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 8DFD3C77B61 for ; Tue, 28 Mar 2023 17:52:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 295A66B0075; Tue, 28 Mar 2023 13:52:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 245AE900003; Tue, 28 Mar 2023 13:52:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 10DA5900002; Tue, 28 Mar 2023 13:52:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id F24226B0075 for ; Tue, 28 Mar 2023 13:52:15 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id C1A171A03E7 for ; Tue, 28 Mar 2023 17:52:15 +0000 (UTC) X-FDA: 80619051030.03.00A8C31 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf13.hostedemail.com (Postfix) with ESMTP id 1932320010 for ; Tue, 28 Mar 2023 17:52:13 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=BDH7Jj9z; spf=none (imf13.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1680025934; a=rsa-sha256; cv=none; b=6bSFuEO0epcBbtppixoI7GZpeyL8F2luwAXFXSrjH+Kj6B4xczq2/OuhFDGVkDjnH4xY9g r4E28pF+Q/D2P3NvGQxt0d1EQMu9N8hont9c6jtmnJb780xMFWNH1Ac+kcPmOUxRPPir89 FjIYL6PCKES5Y8TgI0tLLKgz8RtbErY= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=infradead.org header.s=bombadil.20210309 header.b=BDH7Jj9z; spf=none (imf13.hostedemail.com: domain of mcgrof@infradead.org has no SPF policy when checking 198.137.202.133) smtp.mailfrom=mcgrof@infradead.org; dmarc=fail reason="No valid SPF, DKIM not aligned (relaxed)" header.from=kernel.org (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1680025934; h=from:from:sender: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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Wb/aIRtlfC2C3jG+RF0MsyFF/Fo2UynqeVSoO8JS/Z0=; b=sj09HsIL122xeXxeSLLTtn+jfWtUK/UaOTZwRg/f3zOzBkso0Cna8r03AIj/hggii97lLX WHylxfB7evg2JDSgW1siqlae1a+XtUjXgKDkk6ofJ8v0wrnVdXvOq0q8exfvZI9no2vAhd 6cuMkZl+wamWlxhxpnqeUpgHbXf7L74= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Wb/aIRtlfC2C3jG+RF0MsyFF/Fo2UynqeVSoO8JS/Z0=; b=BDH7Jj9zHHGqSkhzkUwbaaJTaW zZy0Vq0AElAfWug2nRqiMnGVybq1k70DD/aaH6okrYWFkTIv58te1zfU4gbF8VBfWiWOxlQXLEQM8 tX8GW/0V0/YTCadI4GWiZ3y3NH59ZkeHPwCIEp5wYvVpI84TYiueVZZcCclEJ+Qevtd5/PZBxwNmN MKI68BLlJBNkZxDJiWdTMuy/+QSHYMnHJm8vnEe3gQFrrwkhrxAjmrrLIBvicGUDRJk3uYNor1zJT /jscjKxMdGcJzWdEOi68Vi+mwxb9uli63bpK9iF2Ygt/i08hqTWhLnn8LqDyU1MbfhdqFztuKM3yP HQBq/oSQ==; Received: from mcgrof by bombadil.infradead.org with local (Exim 4.96 #2 (Red Hat Linux)) id 1phDUO-00FNLk-0Q; Tue, 28 Mar 2023 17:52:08 +0000 Date: Tue, 28 Mar 2023 10:52:08 -0700 From: Luis Chamberlain To: Matthew Wilcox Cc: Mike Rapoport , Michal Hocko , linux-mm@kvack.org, Andrew Morton , Dave Hansen , Peter Zijlstra , Rick Edgecombe , Song Liu , Thomas Gleixner , Vlastimil Babka , linux-kernel@vger.kernel.org, x86@kernel.org, linux-modules@vger.kernel.org, Pankaj Raghav , Daniel Gomez , "kbus >> Keith Busch" , Davidlohr Bueso , Adam Manzanares , Kees Cook Subject: Re: [RFC PATCH 1/5] mm: