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 AD0D6C71151 for ; Fri, 13 Jun 2025 13:45:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 516D26B009A; Fri, 13 Jun 2025 09:45:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4EEC76B009C; Fri, 13 Jun 2025 09:45:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3DC466B009D; Fri, 13 Jun 2025 09:45:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 1ED536B009A for ; Fri, 13 Jun 2025 09:45:58 -0400 (EDT) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id D02031A084D for ; Fri, 13 Jun 2025 13:45:57 +0000 (UTC) X-FDA: 83550500754.12.DF8915B Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by imf08.hostedemail.com (Postfix) with ESMTP id 4888E16001B for ; Fri, 13 Jun 2025 13:45:55 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=TwJF4oCf; spf=pass (imf08.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1749822355; h=from:from:sender:reply-to:subject:subject: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:dkim-signature; bh=wLQxLvmm4cnel7+fk2wS5R/B7wv5TBr8PUl4ea9Mgbo=; b=so2nY11Y1RgTEZIWwVWANE27TEsMfIGbW5x074HTRW340fdXwYKVuqBi6jwOV39D43iXnL WPYiacfAvwas/ynt3eh/hVHoBjEclvxtWwf88AkQ7uK3iXNEXU4X3KXwzovahxsZYwoG8W knMeCvqrnIqyuTTesq5N2TVo1/CDKRo= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1749822355; a=rsa-sha256; cv=none; b=3ro5m5mieiMBA9HLH4Ubw1RHc7e68KoggwhH066+MMGolxInX7iNlsHIoWMwelTw3v6xhp RLuMI6lPKF7dmZYPKw99bDxPyZEJmfQ+/Sj5b3hkSmDwwdAhvFBbhcgicDGZIe0RA29zqb rvjAIOoue0vhmXDARDyu5ZrbkfsLbL8= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=TwJF4oCf; spf=pass (imf08.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1749822354; h=from:from:reply-to:subject:subject: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:autocrypt:autocrypt; bh=wLQxLvmm4cnel7+fk2wS5R/B7wv5TBr8PUl4ea9Mgbo=; b=TwJF4oCfqWXPe5mj9NYq1WCa8xoYtN+tJMnBGNafX4urw46KETdvQ4yyx7A0Aa2yVV1PF8 e0ivCyc0CrmnVNWPdjQjR+mU9fetyjzMooOI1n7EvehRM2oCiJFG7vFO5mt/nh7jnLkq97 jMzJ3wYVjKR8LvcHvz+3YK61jEw5lb8= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-665-3YGKOZtbO4ej0i5Ao7Z0Ug-1; Fri, 13 Jun 2025 09:45:53 -0400 X-MC-Unique: 3YGKOZtbO4ej0i5Ao7Z0Ug-1 X-Mimecast-MFC-AGG-ID: 3YGKOZtbO4ej0i5Ao7Z0Ug_1749822352 Received: by mail-wr1-f69.google.com with SMTP id ffacd0b85a97d-3a4e713e05bso1208163f8f.3 for ; Fri, 13 Jun 2025 06:45:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749822352; x=1750427152; h=content-transfer-encoding:in-reply-to:organization:autocrypt :content-language:from:references:cc:to:subject:user-agent :mime-version:date:message-id:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=wLQxLvmm4cnel7+fk2wS5R/B7wv5TBr8PUl4ea9Mgbo=; b=u0zw0t1RvhOfDoEm2p7HrXnlWWMoc+1fbtiZZVsJXQTf+UlwUD+X6swBAmBdug39yN K3vEeByZa8Hq3xrjBgeZcuUJfaH5ouU0up1wRNVj5ZPF4AW370XzuypmzWCeGxx6iMnq wKdCH2Dy4EGNLdVrzjMlyLutZjNt6P9HAkotP6mVlu02c6OLIX1s0kobt+4k0t3l5G43 lLLWhl42gO7F09VCFLCb2Faoz64m0IsshG319P4ppnU6nzGUi7FL2oVe4RaJ2z11hWxQ 4hydyVmCyPWvbcyGMcscJFMBM1wPGonP9T4AGnVi4VqXWq3LR+D9XOu2sEpUyMkLwGyd