From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f69.google.com (mail-pg0-f69.google.com [74.125.83.69]) by kanga.kvack.org (Postfix) with ESMTP id 3C5716B0006 for ; Wed, 31 Jan 2018 02:58:56 -0500 (EST) Received: by mail-pg0-f69.google.com with SMTP id 79so10138611pge.16 for ; Tue, 30 Jan 2018 23:58:56 -0800 (PST) Received: from mx2.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id v8si1207609pgs.639.2018.01.30.23.58.54 for (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 30 Jan 2018 23:58:55 -0800 (PST) Date: Wed, 31 Jan 2018 08:58:52 +0100 From: Michal Hocko Subject: Re: [RFC] mm/migrate: Add new migration reason MR_HUGETLB Message-ID: <20180131075852.GL21609@dhcp22.suse.cz> References: <20180130030714.6790-1-khandual@linux.vnet.ibm.com> <20180130075949.GN21609@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Anshuman Khandual Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org On Wed 31-01-18 07:55:05, Anshuman Khandual wrote: > On 01/30/2018 01:29 PM, Michal Hocko wrote: > > On Tue 30-01-18 08:37:14, Anshuman Khandual wrote: > >> alloc_contig_range() initiates compaction and eventual migration for > >> the purpose of either CMA or HugeTLB allocation. At present, reason > >> code remains the same MR_CMA for either of those cases. Lets add a > >> new reason code which will differentiate the purpose of migration > >> as HugeTLB allocation instead. > > Why do we need it? > > The same reason why we have MR_CMA (maybe some other ones as well) at > present, for reporting purpose through traces at the least. It just > seemed like same reason code is being used for two different purpose > of migration. But do we have any real user asking for this kind of information? -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org