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Subject: Re: [PATCH] char/random: silence a lockdep splat with printk()
From:   Qian Cai <cai@lca.pw>
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 <arnd@arndb.de>,
        gregkh@linuxfoundation.org, pmladek@suse.com,
        "Steven Rostedt (VMware)" <rostedt@goodmis.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>, dan.j.williams@intel.com,
        Peter Zijlstra <peterz@infradead.org>, longman@redhat.com,
        Thomas Gleixner <tglx@linutronix.de>,
        Linux-MM <linux-mm@kvack.org>,
        linux-arm-kernel@lists.infradead.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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References: <20191205010055.GO93017@google.com>
 <4F9E9335-334B-4600-8BC3-4AF91510D113@lca.pw>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Linus Torvalds <torvalds@linux-foundation.org>
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> On Dec 16, 2019, at 8:52 PM, Qian Cai <cai@lca.pw> wrote:
>=20
>=20
>=20
>> On Dec 4, 2019, at 8:00 PM, Sergey Senozhatsky =
<sergey.senozhatsky.work@gmail.com> wrote:
>>=20
>> A 'Reviewed-by' will suffice.
>>=20
>> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
>=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/=