linux-kernel - Re: [RFC PATCH v2 1/2] printk-rb: add a new printk ringbuffer implementation

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Message-ID: <20190701141144.GZ3402@hirez.programming.kicks-ass.net>
Date:   Mon, 1 Jul 2019 16:11:44 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andrea Parri <andrea.parri@...rulasolutions.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: Re: [RFC PATCH v2 1/2] printk-rb: add a new printk ringbuffer
 implementation

On Mon, Jul 01, 2019 at 12:39:35PM +0200, John Ogness wrote:
> On 2019-06-28, Peter Zijlstra <peterz@...radead.org> wrote:
> > (Note that the qspinlock has a queue not unlike this, but that again
> > doesn't have to bother with NMIs)
> 
> Thank you for pointing this out! I will look to qspinlock for some
> naming guidelines.

Fair warning: qspinlock might hurt your brain; but if you do look and
are unsure; let me know and I'll try and improve its comments.