linux-kernel - Re: [RFC PATCH v4 8/9] printk-rb: new functionality to support printk

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Message-ID: <8736hvf4s8.fsf@linutronix.de>
Date:   Wed, 21 Aug 2019 07:47:51 +0200
From:   John Ogness <john.ogness@...utronix.de>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Petr Mladek <pmladek@...e.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>,
        Brendan Higgins <brendanhiggins@...gle.com>
Subject: Re: [RFC PATCH v4 8/9] printk-rb: new functionality to support printk

On 2019-08-20, Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> wrote:
> [..]
>> +void prb_init(struct printk_ringbuffer *rb, char *data, int data_size_bits,
>> +	      struct prb_desc *descs, int desc_count_bits,
>> +	      struct wait_queue_head *waitq)
>> +{
>> +	struct dataring *dr = &rb->dr;
>> +	struct numlist *nl = &rb->nl;
>> +
>> +	rb->desc_count_bits = desc_count_bits;
>> +	rb->descs = descs;
>> +	atomic_long_set(&descs[0].id, 0);
>> +	descs[0].desc.begin_lpos = 1;
>> +	descs[0].desc.next_lpos = 1;
>
> dataring_desc_init(), perhaps?

Agreed.