linux-kernel - Re: [PATCHv2 2/3] x86, ptdump: Simplify page flag evaluation code

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Date:	Sun, 21 Sep 2014 12:49:33 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Mathias Krause <minipli@...glemail.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCHv2 2/3] x86, ptdump: Simplify page flag evaluation code

On 9/21/2014 8:26 AM, Mathias Krause wrote:
> -		if (pr & _PAGE_PCD)
> -			pt_dump_cont_printf(m, dmsg, "PCD ");
> -		else
> -			pt_dump_cont_printf(m, dmsg, "    ");
> +		pt_dump_cont(m, dmsg, "%-4s", pr & _PAGE_USER ? "USR" : "");

while you have some nice cleanups in your patch, I can't say I consider this an improvement.
Yes the C standard allows ? to be used like this
but no, I don't think it improves readability in general.
(I think for me the main exception is NULL pointer cases, but this is not one of these)


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