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smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com; spf=pass smtp.mailfrom=sk.com; arc=none smtp.client-ip=166.125.252.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sk.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sk.com X-AuditID: a67dfc5b-d6dff70000001748-2d-665e85b718cd Date: Tue, 4 Jun 2024 12:10:42 +0900 From: Byungchul Park To: Thomas Gleixner Cc: linux-kernel@vger.kernel.org, kernel_team@skhynix.com, torvalds@linux-foundation.org, damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, peterz@infradead.org, will@kernel.org, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, gregkh@linuxfoundation.org, kernel-team@lge.com, linux-mm@kvack.org, akpm@linux-foundation.org, mhocko@kernel.org, minchan@kernel.org, hannes@cmpxchg.org, vdavydov.dev@gmail.com, sj@kernel.org, jglisse@redhat.com, dennis@kernel.org, cl@linux.com, penberg@kernel.org, rientjes@google.com, vbabka@suse.cz, ngupta@vflare.org, linux-block@vger.kernel.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com, 42.hyeyoo@gmail.com, chris.p.wilson@intel.com, gwan-gyeong.mun@intel.com, max.byungchul.park@gmail.com, boqun.feng@gmail.com, longman@redhat.com, hdanton@sina.com, her0gyugyu@gmail.com Subject: Re: [PATCH v11 14/26] locking/lockdep, cpu/hotplus: Use a weaker annotation in AP thread Message-ID: <20240604031042.GB20371@system.software.com> References: <20240124115938.80132-1-byungchul@sk.com> <20240124115938.80132-15-byungchul@sk.com> <87il3ggfz9.ffs@tglx> Precedence: bulk X-Mailing-List: linux-ext4@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: <87il3ggfz9.ffs@tglx> User-Agent: Mutt/1.9.4 (2018-02-28) X-Brightmail-Tracker: H4sIAAAAAAAAA02SX0yTZxTGfd/vL501H53EdzCzpNvCAs6BkeS4mG3hZt/FFmdMZqJh2sGH NELVUlHMxlotBKsikiBQiZZKSgPMaiELDEqwRqD+7aDRFpGMDrMRinVo0Qrr1rKZeXPyy3Oe 8+S5ODyliDGpvFqjk7QaVbGSldGyuZUtH/ZUflOY5W5MgTMnsyDyrJqGZkcnC95LHQg6uw0Y Zq5/DvcXQggWb9+loKHei6Bl6iEF3UOTCFz2oyyMTa8CXyTMgqf+BAvHLjpY+GV2CcPE2ToM Hc4v4WatFcNg9HcaGmZYONdwDMfHHxiitnYObPr3IWg3c7A0lQ2eyXsMuMYzoen8BAv9Lg8N Qz1BDGM/N7Mw2fk3AzeHRmjwnjnFwI+PrSzMLtgosEXCHIwOWjBcNsaDqp7GGBg+NYihqvUK Bl+gD8FA9a8YnJ33WLgWCWHoctZT8LLtOoJgzRwHlSejHJwz1CA4UXmWhrt/DTNgnMiBxRfN 