B0Og== X-Forwarded-Encrypted: i=1; AJvYcCVgAcVCaOnU8td/ctm+PeKYNwNzEMgsYZZ+Zsvgxay06lgs9msgb6BHDngtth83uky2UvotCpXaqQ==@kvack.org X-Gm-Message-State: AOJu0YyAMC23gxAblKq1JE52ECxEYuTzr9i83Di/R8rURjqIZh1DisGX f23/Yr9TrB4LsoSMSIyjmrtzbWO16Ur5kwKW/DdljGRJGJsrsGMpF9uoejQvUN24HxrPqVMWk6z HEybLDGdXWnXtG3sMro0mGPZIF9E1Hs2sOhT9oAZyZMWPGMjYeKCE X-Gm-Gg: ASbGncsxiVYxyipX55tjM9W6KbFXvCvdUXyUZ8tq8GmAVSwSPx7GCwjPBqr2PUXg7hJ DpYsDlAFyvvS1s/4LYwHmlFtso17olYdGMvpWojCH0qnmfB6tue7ESzmYDE+eY0i6HaEO19REhu /gQzDxutoImbOKY6L+PNNKt0N+7uYXDN3dxf3b2YPXhe4sbd+H582Zej09xHkH9eIEynkbE2nE/ H1SLXzZNfRIgfQPDeyOFiye7b8AaDOkq4wUXDGY23H/X6LiyQGAjULd2qPdj0n49F39/7phWD4h 93068yT3snwtXgALqlTZqTgV1JBsVdcgww1+wNFPLmwzP4YCpmPSfj2nxk7FgtJML1grAlFL2NZ gkr9AIwsB3Fi4Ju1vGBVqPMvtZ6PCpMcUYVWZ6nSVSDdObqiV5Q== X-Received: by 2002:a05:6000:2089:b0:3a4:eda1:6c39 with SMTP id ffacd0b85a97d-3a5686fdb37mr3040920f8f.13.1749822352098; Fri, 13 Jun 2025 06:45:52 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHyRFyJJwbfY3gXU949NwjFHTpf5oLAOeT3DPP6xTQUPKFaeAUvjVd2SxYdkrYYlK//rZ/gVg== X-Received: by 2002:a05:6000:2089:b0:3a4:eda1:6c39 with SMTP id ffacd0b85a97d-3a5686fdb37mr3040884f8f.13.1749822351680; Fri, 13 Jun 2025 06:45:51 -0700 (PDT) Received: from ?IPV6:2003:d8:2f1a:3700:2982:b5f7:a04e:4cb4? (p200300d82f1a37002982b5f7a04e4cb4.dip0.t-ipconnect.de. [2003:d8:2f1a:3700:2982:b5f7:a04e:4cb4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a568a543d9sm2416437f8f.5.2025.06.13.06.45.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 13 Jun 2025 06:45:51 -0700 (PDT) Message-ID: <5a50eeba-b26d-4913-8016-45278608a1ee@redhat.com> Date: Fri, 13 Jun 2025 15:45:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 1/4] mm/mempolicy: Expose policy_nodemask() in include/linux/mempolicy.h To: Bijan Tabatabai , damon@lists.linux.com, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: sj@kernel.org, akpm@linux-foundation.org, corbet@lwn.net, ziy@nvidia.com, matthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, apopple@nvidia.com, bijantabatab@micron.com, venkataravis@micron.com, emirakhur@micron.com, ajayjoshi@micron.com, vtavarespetr@micron.com References: <20250612181330.31236-1-bijan311@gmail.com> <20250612181330.31236-2-bijan311@gmail.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: <20250612181330.31236-2-bijan311@gmail.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: BKStbokz5deMgfdG-AAQlq0gLD4BAkCmaLMKRxCbSPo_1749822352 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 4888E16001B X-Stat-Signature: oi6yoq84nuwbo9d87uwwg3uwqre7strr X-Rspamd-Server: rspam04 X-HE-Tag: 1749822355-570965 X-HE-Meta: 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 diDQyLsm