This moves duplicate BUG, PAGE_BUG, BUG_ON, and WARN_ON code to asm-generic
and makes them slightly more consistent.  This cleanup is also preparatory
work for making BUG and WARN verbosity configurable.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>