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imf24.hostedemail.com; dkim=none; dmarc=none; spf=pass (imf24.hostedemail.com: domain of byungchul@sk.com designates 166.125.252.92 as permitted sender) smtp.mailfrom=byungchul@sk.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1717470651; a=rsa-sha256; cv=none; b=a6aNEiCjg8x+VCrzWcrpIuOZG5S3lVPoKLYP9KOQz5AnILX4D+O4Nt81H64zteaOFsZGCt GGt9LTBVFjsgJ4eL4zzdbljG/GWrMz4YF7/WrbEGbDXzUr46R2f+ir/RFzs732R0kMmTMm XLxy200RGIkOrwlI7xIV6/5gReqPido= 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> MIME-Version: 1.0 Content-Type: text/plain; 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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