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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC4E7C433F5 for ; Tue, 24 May 2022 12:04:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6A0808D0002; Tue, 24 May 2022 08:04:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 64FDA8D0001; Tue, 24 May 2022 08:04:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 53A418D0002; Tue, 24 May 2022 08:04:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 46F738D0001 for ; Tue, 24 May 2022 08:04:36 -0400 (EDT) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 1955C34929 for ; Tue, 24 May 2022 12:04:36 +0000 (UTC) X-FDA: 79500504552.17.D206099 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf21.hostedemail.com (Postfix) with ESMTP id BF3D81C0034 for ; Tue, 24 May 2022 12:04:23 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 15F571F86A; Tue, 24 May 2022 12:04:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1653393874; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Kt6lRreumMR82QxTIV2F0todF1CGcv8SrAK54H/AV8A=; b=W1eYCUa3Gc34WBARqY6Z4kLP1JcTMqeIR8a203LcNCcnfhIJGZXU4XvcbMblM5ifce7hs9 l3qlXUc7EIsXHl2hRqLmWHxad74fKSX1lTrYgtR6v5CXB0yaCAo8dzWKeLQbCrKBaLnlp6 Kptviaf5cYuvAYHoxvGS5a0rFRrmUoE= Received: from suse.cz (unknown [10.100.201.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id B9D2F2C141; Tue, 24 May 2022 12:04:33 +0000 (UTC) Date: Tue, 24 May 2022 14:04:33 +0200 From: Michal Hocko To: =?utf-8?B?6LS65Lit5Z2k?= Cc: hannes@cmpxchg.org, roman.gushchin@linux.dev, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, lizefan.x@bytedance.com Subject: Re: [External] Re: [PATCH] mm: memcontrol: add the mempolicy interface for cgroup v2. Message-ID: References: <20220524103638.473-1-hezhongkun.hzk@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspam-User: X-Rspamd-Queue-Id: BF3D81C0034 X-Stat-Signature: ymr71ga9gz5nfpc5c8x5a4kjpb3qj15j Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=W1eYCUa3; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf21.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.29 as permitted sender) smtp.mailfrom=mhocko@suse.com X-Rspamd-Server: rspam04 X-HE-Tag: 1653393863-248008 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: On Tue 24-05-22 19:46:38, 贺中坤 wrote: > Hi Michal, thanks for your reply. > mempolicy has two functions, which nodes to choose and how to use these > nodes. cpuset can only decide the first one，it equal to 'bind' mempolicy. > If cgroups support mempolicy, we can continue to develop more policy > types. For example, allocate memory according to node weight, etc. > We would like to have more precise control over memory allocation in NUMA > server. Why cputset controller cannot be extended instead? -- Michal Hocko SUSE Labs