linux-kernel - Re: [PATCH] char/random: silence a lockdep splat with printk()

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Message-Id: <1CA39814-DE67-4112-8F97-D62B9F47FF9D@lca.pw>
Date:   Thu, 2 Jan 2020 10:42:51 -0500
From:   Qian Cai <cai@....pw>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     tytso@....edu, Arnd Bergmann <arnd@...db.de>,
        gregkh@...uxfoundation.org, pmladek@...e.com,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, dan.j.williams@...el.com,
        Peter Zijlstra <peterz@...radead.org>, longman@...hat.com,
        Thomas Gleixner <tglx@...utronix.de>,
        Linux-MM <linux-mm@...ck.org>,
        linux-arm-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] char/random: silence a lockdep splat with printk()



> On Dec 16, 2019, at 8:52 PM, Qian Cai <cai@....pw> wrote:
> 
> 
> 
>> On Dec 4, 2019, at 8:00 PM, Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> wrote:
>> 
>> A 'Reviewed-by' will suffice.
>> 
>> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> 
> 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/