Actually, I'd like to make %p produce the format that you right now have
to jump through insane hoops for: symbolic addresses.
Right now you have to do something insane like
print_symbol(KERN_WARNING "address: %s\n", ptr);
to print a symbolic version, and it sucks because it's actually just able
to print symbols, you cannot mix any other types in there.
I think it would be much easier to use if "%p" just did the symbolic
version (if it's relevant) automatically. If you _just_ want the hex
representation, you can already always just use %#lx and a cast.
(Of course, then for things that we can't make into symbolic names, we'd
have to fall back to just the hex representation, and whether that one
then includes the 0x or not I don't have strong opinions on.)
And yes, to avoid messing with current users, maybe we should only do that
with %#p (which I don't think anybody uses right now, although I suspect
it actually adds the '0x' you'd like). The '#' thing is, of course, all
about 'alternate forms'. But I worry that gcc warns about undefined
formatting behavior.
Linus
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