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 234BDECAAD4 for ; Wed, 31 Aug 2022 15:55:37 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A497B8D0001; Wed, 31 Aug 2022 11:55:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9F8936B0072; Wed, 31 Aug 2022 11:55:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8C09E8D0001; Wed, 31 Aug 2022 11:55:36 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 7E1976B0071 for ; Wed, 31 Aug 2022 11:55:36 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 33BE5120774 for ; Wed, 31 Aug 2022 15:55:36 +0000 (UTC) X-FDA: 79860337872.02.E51935E Received: from mail-yw1-f182.google.com (mail-yw1-f182.google.com [209.85.128.182]) by imf23.hostedemail.com (Postfix) with ESMTP id E54FB14004B for ; Wed, 31 Aug 2022 15:55:35 +0000 (UTC) Received: by mail-yw1-f182.google.com with SMTP id 00721157ae682-3413ad0640dso156030407b3.13 for ; Wed, 31 Aug 2022 08:55:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc; bh=sybFcqH1KKlLZJ30kAOhH4vwj7X3FRQlsLR8cFlMDYU=; b=ONehLJlMia7mkVvk2Zcl9HnY/oTkc+1EwkoR6Jx3DnNxre4Sp/FSdNv9mcbGgEmDyx hcwrMSJR7ZiQ1gQ0UYolLJ1KfSsEifqyTyCpB3HNLZA2KMDBC4nzkHtXo4jdW5MEBTL/ oeY/VF0jamX2X6EV+5N0Xd7mZ1j4MlgintI5pKX6sIFdlOA1BP37vU/laD/NgNYsqPs7 ry3YkegZ8oI5uWS54z5Ryp1YEZwXewCN8pUvCwKMKDNaZ0LFaWzFXYjHfSoj16inAquU wnZgCdGNLRRqt1agsDuWNICevBAb1Fc4Vo2v2Ob02GeQiQO1vTHDvn4tcp5ikcEVDh90 MGRQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc; bh=sybFcqH1KKlLZJ30kAOhH4vwj7X3FRQlsLR8cFlMDYU=; b=Z51VFIE1/vPpXls9GXbhpLIuV3UEeFZlV8K9SB7em+btF6W3lebGxTdpvz97eNlalW g8X3vpxxuRG8O5fS3KcP1A8wc6ms/O2sJDhfBJnBqWtpV/h/bhuSv81vtZnsNZmdLMOM lVl6MOWQz+P19gzyDDx+oItzCgha/P9R2XUAkaiF1Qi1LMGKl/G2wA+lRpZG+SfAfpxV YyfUEV7Du9OuEbNdbwbz7cB63lD49aeGXUk+Y3bGBbDRIrdp0bVUQJ7oYsx6kOcLdfgI yWrQtYIPA/53BWSCnKmHCMgMoqUVADs+l6zSBK4tr3+L5pvHHCQpGXOvmK3fKo2upDLd Q7Qg== X-Gm-Message-State: ACgBeo1Yj+c37Q34oSAkQ2Pw/4bZ08A6x7l4y9aydMqel1NO2aO740qQ LAx42+XLao58QraUQmYR1FroMdssMKDO0gyCgaoaPg== X-Google-Smtp-Source: AA6agR4NChdz7hhi2/Bkod2bRWHC00+BPJkQJe+enovUPIqOU12s621gnom9CkqxdAsQy2M3vDnXK/nOmkkUrisgkSc= X-Received: by 2002:a81:a186:0:b0:33d:bf97:5b14 with SMTP id y128-20020a81a186000000b0033dbf975b14mr18636737ywg.514.1661961335065; Wed, 31 Aug 2022 08:55:35 -0700 (PDT) MIME-Version: 1.0 References: <20220830214919.53220-1-surenb@google.com> <20220830214919.53220-28-surenb@google.com> <241c05a3-52a2-d49f-6962-3af5a94bc3fc@infradead.org> In-Reply-To: <241c05a3-52a2-d49f-6962-3af5a94bc3fc@infradead.org> From: Suren Baghdasaryan Date: Wed, 31 Aug 2022 08:55:24 -0700 Message-ID: Subject: Re: [RFC PATCH 27/30] Code tagging based latency tracking To: Randy Dunlap Cc: Andrew Morton , Kent Overstreet , Michal Hocko , Vlastimil Babka , Johannes Weiner , Roman Gushchin , Mel Gorman , Davidlohr Bueso , Matthew Wilcox , "Liam R. Howlett" , David Vernet , Peter Zijlstra , 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 , Steven Rostedt , Benjamin Segall , Daniel Bristot de Oliveira , Valentin Schneider , Christopher Lameter , Pekka Enberg , Joonsoo Kim , 42.hyeyoo@gmail.com, Alexander Potapenko , Marco Elver , dvyukov@google.com, 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 Content-Type: text/plain; charset="UTF-8" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1661961335; 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=sybFcqH1KKlLZJ30kAOhH4vwj7X3FRQlsLR8cFlMDYU=; b=f/8NDqedXciALtKcWi4xzWJWMEPUaiswvwT26JyQu07kL6cp3LjBhIj1RG/BEk1Z8AQdrt oqWR7w1lCNvxlbWsENbbdSas+bHymZo4oFhGswbgBedBO8piNHmgfT5lA/NhDcEAL2ZmKL nMUnKapK8MY6J55FeHPgqdhww4D3kew= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=ONehLJlM; spf=pass (imf23.hostedemail.com: domain of surenb@google.com designates 209.85.128.182 as permitted sender) smtp.mailfrom=surenb@google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1661961335; a=rsa-sha256; cv=none; b=m0prkl7YrBNsTefw3Fpp/+BS2SMHhF+eI8GPiMl4gHVCaHssxVaTqwss1IXpiNq9d7pwQH QZ89ofDdt+Gu822oYcleeWHjSZvpA/YQiHqFk/GtFoPpoeNuPiK48ZwjImd4aJfuQcC+Jp VsXItEPVaaj00KiCgAeGi1hS8CPlcOA= X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: E54FB14004B X-Rspam-User: Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=ONehLJlM; spf=pass (imf23.hostedemail.com: domain of surenb@google.com designates 209.85.128.182 as permitted sender) smtp.mailfrom=surenb@google.com; dmarc=pass (policy=reject) header.from=google.com X-Stat-Signature: 5n85aqtj4fnpee7gdzhhtjam3xwe8jh1 X-HE-Tag: 1661961335-316748 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, Aug 30, 2022 at 6:53 PM Randy Dunlap wrote: > > > > On 8/30/22 14:49, Suren Baghdasaryan wrote: > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > > index b7d03afbc808..b0f86643b8f0 100644 > > --- a/lib/Kconfig.debug > > +++ b/lib/Kconfig.debug > > @@ -1728,6 +1728,14 @@ config LATENCYTOP > > Enable this option if you want to use the LatencyTOP tool > > to find out which userspace is blocking on what kernel operations. > > > > +config CODETAG_TIME_STATS > > + bool "Code tagging based latency measuring" > > + depends on DEBUG_FS > > + select TIME_STATS > > + select CODE_TAGGING > > + help > > + Enabling this option makes latency statistics available in debugfs > > Missing period at the end of the sentence. Ack. > > -- > ~Randy