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Fri, 04 Mar 2022 11:29:02 -0800 (PST) Subject: Re: [PATCH v4 16/24] locking/lockdep, cpu/hotplus: Use a weaker annotation in AP thread To: Byungchul Park , torvalds@linux-foundation.org Cc: damien.lemoal@opensource.wdc.com, linux-ide@vger.kernel.org, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org, mingo@redhat.com, linux-kernel@vger.kernel.org, peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, chris@chris-wilson.co.uk, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, bfields@fieldses.org, 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, paolo.valente@linaro.org, josef@toxicpanda.com, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, jack@suse.com, jlayton@kernel.org, dan.j.williams@intel.com, hch@infradead.org, djwong@kernel.org, dri-devel@lists.freedesktop.org, airlied@linux.ie, rodrigosiqueiramelo@gmail.com, melissa.srw@gmail.com, hamohammed.sa@gmail.com References: <1646377603-19730-1-git-send-email-byungchul.park@lge.com> <1646377603-19730-17-git-send-email-byungchul.park@lge.com> From: Sergei Shtylyov Message-ID: Date: Fri, 4 Mar 2022 22:28:57 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <1646377603-19730-17-git-send-email-byungchul.park@lge.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: C9C8AC0019 X-Rspam-User: Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=M6uJy3ji; spf=pass (imf22.hostedemail.com: domain of sergei.shtylyov@gmail.com designates 209.85.218.44 as permitted sender) smtp.mailfrom=sergei.shtylyov@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Stat-Signature: ow7r8rj3iub5ti19ejoah86whsmn4mxu X-HE-Tag: 1646422144-632307 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 3/4/22 10:06 AM, Byungchul Park wrote: > cb92173d1f0 (locking/lockdep, cpu/hotplug: Annotate AP thread) was You need to enclose the commit summary in (""), not just (). :-) > introduced to make lockdep_assert_cpus_held() work in AP thread. > > However, the annotation is too strong for that purpose. We don't have to > use more than try lock annotation for that. > > Furthermore, now that Dept was introduced, false positive alarms was > reported by that. Replaced it with try lock annotation. > > Signed-off-by: Byungchul Park [...] MBR, Sergey