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 DC964C38145 for ; Thu, 8 Sep 2022 07:47:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1BA686B0072; Thu, 8 Sep 2022 03:47:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 144388D0002; Thu, 8 Sep 2022 03:47:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EFF286B0074; Thu, 8 Sep 2022 03:47:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id DE9526B0072 for ; Thu, 8 Sep 2022 03:47:57 -0400 (EDT) Received: from smtpin25.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id ACE0CAB730 for ; Thu, 8 Sep 2022 07:47:57 +0000 (UTC) X-FDA: 79888139394.25.144544B Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by imf27.hostedemail.com (Postfix) with ESMTP id 44384400C6 for ; Thu, 8 Sep 2022 07:47:57 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 116B433BAA; Thu, 8 Sep 2022 07:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1662623276; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=4+jY/L5+xe35wjNUaKjbU+iCet/hLbz6TyCvxP2dmm0=; b=q2uaKkC1rcu77DvPauruHEVNp78d3UcgHYo6roqYS04TbzQga+wo3gUgYM7xc8RTAbag0b Siee5YfUMtfmfxPxqkOhtZP8FU1vyGEbeWhPo02Tz2AY0PEdGFeJwOjRT85XiTIOJmldhN n8cvx7UnpYatYAeIOdBLBa+REawwQmI= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id DFAA713A6D; Thu, 8 Sep 2022 07:47:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id v6YhNiueGWPJGgAAMHmgww (envelope-from ); Thu, 08 Sep 2022 07:47:55 +0000 Date: Thu, 8 Sep 2022 09:47:55 +0200 From: Michal Hocko To: Kent Overstreet Cc: Steven Rostedt , Suren Baghdasaryan , Mel Gorman , Peter Zijlstra , Andrew Morton , Vlastimil Babka , Johannes Weiner , Roman Gushchin , Davidlohr Bueso , Matthew Wilcox , "Liam R. Howlett" , David Vernet , Juri Lelli , Laurent Dufour , Peter Xu , David Hildenbrand , Jens Axboe , mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, changbin.du@intel.com, ytcoode@gmail.com, Vincent Guittot , Dietmar Eggemann , Benjamin Segall , Daniel Bristot de Oliveira , Valentin Schneider , Christopher Lameter , Pekka Enberg , Joonsoo Kim , 42.hyeyoo@gmail.com, Alexander Potapenko , Marco Elver , Dmitry Vyukov , Shakeel Butt , Muchun Song , arnd@arndb.de, jbaron@akamai.com, David Rientjes , Minchan Kim , Kalesh Singh , kernel-team , linux-mm , iommu@lists.linux.dev, kasan-dev@googlegroups.com, io-uring@vger.kernel.org, linux-arch@vger.kernel.org, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, linux-modules@vger.kernel.org, LKML Subject: Re: [RFC PATCH 00/30] Code tagging framework and applications Message-ID: References: <20220905234649.525vorzx27ybypsn@kmo-framework> <20220906182058.iijmpzu4rtxowy37@kmo-framework> <20220907130323.rwycrntnckc6h43n@kmo-framework> <20220907094306.3383dac2@gandalf.local.home> <20220908063548.u4lqkhquuvkwzvda@kmo-framework> <20220908072950.yapakb5scocxezhy@kmo-framework> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220908072950.yapakb5scocxezhy@kmo-framework> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1662623277; a=rsa-sha256; cv=none; b=wyT+cH1K1agxoTjmWJWQeea+cYj2HTm5vWU83B1EGj/VASo+mVK86BJ/gQ//C8lkgVQQkT dxEWhd2PSoxIRAZ/LNvWHX7Evgj/pFTwzsqBZ90u5RZv5S8+zZQz+HyX8aivp1GiWQUfzd u3wMdeFxRYACCyMx52eDrnk7lgdaeow= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=q2uaKkC1; spf=pass (imf27.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.28 as permitted sender) smtp.mailfrom=mhocko@suse.com; dmarc=pass (policy=quarantine) header.from=suse.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1662623277; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=4+jY/L5+xe35wjNUaKjbU+iCet/hLbz6TyCvxP2dmm0=; b=WVdFExk5paeadHnXxCjtzZTXq+UotRZbewAY2kjjXcCblTlx3yum4AIMkiECUWMeAoiNfK idrR6tVASXczmLBTa3p5a0zc9N/xeveZnGGJ9Y/u+5BkOOt+xYSX6gW43mqWanLCcBHliJ 7f/NiUca2sMGnoBjKCM/iRTNiL/LG3g= X-Stat-Signature: g844uwb4weumc5hysexh4ajkndaze9s9 X-Rspamd-Queue-Id: 44384400C6 X-Rspamd-Server: rspam11 X-Rspam-User: Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=q2uaKkC1; spf=pass (imf27.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.28 as permitted sender) smtp.mailfrom=mhocko@suse.com; dmarc=pass (policy=quarantine) header.from=suse.com X-HE-Tag: 1662623277-466173 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 Thu 08-09-22 03:29:50, Kent Overstreet wrote: > On Thu, Sep 08, 2022 at 09:12:45AM +0200, Michal Hocko wrote: > > Then you have probably missed a huge part of my emails. Please > > re-read. If those arguments are not clear, feel free to ask for > > clarification. Reducing the whole my reasoning and objections to the > > sentence above and calling that vapid and lazy is not only unfair but > > also disrespectful. > > What, where you complained about slab's page allocations showing up in the > profile instead of slab, and I pointed out to you that actually each and every > slab call is instrumented, and you're just seeing some double counting (that we > will no doubt fix?) > > Or when you complained about allocation sites where it should actually be the > caller that should be instrumented, and I pointed out that it'd be quite easy to > simply change that code to use _kmalloc() and slab_tag_add() directly, if it > becomes an issue. > > Of course, if we got that far, we'd have this code to thank for telling us where > to look! > > Did I miss anything? Feel free to reponse to specific arguments as I wrote them. I won't repeat them again. Sure we can discuss how important/relevant those are. And that _can_ be a productive discussion. -- Michal Hocko SUSE Labs