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,
Andrew Morton <akpm@linux-foundation.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Uros Bizjak <ubizjak@gmail.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH printk v4 25/27] panic: Mark emergency section in oops
Date: Mon, 15 Apr 2024 15:22:37 +0200 [thread overview]
Message-ID: <Zh0qHXS7NPcAR6Qi@localhost.localdomain> (raw)
In-Reply-To: <20240402221129.2613843-26-john.ogness@linutronix.de>
On Wed 2024-04-03 00:17:27, John Ogness wrote:
> Mark an emergency section beginning with oops_enter() until the
> end of oops_exit(). In this section, the CPU will not perform
> console output for the printk() calls. Instead, a flushing of the
> console output is triggered when exiting the emergency section.
>
> The very end of oops_exit() performs a kmsg_dump(). This is not
> included in the emergency section because it is another
> flushing mechanism that should occur after the consoles have
> been triggered to flush.
>
> Signed-off-by: John Ogness <john.ogness@linutronix.de>
Let's try it:
Reviewed-by: Petr Mladek <pmladek@suse.com>
Best Regards,
Petr
next prev parent reply other threads:[~2024-04-15 13:22 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
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 [this message]
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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