Re: [PATCH 4/4] coding-style: add explanation about pr_fmt macro

From: Joe Perches
Date: Fri Sep 13 2019 - 15:08:47 EST

On Fri, 2019-09-13 at 15:57 -0300, André Almeida wrote:
> The pr_fmt macro is useful to format log messages printed by pr_XXXX()
> functions. Add text to explain the purpose of it, how to use and an
> example.
> diff --git a/Documentation/process/coding-style.rst b/Documentation/process/coding-style.rst
> @@ -819,7 +819,15 @@ which you should use to make sure messages are matched to the right device
> and driver, and are tagged with the right level: dev_err(), dev_warn(),
> dev_info(), and so forth. For messages that aren't associated with a
> particular device, <linux/printk.h> defines pr_notice(), pr_info(),
> -pr_warn(), pr_err(), etc.
> +pr_warn(), pr_err(), etc. It's possible to format pr_XXX() messages using the
> +macro pr_fmt() to prevent rewriting the style of messages. It should be
> +defined before including ``include/printk.h``, to avoid compiler warning about

Please make this '#include <linux/kernel.h>'

printk.h should normally not be #included.