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
Subject: Re: [PATCH printk v3 2/6] printk: track/limit recursion
Date: Thu, 24 Jun 2021 14:55:45 +0200 [thread overview]
Message-ID: <YNSA0cuioVGMPe0d@alley> (raw)
In-Reply-To: <20210624111148.5190-3-john.ogness@linutronix.de>
On Thu 2021-06-24 13:17:44, John Ogness wrote:
> Currently the printk safe buffers provide a form of recursion
> protection by redirecting to the safe buffers whenever printk() is
> recursively called.
>
> In preparation for removal of the safe buffers, provide an alternate
> explicit recursion protection. Recursion is limited to 3 levels
> per-CPU and per-context.
>
> Signed-off-by: John Ogness <john.ogness@linutronix.de>
It looks pretty straightforward.
Reviewed-by: Petr Mladek <pmladek@suse.com>
Best Regards,
Petr
next prev parent reply other threads:[~2021-06-24 12:55 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 11:11 [PATCH printk v3 0/6] printk: remove safe buffers John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 11:11 ` [PATCH printk v3 1/6] lib/nmi_backtrace: explicitly serialize banner and regs John Ogness
2021-06-24 12:26 ` Petr Mladek
2021-06-24 11:11 ` [PATCH printk v3 2/6] printk: track/limit recursion John Ogness
2021-06-24 12:55 ` Petr Mladek [this message]
2021-06-24 11:11 ` [PATCH printk v3 3/6] printk: remove safe buffers John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 14:49 ` Petr Mladek
2021-06-24 14:49 ` Petr Mladek
2021-06-24 14:49 ` Petr Mladek
2021-06-24 15:35 ` John Ogness
2021-06-24 15:35 ` John Ogness
2021-06-24 15:35 ` John Ogness
2021-06-25 12:41 ` Petr Mladek
2021-06-25 12:41 ` Petr Mladek
2021-06-25 12:41 ` Petr Mladek
2021-06-24 11:11 ` [PATCH printk v3 4/6] printk: remove NMI tracking John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-24 11:11 ` John Ogness
2021-06-25 12:36 ` Petr Mladek
2021-06-25 12:36 ` Petr Mladek
2021-06-25 12:36 ` Petr Mladek
2021-06-25 13:34 ` Russell King (Oracle)
2021-06-25 13:34 ` Russell King (Oracle)
2021-06-25 13:34 ` Russell King (Oracle)
2021-06-24 11:11 ` [PATCH printk v3 5/6] printk: convert @syslog_lock to mutex John Ogness
2021-06-24 11:11 ` [PATCH printk v3 6/6] printk: syslog: close window between wait and read John Ogness
2021-06-24 14:57 ` Petr Mladek
2021-06-24 15:25 ` Petr Mladek
2021-06-25 8:11 ` John Ogness
2021-06-25 14:55 ` Petr Mladek
2021-06-25 13:33 ` Steven Rostedt
2021-06-25 14:14 ` John Ogness
2021-06-28 14:35 ` Petr Mladek
2021-06-28 14:52 ` Steven Rostedt
2021-06-28 15:00 ` John Ogness
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