Re: [PATCH net-next 2/2] netconsole: convert to NBCON console infrastructure

[Marcos Paulo de Souza <mpdesouza@suse.com>]

On Tue, 2026-01-06 at 07:43 -0800, Breno Leitao wrote:
> Hello Marcos,
> 
> On Fri, Jan 02, 2026 at 12:54:14AM -0300, Marcos Paulo de Souza
> wrote:
> > On Mon, 22 Dec 2025 06:52:11 -0800 Breno Leitao <leitao@debian.org>
> > wrote:
> > > +		if (!nbcon_enter_unsafe(wctxt))
> > > +			continue;
> > 
> > In this case, I believe that it should return directly? If it can't
> > enter in the
> > unsafe region the output buffer is not reliable anymore, so
> > retrying the send
> > the buffer to a different target isn't correct anymore. Petr, John,
> > do you
> > agree?
> 
> That makes sense. I undersatnd that the ownership will not be
> re-acquired here by just looping through the netconsole targets,
> right?

Yes, take a look into the drivers/tty/serial/*, some of the only
reacquire the context to reset some hardware registers, since the
printing context was lost. In this case, for you, I don't believe that
you can't continue trying to send data to other targets, since the
original data is gone.

In any case, the context reacquire method is nbcon_reacquire_nobuf.