From: John Ogness <john.ogness@linutronix.de>
To: Andrew Murray <amurray@thegoodpenguin.co.uk>,
Benedikt Spranger <b.spranger@linutronix.de>
Cc: Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Russell King <linux@armlinux.org.uk>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Ray Jui <rjui@broadcom.com>,
Scott Branden <sbranden@broadcom.com>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Andrew Morton <akpm@linux-foundation.org>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Clark Williams <clrkwllms@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org,
linux-rt-devel@lists.linux.dev
Subject: Re: [PATCH v2 3/4] printk: nbcon: move printk_delay to console emiting code
Date: Tue, 07 Jul 2026 09:40:42 +0206 [thread overview]
Message-ID: <87v7aruub1.fsf@jogness.linutronix.de> (raw)
In-Reply-To: <CALqELGz-KSrGq5JYvLedZiO-p21pjpRKbceO+jiSfwZGyx+91Q@mail.gmail.com>
On 2026-07-06, Andrew Murray <amurray@thegoodpenguin.co.uk> wrote:
> If you want to ensure printk is synchronous, perhaps you could call
> nbcon_cpu_emergency_enter() prior to your printk, or perhaps there are
> already printk wrappers that do somthing similar whilst debugging?
> Would that provide a more reliable way to guarantee output?
Note that it is planned (at least on my TODO list) to introduce a "sync"
option for consoles for exactly this purpose. I talked about it here
[0].
John
[0] https://lore.kernel.org/lkml/87a6wez9s4.fsf@jogness.linutronix.de
next prev parent reply other threads:[~2026-07-07 7:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 16:35 [PATCH v2 0/4] printk: nbcon: deprecate boot_delay in favour of printk_delay Andrew Murray
2026-06-30 16:35 ` [PATCH v2 1/4] printk: remove BOOT_PRINTK_DELAY config option Andrew Murray
2026-06-30 16:35 ` [PATCH v2 2/4] printk: deprecate boot_delay in favour of printk_delay Andrew Murray
2026-07-08 15:01 ` Petr Mladek
2026-06-30 16:35 ` [PATCH v2 3/4] printk: nbcon: move printk_delay to console emiting code Andrew Murray
2026-07-03 12:57 ` John Ogness
2026-07-07 15:31 ` Petr Mladek
2026-07-08 10:36 ` John Ogness
2026-07-08 14:00 ` Petr Mladek
2026-07-03 14:56 ` Benedikt Spranger
2026-07-06 17:05 ` Andrew Murray
2026-07-07 7:34 ` John Ogness [this message]
2026-07-07 12:54 ` Benedikt Spranger
2026-07-07 15:04 ` Petr Mladek
2026-07-08 8:19 ` John Ogness
2026-07-08 14:26 ` Petr Mladek
2026-07-08 14:53 ` John Ogness
2026-07-08 15:09 ` Petr Mladek
2026-07-08 15:24 ` John Ogness
2026-06-30 16:36 ` [PATCH v2 4/4] Documentation/kernel-parameters: add/update printk_delay/boot_delay Andrew Murray
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