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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id z4sm15110820qkz.62.2020.01.02.07.42.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 02 Jan 2020 07:42:53 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.0 \(3608.40.2.2.4\)) Subject: Re: [PATCH] char/random: silence a lockdep splat with printk() From: Qian Cai In-Reply-To: <4F9E9335-334B-4600-8BC3-4AF91510D113@lca.pw> Date: Thu, 2 Jan 2020 10:42:51 -0500 Cc: tytso@mit.edu, Arnd Bergmann , gregkh@linuxfoundation.org, pmladek@suse.com, "Steven Rostedt (VMware)" , Catalin Marinas , Will Deacon , dan.j.williams@intel.com, Peter Zijlstra , longman@redhat.com, Thomas Gleixner , Linux-MM , linux-arm-kernel@lists.infradead.org, Linux Kernel Mailing List Content-Transfer-Encoding: quoted-printable Message-Id: <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw> References: <20191205010055.GO93017@google.com> <4F9E9335-334B-4600-8BC3-4AF91510D113@lca.pw> To: Sergey Senozhatsky , Andrew Morton , Linus Torvalds X-Mailer: Apple Mail (2.3608.40.2.2.4) 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: Archived-At: List-Archive: List-Post: > On Dec 16, 2019, at 8:52 PM, Qian Cai wrote: >=20 >=20 >=20 >> On Dec 4, 2019, at 8:00 PM, Sergey Senozhatsky = wrote: >>=20 >> A 'Reviewed-by' will suffice. >>=20 >> Reviewed-by: Sergey Senozhatsky >=20 > Ted, could you take a look at this trivial patch? Not sure if Ted is still interested in maintaining this file as he had = no feedback for more than a month. The problem is that this will render the lockdep useless = for a general debugging tool as it will disable the lockdep early in the process. Could Andrew (since the free page shuffle will call get_random) or Linus = pick this up directly with the approval from one of the printk() maintainers above? = https://lore.kernel.org/lkml/1573679785-21068-1-git-send-email-cai@lca.pw/=