intorduce __GFP_UNMAPPED and unmapped_alloc() Message-ID: References: <20230308094106.227365-1-rppt@kernel.org> <20230308094106.227365-2-rppt@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Queue-Id: 1932320010 X-Rspamd-Server: rspam01 X-Stat-Signature: wdp1thiyywwm18hrjdgmbsxqkpuwunrk X-HE-Tag: 1680025933-328204 X-HE-Meta: U2FsdGVkX18goo0LjoBWlTbWdTynNbdAmXjHikzp3H/8gNl0CIXAYjNjVO2/YL0ln9pSl9C7WglnemegqL4uq3QehtrLlwHzVtDTwV4+MhB1oFjxV4diQL+PGZfmJsIcNvxYHcIOE6frnlJUjE/wh3YaCWjE+w5x5obn2oD0ciNFpCYIYxKHnLd08SyUUdXU0GDS5jV9VsNpaT1WqnQCDVYKEG7k/wHoinrwbu0hfEnNcbhcMwj2sB6SCgXofiuN/OgyORUM4y6L5rEjUv/FnFDZm8HIH1MoYtH9AgbbVWBxSRkQ87PXsLMuQ2Snl1d3r4wQB5wkFC2Fic1ecVPOgqq8j/jid6Mii78dsNVxQmYYWKqM5bVfmoYpgCfJ7ZI4bDsBD33NHyFtLv8wf1cRzOtb5DIVEk0c7ldmXZ/9ewtZsE+6Yl75GzF5OK3yY2WExyBSLGbMbaKVMAaZgGXwUzb6Kibb/wI2U49vSzWQrz4jg8poiqFS79yuNPf2+mGnpOvNCMy7MebvtGhur+78AppFpGnHL0qbmLcSLluGFzThuLgmYe+e7oek4rlcd9eG3fF0V4k2wGK+Ezt64R5m/zSIsQ5MubhZccgwub32GmvDtZm9B6cF7gmUcQqv6Px8oia8p9zrioqAuDJ/RDw2gxWWwg6dwasZd5wIPER/taIVWkQLRo9NMtDlJ+jWotlwOVt8y2NZ6pQdY1zRuRlm+xjclpKtOnVnTx4fKfHhB7MO+yDMQSn2NSyeSWFMW0syrTaZHUCfh8Twn+/ZvcxvC/5Ij+PQWwU83v9tu65zmGbI1TEJdGTXvgPkG63uhduhh1vFdOMtJfr6iVkd4rJscrwTkM8OcM80nlTLW3+KyFRkjLlctxB0LxEg1GglCnlrwA6ndzZce8X0318zMNjYReE6Jgez/QQprTX5lv1oEHtT58CxHfn5B/j+6vJd7uO5/y6NhkYDIETjKMKnlHH 5/leI0Sv dMlLg77a8Xac+UY7Y/Yur/eI+QnhiS8smpvdtaGj/28aQTjMpT36efpkoMf+0YQ8TdSXIVrhBl7HGuulROchD/Abw73yKa/ZPVwEZAMLRvEB4JJNnvIlQywoniF+glcW/BhZwBx8PybRqP0fdUi2GKiNOtN3qhrcu/cxfN2bR0iixxscxTw/9Yqqqk9C4P2vchRGpNiN79Zs0YHJy3gyzkYcfL4vXw57K5ckshlGf4FuatDj6N8e7igcS1S6heM/syt8WA+07vm1rxs2fqQn6BXYwjCIgbNszGAO7UqOpGUEMyNHdxWaLJ/4U1xXwEcaskW9JL/aCxWR9IW+jGi2LCgGfOSS7cLcHq/beo/Iuyzo+eNhWH/YmwGWeVA== 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, Mar 28, 2023 at 06:37:13PM +0100, Matthew Wilcox wrote: > On Tue, Mar 28, 2023 at 10:18:50AM -0700, Luis Chamberlain wrote: > > differences with eBPF programs is that modules *can* be rather large > > in size. What is the average size of modules? Well let's take a look: > > > > mcgrof@bigtwin /mirror/code/mcgrof/linux-next (git::master)$ find ./ > > -name \*.ko| wc -l > > 9173 > > ummm ... wc -c, surely? That's the number of allmodconfig modules found. mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2 ./arch/x86/crypto/twofish-x86_64.ko ./arch/x86/crypto/serpent-avx2.ko mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2 | wc -l 2 mcgrof@fulton ~/linux (git::sysctl-next)$ find ./ -name \*.ko| head -2 | wc -c 70 wc -c would give a lot more. wc -l gives me the module count. > > mcgrof@bigtwin /mirror/code/mcgrof/linux-next (git::master)$ find ./ > > -name \*.ko| xargs stat -c "%s - %n" | sort -n -k 1 -r | tail > > -$((9173-5)) | awk 'BEGIN {sum=0} {sum+=$1} END {print sum/NR/1024}' > > 160.54 > > ... which invalidates all of these. Not sure ? But regardless the *.text* lookup is what we care for though which was later. Luis