From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: John Ogness <john.ogness@linutronix.de>
Cc: Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org, Jiri Slaby <jirislaby@kernel.org>,
linux-serial@vger.kernel.org
Subject: Re: [PATCH printk v4 08/27] serial: core: Provide low-level functions to lock port
Date: Tue, 9 Apr 2024 15:23:10 +0200 [thread overview]
Message-ID: <2024040900-pavestone-flagman-fbf9@gregkh> (raw)
In-Reply-To: <20240402221129.2613843-9-john.ogness@linutronix.de>
On Wed, Apr 03, 2024 at 12:17:10AM +0206, John Ogness wrote:
> It will be necessary at times for the uart nbcon console
> drivers to acquire the port lock directly (without the
> additional nbcon functionality of the port lock wrappers).
> These are special cases such as the implementation of the
> device_lock()/device_unlock() callbacks or for internal
> port lock wrapper synchronization.
>
> Provide low-level variants __uart_port_lock_irqsave() and
> __uart_port_unlock_irqrestore() for this purpose.
>
> Signed-off-by: John Ogness <john.ogness@linutronix.de>
> ---
> include/linux/serial_core.h | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2024-04-09 13:23 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-02 22:11 [PATCH printk v4 00/27] wire up write_atomic() printing John Ogness
2024-04-02 22:11 ` [PATCH printk v4 01/27] printk: Add notation to console_srcu locking John Ogness
2024-04-02 22:11 ` [PATCH printk v4 02/27] printk: Properly deal with nbcon consoles on seq init John Ogness
2024-04-05 15:37 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 03/27] printk: nbcon: Remove return value for write_atomic() John Ogness
2024-04-08 13:17 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 04/27] printk: Check printk_deferred_enter()/_exit() usage John Ogness
2024-04-02 22:11 ` [PATCH printk v4 05/27] printk: nbcon: Add detailed doc for write_atomic() John Ogness
2024-04-08 15:20 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 06/27] printk: nbcon: Add callbacks to synchronize with driver John Ogness
2024-04-09 9:20 ` Petr Mladek
2024-04-16 15:01 ` John Ogness
2024-04-17 13:03 ` Petr Mladek
2024-04-17 14:54 ` John Ogness
2024-04-18 10:33 ` Petr Mladek
2024-04-18 12:10 ` John Ogness
2024-04-18 15:03 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 07/27] printk: nbcon: Use driver synchronization while registering John Ogness
2024-04-09 9:46 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 08/27] serial: core: Provide low-level functions to lock port John Ogness
2024-04-09 12:00 ` Petr Mladek
2024-04-09 13:23 ` Greg Kroah-Hartman [this message]
2024-04-02 22:11 ` [PATCH printk v4 09/27] printk: nbcon: Implement processing in port->lock wrapper John Ogness
2024-04-03 11:35 ` John Ogness
2024-04-10 12:35 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 10/27] printk: nbcon: Do not rely on proxy headers John Ogness
2024-04-03 10:33 ` Andy Shevchenko
2024-04-10 13:06 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 11/27] printk: nbcon: Fix kerneldoc for enums John Ogness
2024-04-02 22:11 ` [PATCH printk v4 12/27] printk: Make console_is_usable() available to nbcon John Ogness
2024-04-02 22:11 ` [PATCH printk v4 13/27] printk: Let console_is_usable() handle nbcon John Ogness
2024-04-02 22:11 ` [PATCH printk v4 14/27] printk: Add @flags argument for console_is_usable() John Ogness
2024-04-02 22:11 ` [PATCH printk v4 15/27] printk: nbcon: Provide function to flush using write_atomic() John Ogness
2024-04-10 14:56 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 16/27] printk: Track registered boot consoles John Ogness
2024-04-02 22:11 ` [PATCH printk v4 17/27] printk: nbcon: Use nbcon consoles in console_flush_all() John Ogness
2024-04-11 14:14 ` Petr Mladek
2024-04-11 15:32 ` Petr Mladek
2024-04-17 23:05 ` John Ogness
2024-04-18 12:47 ` Petr Mladek
2024-04-18 21:45 ` John Ogness
2024-04-19 9:55 ` Petr Mladek
2024-04-12 9:07 ` Petr Mladek
2024-04-17 21:59 ` John Ogness
2024-04-02 22:11 ` [PATCH printk v4 18/27] printk: nbcon: Assign priority based on CPU state John Ogness
2024-04-02 22:11 ` [PATCH printk v4 19/27] printk: nbcon: Add unsafe flushing on panic John Ogness
2024-04-11 14:18 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 20/27] printk: Avoid console_lock dance if no legacy or boot consoles John Ogness
2024-04-03 10:01 ` John Ogness
2024-04-12 14:21 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 21/27] printk: Track nbcon consoles John Ogness
2024-04-12 14:22 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 22/27] printk: Coordinate direct printing in panic John Ogness
2024-04-12 14:39 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 23/27] printk: nbcon: Implement emergency sections John Ogness
2024-04-12 15:27 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 24/27] panic: Mark emergency section in warn John Ogness
2024-04-15 13:16 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 25/27] panic: Mark emergency section in oops John Ogness
2024-04-15 13:22 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 26/27] rcu: Mark emergency section in rcu stalls John Ogness
2024-04-15 13:32 ` Petr Mladek
2024-04-02 22:11 ` [PATCH printk v4 27/27] lockdep: Mark emergency sections in lockdep splats John Ogness
2024-04-16 9:51 ` Petr Mladek
2024-04-16 11:17 ` Peter Zijlstra
2024-04-16 12:53 ` John Ogness
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