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

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Message-ID: <87ef3qbkrb.fsf@linutronix.de>
Date:   Wed, 19 Jun 2019 00:18:16 +0200
From:   John Ogness <john.ogness@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>
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 2019-06-18, Peter Zijlstra <peterz@...radead.org> wrote:
>> +/**
>> + * struct prb_descr - A descriptor representing an entry in the ringbuffer.
>> + * @seq: The sequence number of the entry.
>> + * @id: The descriptor id.
>> + *      The location of the descriptor within the descriptor array can be 
>> + *      determined from this value.
>> + * @data: The logical position of the data for this entry.
>> + *        The location of the beginning of the data within the data array
>> + *        can be determined from this value.
>> + * @data_next: The logical position of the data next to this entry.
>> + *             This is used to determine the length of the data as well as
>> + *             identify where the next data begins.
>> + * @next: The id of the next (newer) descriptor in the linked list.
>> + *        A value of EOL means it is the last descriptor in the list.
>> + *
>
> For the entire patch; can you please vertically align those
> descriptions? This is unreadable. Also, add some whitespace, to aid with
> reading, something like do:
>
>  * struct prb_descr - A descriptor representing an entry in the ringbuffer.
>  *
>  * @seq:       The sequence number of the entry.
>  *
>  * @id:        The descriptor id.
>  *             The location of the descriptor within the descriptor
>  *             array can be determined from this value.
>  *
>  * @data:      The logical position of the data for this entry.  The
>  *             location of the beginning of the data within the data
>  *             array can be determined from this value.
>  *
>  * @data_next: The logical position of the data next to this entry.
>  *             This is used to determine the length of the data as well as
>  *             identify where the next data begins.
>  *
>  * @next:      The id of the next (newer) descriptor in the linked list.
>  *             A value of EOL means it is the last descriptor in the
>  *             list.

OK. Thanks for taking the time to format an example.

John Ogness