From: Petr Mladek <pmladek@suse.com>
To: Marcos Paulo de Souza <mpdesouza@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
John Ogness <john.ogness@linutronix.de>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Jason Wessel <jason.wessel@windriver.com>,
Daniel Thompson <danielt@kernel.org>,
Douglas Anderson <dianders@chromium.org>,
linux-kernel@vger.kernel.org,
kgdb-bugreport@lists.sourceforge.net
Subject: Re: [PATCH v4 2/5] printk: nbcon: Introduce KDB helpers
Date: Wed, 17 Sep 2025 13:16:41 +0200 [thread overview]
Message-ID: <aMqYmaqMSohDluhZ@pathway.suse.cz> (raw)
In-Reply-To: <20250915-nbcon-kgdboc-v4-2-e2b6753bb566@suse.com>
On Mon 2025-09-15 08:20:31, Marcos Paulo de Souza wrote:
> These helpers will be used when calling console->write_atomic on
> KDB code in the next patch. It's basically the same implementation
> as nbcon_device_try_acquire, but using NBCON_PRIO_EMERGENCY when
> acquiring the context.
>
> If the acquire succeeds, the message and message length are assigned to
> nbcon_write_context so ->write_atomic can print the message.
>
> After release try to flush the console since there may be a backlog of
> messages in the ringbuffer. The kthread console printers do not get a
> chance to run while kdb is active.
>
> Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Best Regards,
Petr
next prev parent reply other threads:[~2025-09-17 11:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-15 11:20 [PATCH v4 0/5] Handle NBCON consoles on KDB Marcos Paulo de Souza
2025-09-15 11:20 ` [PATCH v4 1/5] printk: nbcon: Export console_is_usable Marcos Paulo de Souza
2025-09-17 8:57 ` Petr Mladek
2025-09-17 12:21 ` Marcos Paulo de Souza
2025-09-17 14:07 ` Konstantin Ryabitsev
2025-09-18 13:02 ` Petr Mladek
2025-09-15 11:20 ` [PATCH v4 2/5] printk: nbcon: Introduce KDB helpers Marcos Paulo de Souza
2025-09-17 11:16 ` Petr Mladek [this message]
2025-09-15 11:20 ` [PATCH v4 3/5] printk: nbcon: Allow KDB to acquire the NBCON context Marcos Paulo de Souza
2025-09-17 12:09 ` Petr Mladek
2025-09-15 11:20 ` [PATCH v4 4/5] printk: nbcon: Export nbcon_write_context_set_buf Marcos Paulo de Souza
2025-09-17 12:18 ` Petr Mladek
2025-09-15 11:20 ` [PATCH v4 5/5] kdb: Adapt kdb_msg_write to work with NBCON consoles Marcos Paulo de Souza
2025-09-17 13:18 ` Petr Mladek
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aMqYmaqMSohDluhZ@pathway.suse.cz \
--to=pmladek@suse.com \
--cc=danielt@kernel.org \
--cc=dianders@chromium.org \
--cc=gregkh@linuxfoundation.org \
--cc=jason.wessel@windriver.com \
--cc=john.ogness@linutronix.de \
--cc=kgdb-bugreport@lists.sourceforge.net \
--cc=linux-kernel@vger.kernel.org \
--cc=mpdesouza@suse.com \
--cc=rostedt@goodmis.org \
--cc=senozhatsky@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.