[PATCH 1/7] vsprintf: Add %pTN to print task name

[Kalle Valo]

Petr Mladek <pmladek at suse.com> writes:

> On Fri 2024-12-13 13:46:04, Yafang Shao wrote:
>> Since the task->comm is guaranteed to be NUL-ternimated, we can print it
>> directly. Add a new vsnprintf format specifier "%pTN" to print task comm,
>> where 'p' represents the task Pointer, 'T' stands for Task, and 'N' denots
>> Name. With this abstraction, the user no longer needs to care about
>> retrieving task name.
>
> What is the advantage, please?
>
> Honestly, I believe that the meaning of
>
> 	printk("%s\n", task->comm);
>
> is much more clear than using a cryptic %pXYZ modifier:
>
> 	printk("%pTN\n", task);
>
>
> The %pXYZ modifiers makes sense only when the formatting of the printed
> information needs some processing. But this is a plain string.
> IMHO, it is not worth it. In fact, I believe that it is a
> counter productive.

I agree, it makes the code harder to read for someone who is not
familiar with all the %p magic we have (like me).

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