Re: [PATCH printk 0/3] Introduce sync mode

[John Ogness]

On 2026-07-10, John Ogness <john.ogness@xxxxxxxxxxxxx> wrote:
> As proposed in an LKML thread [0], here is a series to introduce a
> new console feature to use synchronous printing.

So the Sashiko review [0] found all kinds of issues and every one of
them are legitimate. In particular, I totally forgot about:

- the console_lock synchronization when boot consoles exist

- the various sites that _rely_ on kthreads printing when
  printk_get_console_flush_type() reports ft.nbcon_offload

I will consider each of the points mentioned by Sashiko and include my
proposed solution in my response. I will need a few days to go through
all of it.

John

[0] https://sashiko.dev/#/patchset/20260710144609.194487-1-john.ogness%40linutronix.de