linux-kernel - Re: [RFC][PATCH] printk: increase devkmsg write() ratelimit

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Date:   Tue, 18 Dec 2018 23:02:07 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [RFC][PATCH] printk: increase devkmsg write() ratelimit

On (12/18/18 18:18), Sergey Senozhatsky wrote:
> 
> I know that there is a "kernel.printk_devkmsg" interface; do we
> expect every systemd-enabled distro to find that out and to tweak
> kernel.printk_devkmsg

My bad, this should be corrected. I thought that user space can
adjust ratelimit, via file->private_data->rs. This does not
appear to be the case.

So the question is - is it time to change the default devkmsg
ratelimit?

	-ss