Re: [RFC][PATCH] printk: Add %pb to print bitmaps
From: Ingo Molnar
Date: Wed May 09 2012 - 13:31:14 EST
* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Wed, 2012-05-09 at 19:24 +0200, Ingo Molnar wrote:
>
> > I don't think that's a significant limitation, because it's
> > fixed width anyway. So if this works then this would be a
> > pretty good and simple to use solution.
>
> Not quite following, there's nothing fixed width about
> bitmap_scnlistprintf() output.
There's a maximum field length possible, and we should/could use
that as padding.
Say for 8 bits, the worst-case is something like:
1-2,4-5,7-8
right? The max is roughly len*3/2.
I see a problem there: for something larger like 256 it would
lead to quite some padding ...
Well, we could just skip doing width for now - the ability to
easily print bitmaps is very valuable in itself.
Thanks,
Ingo
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