c7JM6IAp6k4wbQ5D+YglE6L72bU/yVyb+hz91oMSgfl2ETUfPJzei2KlcfmcJO8V33FHn6FLBEWCNXij4k1Bz72iHXnBNTiMFs+iwW2i4u2mvS70CJy2KjcTeAqtLj1KGHi87uuCn74sY9qEeG7wzNcod8KR8Aji0IabldabkKD93p6J0uhbEKNpNTPkhpshrAZeVokUKDJSZn76JcE9ZcrYVg3EE83C0vJZAupWsPfZ3eKomyFV9uz0D5xY55/fxFCPPQusq7XKUHrKkjh9fnAXaJ8wM4BrHHWQfQDVCCWrP/m/3bET2o+8fR5mYKiHc7+AZZX2eeQBJbUhUUMI86exmGyi5f1NijFM3nN45h0gACjEyAMeN3em+2x8WwFZlZXXakswxCxc5uwFyINDwKgisx2orl9RZo2Lmh6H+3oQT2OtI7QlIM18p3xwfgNQUtPm/Xcw2Q0CzU/cYfdkTP7YrR8GbzobyKCIRudsCaA7upWUdg41czyEvnTmxnzFxgmAJA0ju+taoAfZ5fkXl2ZWax5PSXVlF02+/Hsd53gXgRLTlvhwM+5JKDn9LZ6FzMZaoAkcUBvvCHE7MBXnEmRrNGeIJby1OPF6DbuRT4APTAp4QiXM/D/iwfw== 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: List-Subscribe: List-Unsubscribe: On 12.06.25 20:13, Bijan Tabatabai wrote: > From: Bijan Tabatabai > > This patch is to allow DAMON to call policy_nodemask() so it can > determine where to place a page for interleaving. > > Signed-off-by: Bijan Tabatabai > --- > include/linux/mempolicy.h | 9 +++++++++ > mm/mempolicy.c | 4 +--- > 2 files changed, 10 insertions(+), 3 deletions(-) > > diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h > index 0fe96f3ab3ef..e96bf493ff7a 100644 > --- a/include/linux/mempolicy.h > +++ b/include/linux/mempolicy.h > @@ -133,6 +133,8 @@ struct mempolicy *__get_vma_policy(struct vm_area_struct *vma, > struct mempolicy *get_vma_policy(struct vm_area_struct *vma, > unsigned long addr, int order, pgoff_t *ilx); > bool vma_policy_mof(struct vm_area_struct *vma); > +nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol, > + pgoff_t ilx, int *nid); > > extern void numa_default_policy(void); > extern void numa_policy_init(void); > @@ -232,6 +234,13 @@ static inline struct mempolicy *get_vma_policy(struct vm_area_struct *vma, > return NULL; > } > > +static inline nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol, > + pgoff_t ilx, int *nid) > +{ > + *nid = NUMA_NO_NODE; > + return NULL; > +} > + > static inline int > vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst) > { > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index 3b1dfd08338b..54f539497e20 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -596,8 +596,6 @@ static const struct mempolicy_operations mpol_ops[MPOL_MAX] = { > > static bool migrate_folio_add(struct folio *folio, struct list_head *foliolist, > unsigned long flags); > -static nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol, > - pgoff_t ilx, int *nid); > > static bool strictly_unmovable(unsigned long flags) > { > @@ -2195,7 +2193,7 @@ static unsigned int interleave_nid(struct mempolicy *pol, pgoff_t ilx) > * Return a nodemask representing a mempolicy for filtering nodes for > * page allocation, together with preferred node id (or the input node id). > */ > -static nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol, > +nodemask_t *policy_nodemask(gfp_t gfp, struct mempolicy *pol, > pgoff_t ilx, int *nid) > { > nodemask_t *nodemask = NULL; You actually only care about the nid for your use case. Maybe we should add get_vma_policy_node() that internally does a get_vma_policy() to then give you only the node back. If get_vma_policy() is not the right thing (see my reply to patch #2), of course a get_task_policy_node() could be added. -- Cheers, David / dhildenb