linux-kernel - Re: [RFC][PATCH] printk: Add %pb to print bitmaps

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Date:	Wed, 09 May 2012 19:22:40 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Igor Mammedov <imammedo@...hat.com>, Jiang Liu <liuj97@...il.com>,
	linux-kernel@...r.kernel.org, mingo@...nel.org, pjt@...gle.com,
	tglx@...utronix.de, seto.hidetoshi@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH] printk: Add %pb to print bitmaps

On Wed, 2012-05-09 at 10:15 -0700, Linus Torvalds wrote:
> 
> The "bc" and "bn" would work, except for the fact that I doubt they
> are printed out enough to matter.

There's a number %pbc candidates in the scheduler that would be nice to
not have to do manually.

> A "%.*pb" is the only interface that can work for a "sized" bitmap
> (with obviously fixed-length ones being possible with a "%.32bp" like
> thing)

Right, sadly that also generates a warning :/

> But the whole va_args games you play are not acceptable. %p *will*
> continue to take a void *, and nothing else. 

The va_args() games are dead.
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