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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9963AECAAD1 for ; Wed, 31 Aug 2022 15:56:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231929AbiHaP4R (ORCPT ); Wed, 31 Aug 2022 11:56:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37656 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232255AbiHaPzq (ORCPT ); Wed, 31 Aug 2022 11:55:46 -0400 Received: from mail-yw1-x112a.google.com (mail-yw1-x112a.google.com [IPv6:2607:f8b0:4864:20::112a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE6C9268 for ; Wed, 31 Aug 2022 08:55:36 -0700 (PDT) Received: by mail-yw1-x112a.google.com with SMTP id 00721157ae682-33dce2d4bc8so311347977b3.4 for ; Wed, 31 Aug 2022 08:55:36 -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=vT8H34yYszJU7jW+cK1UDQmF84ynecXwP7MPDNfycFpwUc7ERpnzCFoqayCmeVbfhp v+n9NYf2UJ/s+lMNYxHaD0xjGv6VvDwyVnPrn+jtsIDSbZ2kR5KgQ9CFT7Ec97nkkyJY 6eTDoSxnllUtA5CQAHOSBIQeMR4unb1a7HDUvr6lG2wTo3gapQZtfFRFyxLEFaVQHnBq Bxg/RWZKNfV+g+HAeI1Eu47ZC6TJwLS/Eua5VuLq1DUudA0DQ+AHLBpOYWJyvvv7ANt8 DUQCwncrGmc0LB8+h6WIIoeiW3ztVk+RY716IhCZud03HtVlrs+PqAOWmUjC7MIvs500 LwsQ== X-Gm-Message-State: ACgBeo0jVW3D0LCXEIVL/ApXZl3W/sxAaBAeS2WrmXOwlUnwPICrwBda BD3/b5SxzQdsyeSRF7teHKqtOf0zB42oGkdC0SitSQ== 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" Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org 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