Received: by 2002:a05:7412:3b8b:b0:fc:a2b0:25d7 with SMTP id nd11csp3009885rdb; Tue, 13 Feb 2024 04:25:37 -0800 (PST) X-Google-Smtp-Source: AGHT+IHuk8QZDwG2HDIF9OnAiuIIHbQgTs0S4iXTitpUrxwfWS4KCmxdYvXLchhFZoF/Y7E1w6dD X-Received: by 2002:a17:902:f809:b0:1d9:427a:99b with SMTP id ix9-20020a170902f80900b001d9427a099bmr8484372plb.32.1707827137112; Tue, 13 Feb 2024 04:25:37 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1707827137; cv=pass; d=google.com; s=arc-20160816; b=zZXpKkTzjfnOFqycc0fSk5rWzEa3CxEB8Q6K+exjEvioMOVDdnPv3Mj+z6680L3vEM PQEXsrAWB1ggcauHsA/RjLsPqUnceHqlGqS/3DGNoyw8hmyo9Hm6S9YazNzARyHoojzo msPtlO7y8xkTp5vZXsOz6fXPhLBMPdu3q1UDwMH1Y7jR+qoUA6n20s2YVhtirLIQAKOa 4E7xZ5NKuNDYDUV2i3K3TU22bfvS8Tot4jpaEMaGb+FXen9EsIX1mp2rMjmsdttQ6O1U QRy0w8/hbqZNoeUCvcXU4r4APwll+SPmPoe7MBuFHEguqFV8Nwp00g0wIcijTh8XSqti CGFg== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=in-reply-to:content-disposition:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:message-id:subject:cc :to:from:date:dkim-signature:dkim-signature; bh=zXbOiQIN7neMTyajtp5U/4Xc00nM1Z7564QKlnGLw3E=; fh=ZWwtefVXLuTRAAGZ/+vHX49lomXQVWYgQX2AAL7zSkc=; b=YPwpV8/E/j9lfwAz2ECqqIgW0/mt8Yaf9Rf/ghrq3Jetrm94DZF0wNM0/dE/LN59d9 3Jth44b77EppVXD0rIvRoq9IWQ1ogNC/7x/OOkahiUPsyi/rOhwtcaovp3C9g3JXJ8WM E5grt3VKxxzIDssvUBemWrSsQlxLyBlhS18A+5XIRK24YwPUJ5syukJ/HgPxBvCvIb2m vjvwkta6rLn7TyEm7ZUCRfUk6Z/ilh6uBhukjzu/fWGh8Hg9MTGxHxJ6aaCpshVW4OvK bRv+4BCJm9deNQ1KkI+N/+a+a4h4asYs5T2Gz/fhxd3TQU/o+DY85y38v8eg2EcxyZCt SS7g==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b="oPNMu0/3"; dkim=pass header.i=@suse.com header.s=susede1 header.b="oPNMu0/3"; arc=pass (i=1 spf=pass spfdomain=suse.com dkim=pass dkdomain=suse.com dkim=pass dkdomain=suse.com dmarc=pass fromdomain=suse.com); spf=pass (google.com: domain of linux-kernel+bounces-63500-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-63500-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com X-Forwarded-Encrypted: i=2; AJvYcCWE7+RFtpmqFz+gtjxfcyQABzI8VmGS+zKB+2qYFj5wXppVAww5JqF73Kx7AjE5fo6VvC8mvV26ZQXfB/DjSicgPKA+JVKLqeOTQQjFUw== Return-Path: Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. [2604:1380:40f1:3f00::1]) by mx.google.com with ESMTPS id ix6-20020a170902f80600b001d8e974ed24si1924118plb.626.2024.02.13.04.25.36 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Feb 2024 04:25:37 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-63500-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b="oPNMu0/3"; dkim=pass header.i=@suse.com header.s=susede1 header.b="oPNMu0/3"; arc=pass (i=1 spf=pass spfdomain=suse.com dkim=pass dkdomain=suse.com dkim=pass dkdomain=suse.com dmarc=pass fromdomain=suse.com); spf=pass (google.com: domain of linux-kernel+bounces-63500-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-63500-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id ABB1AB2173F for ; Tue, 13 Feb 2024 12:24:33 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8C61E40BFE; Tue, 13 Feb 2024 12:24:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="oPNMu0/3"; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="oPNMu0/3" Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9875A3D54D; Tue, 13 Feb 2024 12:24:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707827060; cv=none; b=MjomBmL9hWZIn8O0IV04LYrGCrDyNhTyinNP9Lf8fUYMDW1sboG0yAU/9TWOCqtVEmi+9FTYqqQe0hGYL2Xr0gqXbbWZu9kUVI/1leuKyP+8GyKpWYwMZyytwxflaLONH0XC4UYz8n25Dx8mQDV609Rc6JS6/GCv1jtHTcQOC1Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707827060; c=relaxed/simple; bh=KM6zxaaoOFSyFZ5noXN1PyDk4COINjZTnbDT7nk2jc4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nMROOOTTV6lrv4shUBU+r4D0+Omp/kAQe8tHl6VSmKumRzuuypBqZ9ZOKctQVpPmTnPnVfwoTJOJ5a4iBFHAqpupYxocioQPsPh7iNF13zxe0oeieoI+FCx1TROhqYg083xLwv1xMCx5r5qhA2aL+3M0JmgxhIaugBrXSi5KIls= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=oPNMu0/3; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=oPNMu0/3; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id B2D4722206; Tue, 13 Feb 2024 12:24:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1707827056; 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=zXbOiQIN7neMTyajtp5U/4Xc00nM1Z7564QKlnGLw3E=; b=oPNMu0/3kyHrjKXlmWcSVvIaXSDVbOqkAyBWw+GM976X053z77ogsr0EDbHX/7ytpQYyy9 SyG7mHOiNYd83sIJtiREPWMY5thldH58zWZvsioUSDVozZuC7lw84nRpXvaSjzQ83Bc875 OeMyCboEUx7oHjBoCcViZ4MERhSiPOw= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1707827056; 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=zXbOiQIN7neMTyajtp5U/4Xc00nM1Z7564QKlnGLw3E=; b=oPNMu0/3kyHrjKXlmWcSVvIaXSDVbOqkAyBWw+GM976X053z77ogsr0EDbHX/7ytpQYyy9 