linux-kernel - Re: [PATCH v6] random: defer fast pool mixing to worker

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Message-ID: <YgacTN2zHeBhWw5d@linutronix.de>
Date:   Fri, 11 Feb 2022 18:26:36 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Theodore Ts'o <tytso@....edu>,
        Sultan Alsawaf <sultan@...neltoast.com>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: [PATCH v6] random: defer fast pool mixing to worker

On 2022-02-11 18:17:57 [+0100], Jason A. Donenfeld wrote:
> On Fri, Feb 11, 2022 at 6:15 PM Sebastian Andrzej Siewior
> <bigeasy@...utronix.de> wrote:
> > A CPU hotplug notifier which removes unconditionally that bit when the
> > CPU goes down or sets it to 0.
> > We can keep it as it. Just an idea for later maybe ;)
> 
> I looked into it and it seemed like the plumbing was kind of miserable
> for that. If you want to take a stab, though, that might be an okay
> followup patch, and then we can assess atomics vs notifier. I think
> notifier will wind up being a lot clunkier, though.
> 
> Sounds like we should be all set for the v7 I sent out?

Sure. I can do the CPU-HP notifier later one once we are done with
everything. I acked the v7, don't see a road block.

> Jason

Sebastian