7Gcfi9dCYUo0dh0SXQsWWrxhJWKv+SEnGgfGOdHiPCh22TPEi/0zWGyZjzCis/04Kzrn6zjR NOfD4uM7dzhxpHGRFqd9DfirtB2yzQVSsbpM0n70yW5ZkW/uArffTB32PxjBejSETSiJJ8JG cqv2KHrFY6bAsk4L75GJQIxKMCukE78/usyrhQ/IldHxZaYEj4x4rbkJflPIJ4HfrjImxPNy Achw1doEKoQjpNuUknDIhWTiaZqm/73MIP7YDE5YKCGNtMX4hJwkKEldtZFNcIrwLhn8aThu kcWL9SURwxP3fy3fIlftfroWCebXYs2vxZr/j7Ugqh0p1JqyEpW6eOP6onKN+vD6/H0lThT/ Stv3Szt70Lx3mxsJPFKulGdZ8woVjKqstLzEjQhPKVfLayp2FirkBaryI5J23y7twWKp1I3S eFq5Rr5h4VCBQtij0kl7JWm/pH21xXxSqh4deOe7KebRp8H0b083lc0aXoZw7/OKgdZw7htt VQ7dlnUdXwRdUQ2XB+r0SyvyTstz1f3bHMyjVv3moj8bjf7tOZlB84oWPRVa3L1KpwgbArqt X2dv75PdaL21peLt7uMGf/YP7r6uTXWxDGF27ajdkuJz9IZyktub7qfm2y+Aki4tUmVnUNpS 1T9l0ZqOkQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA02SaUxTaRSG8313pbHMtYPxBp0YOxpNzbCoJMclbonx6ogaE0OCGw1epLKm FRQjClIQixJhgpWCUsFURBQpxHFksYJQiluVBikCAmIUBUnEMiLIDMUY/XPy5Jz3Ob9elpB1 U96sKvqgqI5WRsppCSnZsiLlj79T94T5/dW3GLJO+4HrUzoJ+WWlNNhvXENQWpmMob9hAzwf GUAw9ugJAfocO4JLPZ0EVDZ2IagpPkFDS58nOFxDNNhyMmhIKSqj4en7cQwd57IxXDMHwoOz hRgso29I0PfTkKdPwZPjLYZRUwkDpqT50FtsYGC8xx9sXa0U1F+wUVDTvghyL3bQUF1jI6Hx di+Gljv5NHSV/kfBg8YmEuxZZyi4/qGQhvcjJgJMriEGnlmMGG5qJ7+lDU9QYD1jwZB2uRyD w1mFoDa9G4O5tJWGetcAhgpzDgFfrjQg6M0cZCD19CgDecmZCDJSz5Hw5KuVAm1HAIx9zqfX rBDqB4YIQVtxSKgZMZJCcyEv/GPoZARtbTsjGM1xQkWxQiiq7sfCpY8uSjCXnKIF88dsRtAN OrDw4fFjRmg6P0YKfQ493jY7WLJynxipihfVvqtCJOGOwQIm1kAcbnvRhJNQI9YhD5bnlvIt OucUk9w8vsM5QbiZ5hbwbW2jU+zFLeTLn7VPMcHZJLy9cJ2bf+VCeeere5QOsayUA96a9psb ZdwRvlI3w52QctN5W24f+c1U8G0T/dgdIbhZ/JUJ1r324OR8drqWdvMM7nfecsuKzyKp4Sfb 8JNt+GEbEVGCvFTR8VFKVWSAjyYiPCFaddgnNCbKjCZ7Z0ocz7qNPrVsqEMci+TTpHB1d5iM UsZrEqLqEM8Sci9p5rGdYTLpPmXCEVEds1cdFylq6tAslpTPlG4KEkNk3H7lQTFCFGNF9fcr Zj28k1BPQPVYcmdEgfHPPb0NwbnDPuU+62/FrnL+8u/sd3SD1m/hgYD4uNXDx4+uTPRWeBc1 Byp2naweWlL1pXXTfcvmh5538l5nzI0I3dicvywTlfmmpAZx99Vpqw3mu8VrF2T7zqmt6A7M Wr553Var4WVUcOL2oFi9p7/ej7GFVPlft++IkZOacKW/glBrlP8D/IAG+XMDAAA= X-CFilter-Loop: Reflected On Fri, Jan 26, 2024 at 06:30:02PM +0100, Thomas Gleixner wrote: > > Furthermore, now that Dept was introduced, false positive alarms was > > reported by that. Replaced it with try lock annotation. > > I still have zero idea what this is about. Lockdep is working on lock/unlock, while dept is working on wait/event. Two are similar but strickly speaking, different in what to track. Byungchul