linux-kernel - Re: [PATCH printk v3 2/6] printk: track/limit recursion

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Message-ID: <YNSA0cuioVGMPe0d@alley>
Date:   Thu, 24 Jun 2021 14:55:45 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH printk v3 2/6] printk: track/limit recursion

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@...utronix.de>

It looks pretty straightforward.

Reviewed-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr