linux-kernel - Re: [PATCH] docs: core-api/printk-formats.rst: Clarify formatting {cpu,node}mask

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Date:   Wed, 11 Nov 2020 18:48:16 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Jonathan Corbet <corbet@....net>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] docs: core-api/printk-formats.rst: Clarify formatting
 {cpu,node}mask

On Wed, Nov 11, 2020 at 04:29:33PM +0100, Petr Mladek wrote:
> On Tue 2020-11-10 15:41:21, Geert Uytterhoeven wrote:
> > Clarify how to pass the field width for bitmaps, and mention the helper
> > macros that are available to ease printing cpumask and nodemask.

...

> 	%*pb	0779
> 	%*pbl	0,3-6,8-10
> 
> For printing bitmap and its derivatives such as cpumask and nodemask.
> 
> It takes two arguments, see '*'. The first argument defines the number
> of bits in the mask. The second argument points to the mask.
> 
> %*pb outputs the bitmap as a hex number. If the size is bigger than 32-bit
> then 32-bit values are separated by a comma.
> 
> %*pbl outputs the bitmap as a range list.
> 
> The number of bits is passed by value. The mask is passed by reference.

It can be improved at least by replacing mask with bitmap here.

> Helper macros cpumask_pr_args() and nodemask_pr_args() are available to
> ease printing cpumask and nodemask.

-- 
With Best Regards,
Andy Shevchenko