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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 84504FF8867 for ; Mon, 27 Apr 2026 20:06:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9A7106B0088; Mon, 27 Apr 2026 16:06:25 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9581A6B008A; Mon, 27 Apr 2026 16:06:25 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 81F7E6B008C; Mon, 27 Apr 2026 16:06:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 728FF6B0088 for ; Mon, 27 Apr 2026 16:06:25 -0400 (EDT) Received: from smtpin01.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id F394D8A78E for ; Mon, 27 Apr 2026 20:06:24 +0000 (UTC) X-FDA: 84705417888.01.1516998 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf21.hostedemail.com (Postfix) with ESMTP id 3E2B81C0008 for ; Mon, 27 Apr 2026 20:06:23 +0000 (UTC) Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=ouPioV8C; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf21.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1777320383; a=rsa-sha256; cv=none; b=4eeSBmPcRJQz6RkkcUbYln+pyD+GwrQ8Tyk9gltMpr4rIovsRLtVBbWH1Kx+878RqMFnQL 2tiiV/0sBdxDvoD5xxURYcBymBj7EvEzOX6m2cVpjAnwSXImltVGrMwysSgE40h/jSzjk8 f5k8CBXyVKJBM2727fPw26/5TwPpaeM= ARC-Authentication-Results: i=1; imf21.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=ouPioV8C; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf21.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1777320383; 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=pW4lwAIoSUhTlTlQ+ebOQPijiug1+Oa2z+ISjstKqKY=; b=Qj9dUUvTwoxTFKdeULPLaS90WM54vqTPajBpf3+bipDEa+TJ2eUMfnX5LKhpUfYPBYzZxR 3m5Qmgn8owu7556FqRzzMSaW6cjKHY23f3IuYHy49MtD47lWWYdgr7UerR/pNjtJ5lEX0y hyfTQtxw/c/RQjZyKVZeEgmYNmesL6Y= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 70B8960138; Mon, 27 Apr 2026 20:06:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD152C19425; Mon, 27 Apr 2026 20:06:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777320382; bh=fv0JqyTf9qsZGD2A+KMfMgq2gCyaBP1nCHd0vigXPHQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=ouPioV8CWjhERioQebI+56NgMMJRid1vb5ijj2LqJJ6hXO2Q5aIq/KfWFufzJT/hD qxeJdGmfn3cOtcJgc7Oz6eegcTuRqS3k49uwzju0ubI6b54KEqpXHHOciAlCy9LZME IRMK/eJW9ESYjq88RVrXub3jBogxMh/fUjxXf05W60Mr5I0XZrn9VHEPJoQda6L+wn 23eSyGenUFdiKY4KrLNgeXNW+otQm3oXoCzlPG6yZZVl9H71OxlZxq1MjmF8Agyli/ FOGRnrWSHgaGO2ZyhnZPM6TjQekj5JA+RzLeEVIHm71Z34S9YvPXGaw/NIJhozVUBL bAzi2fbqDpdzg== Message-ID: <4dc7e142-9761-4b32-ad75-4b2ff45e9604@kernel.org> Date: Mon, 27 Apr 2026 22:06:02 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 7.2 v16 04/13] mm/khugepaged: generalize __collapse_huge_page_* for mTHP support To: Usama Arif , Nico Pache Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, akpm@linux-foundation.org, anshuman.khandual@arm.com, apopple@nvidia.com, baohua@kernel.org, baolin.wang@linux.alibaba.com, byungchul@sk.com, catalin.marinas@arm.com, cl@gentwo.org, corbet@lwn.net, dave.hansen@linux.intel.com, dev.jain@arm.com, gourry@gourry.net, hannes@cmpxchg.org, hughd@google.com, jack@suse.cz, jackmanb@google.com, jannh@google.com, jglisse@google.com, joshua.hahnjy@gmail.com, kas@kernel.org, lance.yang@linux.dev, Liam.Howlett@oracle.com, ljs@kernel.org, mathieu.desnoyers@efficios.com, matthew.brost@intel.com, mhiramat@kernel.org, mhocko@suse.com, peterx@redhat.com, pfalcato@suse.de, rakie.kim@sk.com, raquini@redhat.com, rdunlap@infradead.org, richard.weiyang@gmail.com, rientjes@google.com, rostedt@goodmis.org, rppt@kernel.org, ryan.roberts@arm.com, shivankg@amd.com, sunnanyong@huawei.com, surenb@google.com, thomas.hellstrom@linux.intel.com, tiwai@suse.de, usamaarif642@gmail.com, vbabka@suse.cz, vishal.moola@gmail.com, wangkefeng.wang@huawei.com, will@kernel.org, willy@infradead.org, yang@os.amperecomputing.com, ying.huang@linux.alibaba.com, ziy@nvidia.com, zokeefe@google.com References: <20260420135554.27067-1-usama.arif@linux.dev> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20260420135554.27067-1-usama.arif@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Stat-Signature: bmokna69e1k7pcehnow95y8gcadcx9w8 X-Rspam-User: X-Rspamd-Queue-Id: 3E2B81C0008 X-Rspamd-Server: rspam07 X-HE-Tag: 1777320383-757902 X-HE-Meta: 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 3BRIZ0dx qJIm4XOI5s9Uf/JgziI1EstWxY3YboKVQLGjsoaaL9OETuP5pi8dyH6De5whCMCLbi4vzPOuHWb1p3NzhL5a9mpkYVLhoMjA32tK6BX7KR7crthKMgslA+fSIVQWTKNJirUoMLsSsqzXSTxf9G2blkS203HU31p+VktLTMyiYL95AA+HzKZeXr+bJSzLD7/64dgYV/GR+NivOXxJ2e5rPknBz2F7djOGyJGIQR8LfxHgc3/lHeO1qvhPVXceCt4yIKsYjPPpcNA0a0i9zSlZaiEV5XZrw6IUu5WZgKpKkX/ym/i2JLlad/Vp7OvgFYDzmUKOpC8g02t4a1FNGQCmzk8ra8m+YybFJODryCPDF0htO6eYNMXfaOhgzmQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > >> + pr_warn_once("mTHP collapse only supports max_ptes_none values of 0 or %u\n", >> + KHUGEPAGED_MAX_PTES_LIMIT); > > IMO, warn_once can get lost quickly in dmesg. Maybe pr_warn_ratelimited? > > Not sure what others opinions are.. pr_warn_ratelimited() still creates *a lot* of noise from a system daemon ... -- Cheers, David