob s0FLpmqFaeNRHAlzMWgSsP80qx5nWWEvRLdKWi533N2vC/EyunN3HcBwVrXH4hxRBMco3jvM m8VKLKao9wKj82qSivUnkPIwsAGNPdFoPbgghCQiBjBe6A75Z2xHFrzo7t1jg7nQfIyNC7ez MZBJ59sqA9EDMEJPlLNIeJmqslXPjmMFnE7Mby/+335WJYDulsRybN+W5rLT5aMvhC6x6POK z55fMNKrMASCzBJum2Fwjf/VnuGRYkhKCqqZ8gJ3OvmR50tInDV2jZ1DQgc3i550T5JDpToh dPBxZocIhzg+MBSRDXcJmHOx/7nQm3iQ6iLuwmXsRC6f5FbFefk9EjuTKcLMvBsEx+2DEx0E UnmJ4hVg7u1PQ+2Oy+Lh/opK/BDiqlQ8Pz2jiXv5xkECvr/3Sv59hlOCZMOaiLTTjtOIU7Tq 7ut6OL64oAq+zsFNBFXLn5EBEADn1959INH2cwYJv0tsxf5MUCghCj/CA/lc/LMthqQ773ga uB9mN+F1rE9cyyXb6jyOGn+GUjMbnq1o121Vm0+neKHUCBtHyseBfDXHA6m4B3mUTWo13nid 0e4AM71r0DS8+KYh6zvweLX/LL5kQS9GQeT+QNroXcC1NzWbitts6TZ+IrPOwT1hfB4WNC+X 2n4AzDqp3+ILiVST2DT4VBc11Gz6jijpC/KI5Al8ZDhRwG47LUiuQmt3yqrmN63V9wzaPhC+ xbwIsNZlLUvuRnmBPkTJwwrFRZvwu5GPHNndBjVpAfaSTOfppyKBTccu2AXJXWAE1Xjh6GOC 8mlFjZwLxWFqdPHR1n2aPVgoiTLk34LR/bXO+e0GpzFXT7enwyvFFFyAS0Nk1q/7EChPcbRb hJqEBpRNZemxmg55zC3GLvgLKd5A09MOM2BrMea+l0FUR+PuTenh2YmnmLRTro6eZ/qYwWkC u8FFIw4pT0OUDMyLgi+GI1aMpVogTZJ70FgV0pUAlpmrzk/bLbRkF3TwgucpyPtcpmQtTkWS gDS50QG9DR/1As3LLLcNkwJBZzBG6PWbvcOyrwMQUF1nl4SSPV0LLH63+BrrHasfJzxKXzqg rW28CTAE2x8qi7e/6M/+XXhrsMYG+uaViM7n2je3qKe7ofum3s4vq7oFCPsOgwARAQABwsFl BBgBAgAPBQJVy5+RAhsMBQkJZgGAAAoJEE3eEPcA/4NagOsP/jPoIBb/iXVbM+fmSHOjEshl KMwEl/m5iLj3iHnHPVLBUWrXPdS7iQijJA/VLxjnFknhaS60hkUNWexDMxVVP/6lbOrs4bDZ NEWDMktAeqJaFtxackPszlcpRVkAs6Msn9tu8hlvB517pyUgvuD7ZS9gGOMmYwFQDyytpepo YApVV00P0u3AaE0Cj/o71STqGJKZxcVhPaZ+LR+UCBZOyKfEyq+ZN311VpOJZ1IvTExf+S/5 lqnciDtbO3I4Wq0ArLX1gs1q1XlXLaVaA3yVqeC8E7kOchDNinD3hJS4OX0e1gdsx/e6COvy qNg5aL5n0Kl4fcVqM0LdIhsubVs4eiNCa5XMSYpXmVi3HAuFyg9dN+x8thSwI836FoMASwOl C7tHsTjnSGufB+D7F7ZBT61BffNBBIm1KdMxcxqLUVXpBQHHlGkbwI+3Ye+nE6HmZH7IwLwV W+Ajl7oYF+jeKaH4DZFtgLYGLtZ1LDwKPjX7VAsa4Yx7S5+EBAaZGxK510MjIx6SGrZWBrrV TEvdV00F2MnQoeXKzD7O4WFbL55hhyGgfWTHwZ457iN9SgYi1JLPqWkZB0JRXIEtjd4JEQcx +8Umfre0Xt4713VxMygW0PnQt5aSQdMD58jHFxTk092mU+yIHj5LeYgvwSgZN4airXk5yRXl SE+xAvmumFBY Organization: Red Hat GmbH Message-ID: <5ecbff41-fc41-79fc-696e-4ca1f066f9aa@redhat.com> Date: Mon, 3 Dec 2018 11:33:12 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.3.1 MIME-Version: 1.0 In-Reply-To: <20181201015024.3o334nk2fe5mlasj@master> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.47]); Mon, 03 Dec 2018 10:33:26 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oscar Salvador , Rich Felker , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, Peter Zijlstra , Dave Hansen , Heiko Carstens , linux-mm@kvack.org, Michal Hocko , Paul Mackerras , "H. Peter Anvin" , Dan Williams , "Rafael J. Wysocki" , linux-s390@vger.kernel.org, Dave Jiang , Yoshinori Sato , x86@kernel.org, Matthew Wilcox , linux-acpi@vger.kernel.org, Ingo Molnar , xen-devel@lists.xenproject.org, Rob Herring , Fenghua Yu , "Jan H. Sch??nherr" , Pavel Tatashin , Vasily Gorbik , Stephen Rothwell , "mike.travis@hpe.com" , Jonathan Neusch??fer , Nicholas Piggin , J??r??me Glisse , Mike Rapoport , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , Joonsoo Kim , Arun KS , Tony Luck , Mathieu Malaterre , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Logan Gunthorpe , Mauricio Faria de Oliveira , Martin Schwidefsky , devel@linuxdriverproject.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "Kirill A. Shutemov" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 01.12.18 02:50, Wei Yang wrote: > On Fri, Nov 30, 2018 at 06:59:20PM +0100, David Hildenbrand wrote: >> Let's pass a memory block type instead. Pass "MEMORY_BLOCK_NONE" for device >> memory and for now "MEMORY_BLOCK_UNSPECIFIED" for anything else. No >> functional change. > > I would suggest to put more words to this. Sure, makes sense, I'll add more details. Thanks! > > " > Function arch_add_memory()'s last parameter *want_memblock* is used to > determin whether it is necessary to create a corresponding memory block > device. After introducing the memory block type, this patch replaces the > bool type *want_memblock* with memory block type with following rules > for now: > > * Pass "MEMORY_BLOCK_NONE" for device memory > * Pass "MEMORY_BLOCK_UNSPECIFIED" for anything else > > Since this parameter is passed deep to __add_section(), all its > descendents are effected. Below lists those descendents. > > arch_add_memory() > add_pages() > __add_pages() > __add_section() > > " [...] -- Thanks, David / dhildenb