From: Petr Mladek <pmladek@suse.com>
To: John Ogness <john.ogness@linutronix.de>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH printk v4 7/8] printk: nbcon: Add emit function and callback function for atomic printing
Date: Fri, 15 Sep 2023 10:21:04 +0200 [thread overview]
Message-ID: <ZQQT8B2LGJWY2gm5@alley> (raw)
In-Reply-To: <20230908185008.468566-8-john.ogness@linutronix.de>
On Fri 2023-09-08 20:56:07, John Ogness wrote:
> From: Thomas Gleixner <tglx@linutronix.de>
>
> Implement an emit function for nbcon consoles to output printk
> messages. It utilizes the lockless printk_get_next_message() and
> console_prepend_dropped() functions to retrieve/build the output
> message. The emit function includes the required safety points to
> check for handover/takeover and calls a new write_atomic callback
> of the console driver to output the message. It also includes
> proper handling for updating the nbcon console sequence number.
>
> A new nbcon_write_context struct is introduced. This is provided
> to the write_atomic callback and includes only the information
> necessary for performing atomic writes.
>
> Co-developed-by: John Ogness <john.ogness@linutronix.de>
> Signed-off-by: John Ogness <john.ogness@linutronix.de>
> Signed-off-by: Thomas Gleixner (Intel) <tglx@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Best Regards,
Petr
next prev parent reply other threads:[~2023-09-15 8:24 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-08 18:50 [PATCH printk v4 0/8] provide nbcon base John Ogness
2023-09-08 18:50 ` [PATCH printk v4 1/8] printk: Add non-BKL (nbcon) console basic infrastructure John Ogness
2023-09-08 18:50 ` [PATCH printk v4 2/8] printk: nbcon: Add acquire/release logic John Ogness
2023-09-14 13:16 ` Petr Mladek
2023-09-14 13:23 ` [PATCH v4 2+/8] " Petr Mladek
2023-09-15 17:01 ` John Ogness
2023-09-08 18:50 ` [PATCH printk v4 3/8] printk: Make static printk buffers available to nbcon John Ogness
2023-09-14 13:29 ` Petr Mladek
2023-09-08 18:50 ` [PATCH printk v4 4/8] printk: nbcon: Add buffer management John Ogness
2023-09-14 14:55 ` Petr Mladek
2023-09-08 18:50 ` [PATCH printk v4 5/8] printk: nbcon: Add ownership state functions John Ogness
2023-09-14 15:38 ` Petr Mladek
2023-09-08 18:50 ` [PATCH printk v4 6/8] printk: nbcon: Add sequence handling John Ogness
2023-09-14 16:02 ` Petr Mladek
2023-09-08 18:50 ` [PATCH printk v4 7/8] printk: nbcon: Add emit function and callback function for atomic printing John Ogness
2023-09-15 8:21 ` Petr Mladek [this message]
2023-09-08 18:50 ` [PATCH printk v4 8/8] printk: nbcon: Allow drivers to mark unsafe regions and check state John Ogness
2023-09-15 8:38 ` Petr Mladek
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