linux-kernel - Re: [PATCH] lib/vsprintf: add %pT[C012] format specifier

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Date:	Sun, 05 Jan 2014 10:09:52 -0800
From:	Joe Perches <joe@...ches.com>
To:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc:	keescook@...omium.org, pavel@....cz, akpm@...ux-foundation.org,
	geert@...ux-m68k.org, jkosina@...e.cz, viro@...iv.linux.org.uk,
	davem@...emloft.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] lib/vsprintf: add %pT[C012] format specifier

On Sun, 2014-01-05 at 12:15 +0900, Tetsuo Handa wrote:
> Tetsuo Handa wrote:
> > Since my purpose is to make reading of task_struct->comm consistent, %pT-like
> > extension is what I want for centralizing pointer dereferences.
> 
> If we have no objections for %pT[C012] patch,

I still believe emitting different output styles using
%pT[012] is not ideal.

Is this really necessary?

I'd prefer that each element be described separately
using %pT<type> where T is a struct task_struct and
type is a member.

type 'c' -> tsk.comm
type 'p' -> tsk.pid
type 't' -> task.tgid

though if the real concern is simply comm consistency,
maybe these other member types aren't at all useful.


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