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

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Message-ID: <CAHmME9rsOWuprpYqo9G9eUboQwUxRgWqYRYgyHG7cNOG16c5EA@mail.gmail.com>
Date:   Sun, 13 Feb 2022 18:37:33 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
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 Fri, Feb 11, 2022 at 5:59 PM Sebastian Andrzej Siewior
<bigeasy@...utronix.de> wrote:
> > > What do we do here vs RT? I suggested this
> > >   https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/commit/?id=a2d2d54409481aa23a3e11ab9559a843e36a79ec
> > >
> > > Is this doable?
> >
> > It might be, but last time I checked it seemed problematic. As I
> > mentioned in an earlier thread, I'll take a look again at that next
> > week after this patch here settles. Haven't forgotten.
>
> Ah, cheers.

I started looking at this and came up with this draft with questions:
https://git.kernel.org/pub/scm/linux/kernel/git/crng/random.git/commit/?h=jd/no-irq-trylocks

Some research remains...

Jason