Re: [PATCH] random: Initialize vsprintf's pointer hash once the random core is ready.

[Jason A. Donenfeld]

Hi Sebastian,

On Fri, Jul 29, 2022 at 12:21:27PM +0200, Sebastian Andrzej Siewior wrote:
> So launching a worker to obtain the random data? That would mean that
> the first %p print won't have nothing, right? I could do it as part of

"First" isn't very meaningful here. If the rng isn't initialized by
add_bootloader_randomness() or similar, then it'll almost miss some
amount of %p anyway.

But anyway, it sounds like you only need to hoist into a worker IF
you're `IS_ENABLED(CONFIG_PREEMPT_RT) && in_hardirq()`, right? So just
conditionalize it on that, and this should have pretty minimal impact.

I don't think this patch will require touching random.c.

Jason