SyG7mHOiNYd83sIJtiREPWMY5thldH58zWZvsioUSDVozZuC7lw84nRpXvaSjzQ83Bc875 OeMyCboEUx7oHjBoCcViZ4MERhSiPOw= Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 8BA931370C; Tue, 13 Feb 2024 12:24:16 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 4rhuIXBfy2WUCAAAD6G6ig (envelope-from ); Tue, 13 Feb 2024 12:24:16 +0000 Date: Tue, 13 Feb 2024 13:24:11 +0100 From: Michal Hocko To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, kent.overstreet@linux.dev, vbabka@suse.cz, hannes@cmpxchg.org, roman.gushchin@linux.dev, mgorman@suse.de, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, corbet@lwn.net, void@manifault.com, peterz@infradead.org, juri.lelli@redhat.com, catalin.marinas@arm.com, will@kernel.org, arnd@arndb.de, tglx@linutronix.de, mingo@redhat.com, dave.hansen@linux.intel.com, x86@kernel.org, peterx@redhat.com, david@redhat.com, axboe@kernel.dk, mcgrof@kernel.org, masahiroy@kernel.org, nathan@kernel.org, dennis@kernel.org, tj@kernel.org, muchun.song@linux.dev, rppt@kernel.org, paulmck@kernel.org, pasha.tatashin@soleen.com, yosryahmed@google.com, yuzhao@google.com, dhowells@redhat.com, hughd@google.com, andreyknvl@gmail.com, keescook@chromium.org, ndesaulniers@google.com, vvvvvv@google.com, gregkh@linuxfoundation.org, ebiggers@google.com, ytcoode@gmail.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, bristot@redhat.com, vschneid@redhat.com, cl@linux.com, penberg@kernel.org, iamjoonsoo.kim@lge.com, 42.hyeyoo@gmail.com, glider@google.com, elver@google.com, dvyukov@google.com, shakeelb@google.com, songmuchun@bytedance.com, jbaron@akamai.com, rientjes@google.com, minchan@google.com, kaleshsingh@google.com, kernel-team@android.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, kasan-dev@googlegroups.com, cgroups@vger.kernel.org Subject: Re: [PATCH v3 00/35] Memory allocation profiling Message-ID: References: <20240212213922.783301-1-surenb@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240212213922.783301-1-surenb@google.com> X-Spam-Level: Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.com header.s=susede1 header.b="oPNMu0/3" X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.07 / 50.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; TO_DN_SOME(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[suse.com:+]; MX_GOOD(-0.01)[]; RCPT_COUNT_GT_50(0.00)[73]; NEURAL_HAM_SHORT(-0.20)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; BAYES_HAM(-0.06)[60.75%]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; RCVD_DKIM_ARC_DNSWL_HI(-1.00)[]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_MED(-2.00)[suse.com:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:106:10:150:64:167:received]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim]; FUZZY_BLOCKED(0.00)[rspamd.com]; MID_RHS_NOT_FQDN(0.50)[]; FREEMAIL_CC(0.00)[linux-foundation.org,linux.dev,suse.cz,cmpxchg.org,suse.de,stgolabs.net,infradead.org,oracle.com,lwn.net,manifault.com,redhat.com,arm.com,kernel.org,arndb.de,linutronix.de,linux.intel.com,kernel.dk,soleen.com,google.com,gmail.com,chromium.org,linuxfoundation.org,linaro.org,goodmis.org,linux.com,lge.com,bytedance.com,akamai.com,android.com,vger.kernel.org,lists.linux.dev,kvack.org,googlegroups.com]; RCVD_TLS_ALL(0.00)[]; SUSPICIOUS_RECIPS(1.50)[]; RCVD_IN_DNSWL_HI(-0.50)[2a07:de40:b281:104:10:150:64:97:from] X-Spam-Score: -3.07 X-Rspamd-Queue-Id: B2D4722206 X-Spam-Flag: NO On Mon 12-02-24 13:38:46, Suren Baghdasaryan wrote: [...] > We're aiming to get this in the next merge window, for 6.9. The feedback > we've gotten has been that even out of tree this patchset has already > been useful, and there's a significant amount of other work gated on the > code tagging functionality included in this patchset [2]. I suspect it will not come as a surprise that I really dislike the implementation proposed here. I will not repeat my arguments, I have done so on several occasions already. Anyway, I didn't go as far as to nak it even though I _strongly_ believe this debugging feature will add a maintenance overhead for a very long time. I can live with all the downsides of the proposed implementation _as long as_ there is a wider agreement from the MM community as this is where the maintenance cost will be payed. So far I have not seen (m)any acks by MM developers so aiming into the next merge window is more than little rushed. > 81 files changed, 2126 insertions(+), 695 deletions(-) -- Michal Hocko SUSE Labs