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 2C9C1C54FDF for ; Thu, 30 Jul 2026 07:51:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 04C816B0088; Thu, 30 Jul 2026 03:51:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F40996B0092; Thu, 30 Jul 2026 03:51:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E56AC6B0093; Thu, 30 Jul 2026 03:51:14 -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 C71606B0088 for ; Thu, 30 Jul 2026 03:51:14 -0400 (EDT) Received: from smtpin14.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 5FAEDA1E19 for ; Thu, 30 Jul 2026 07:51:14 +0000 (UTC) X-FDA: 85044672468.14.ED622CB Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf02.hostedemail.com (Postfix) with ESMTP id CAF8F80008 for ; Thu, 30 Jul 2026 07:51:12 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CMccH9qZ; spf=pass (imf02.hostedemail.com: domain of ljs@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1785397872; b=i7z8eCzQqerZOZkTZ6OwKw6UNthEWXB7/M0h5R0fk3NLcfxIy6YdJYt36ze/XRcy/UYIGz 3WY5drVnK8QQieu5gYzWy3/f8XjhcWohFTfoU4ZQdNsEa79KNY9VpjXAy0DsL7LrdpTBoi OI98sOFtmLbGIuhdPjYN58B1jTXVnyI= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CMccH9qZ; spf=pass (imf02.hostedemail.com: domain of ljs@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1785397872; 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=5w/82FCXijfhBdhNwVRgCGnxaefSRGHBnSyEBCZIdOY=; b=6qdCEt4OaFL7ttVO0pH5aU2MEIzxzkoRf+QmdDmPmFY3k0QkumWWaq2vp66dfUAoJkcOGu nP9T+mHdN/e/UhA6oaBIdPNhHxUDmSa+BL2JqUu4ghBBD/c4nqHkyjvqQkVa1m3/KPHaAs idYdm1YHE1yEFfElmAv3sUzsiua7JkM= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 4154F600AB; Thu, 30 Jul 2026 07:51:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 802C41F000E9; Thu, 30 Jul 2026 07:51:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785397872; bh=5w/82FCXijfhBdhNwVRgCGnxaefSRGHBnSyEBCZIdOY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=CMccH9qZx/LKuV9Yn7iaAbmPI1x9Zf0qcQxwaRpLJcWKsmbvFXp/pSo2p7MGNJqT8 hlVPDbRIpWj/4Wfl4WX6mxeNnz9vc/2Sn0SBYWqYRUpa0Psr+xaMyRbyvMRIZ77Qim xE0Fz5hGcOrcEoDDPkrf6crqMJH1HfI3husQjs9rxbTB74IL9p32m7+7+pMfNKPq36 v/abT6qHQOC/rNqHAFPyeWIxrZ24reB7vrtHk+vI9TmYH/vVcx2zvPEuh0+f5zUXVm M4Blwuw5RY1uotXXIYCX+8ZNPkyIzt6jgMXV7ufUxpluDis3SL602qQC7DuAvmb7HB MtjA1lRcLS07g== Date: Thu, 30 Jul 2026 08:50:53 +0100 From: "Lorenzo Stoakes (ARM)" To: Juan Yescas Cc: "David Hildenbrand (Arm)" , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , open list , "open list:MEMORY MANAGEMENT - CORE" , android-mm@google.com, fvdl@google.com, tkjos@google.com, minchan@google.com, dskiba@google.com Subject: Re: [RFC PATCH 00/16] Page Alloc Hogger Message-ID: References: <20260723074854.1013941-1-jyescas@google.com> <97605949-82c5-49e0-84b6-b42e8078b55d@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Stat-Signature: sqt7n8w31xswbbptbgwa7j9xebyo1ttc X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: CAF8F80008 X-Rspam-User: X-HE-Tag: 1785397872-412025 X-HE-Meta: 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 jwXKQK3B ihmte56xaRcHDE8zRKC3L4VU1UNCsMQ9mpoX0wkNvtAs9J8v6AA4L7vsom5OP92R7wp3nDpS9A5+eRELzzxYEADdCZo9HYPhgHUaV8F0daVHZZAnLEr/fZA/wxHKsei0tfZoHg5HniD22JiR9/Rl09FjEsvdJ7lHyGChHi6JZoewlLGI1fPapGXGsq+qUnhddVqycVwZqDizKDp6uq4OhSZriycPxttRJa8gb0SPFjkgrFwcPRy21+rei0VL49liKYeWoW5HbwylA5h7gX5xlQwQ4EC1y5hGxFQOvwg0tQiuGLS+DP/BzfKxsEBwn16qqdq57RVVcNadDBEdX+yo0Vv6KxEakANDBn4+IpFh477J2N9v7z8N0mQzOaQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jul 28, 2026 at 05:36:03PM -0700, Juan Yescas wrote: > On Tue, Jul 28, 2026 at 12:29 PM David Hildenbrand (Arm) > wrote: > > > > On 7/23/26 09:47, Juan Yescas wrote: > > > This patch series introduces the Page Alloc Hogger. The Page Alloc Hogger > > > allows you to allocate memory pages from specific nodes, zones, migration > > > types, and orders directly via debugfs. This provides key benefits for > > > testing and debugging: > > > > Would it be feasible to carry this as an OOT debugging module? Would a lot of > > symbols be missing to achieve that? > > > > Thanks David for the comment. > > The only symbol that would be needed to have this module as OOT is > "migratetype_names". I mean you could hardcode these and be pretty safe :) I don't we're going to add any time soon and if we did you'd probably need to change the module code anyway? I feel this debug module should be a noop in core. Cheers, Lorenzo