linux-kernel - Re: [PATCH printk v2 1/5] printk: track/limit recursion

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Message-ID: <YGZ7YyLXMh1HFTs2@google.com>
Date:   Fri, 2 Apr 2021 11:03:15 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Petr Mladek <pmladek@...e.com>
Cc:     John Ogness <john.ogness@...utronix.de>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH printk v2 1/5] printk: track/limit recursion

On (21/04/01 12:00), Petr Mladek wrote:
> On Tue 2021-03-30 17:35:08, 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>
> 
> Reviewed-by: Petr Mladek <pmladek@...e.com>

Reviewed-by: Sergey Senozhatsky <senozhatsky@...omium.org>