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

Andrew Morton
2012-05-09T19:07:49Z

On Wed, 09 May 2012 15:27:23 +0200
Peter Zijlstra <peterz@infradead.org> wrote:

> + * - 'b' For a bitmap, consumes 2 args, second is int

There's a pretty widespread convention that %b is used to print in
binary: printf("%b", 10) -> 1010. Regrettably it isn't part of
standard C, but it's often supported anyway. Perl's printf does this
as well. Perl uses %B also.

If we later want to add binary printing to kernel print(), we'd presumably
use %pb, to match this precedent.

So perhaps it would be better to avoid consuming `b' for bitmaps?