Re: [patch] block/IDE/interrupt lockup

[Keith Owens]

On Sat, 30 Mar 2002 11:06:25 -0800, 
Andrew Morton <[e-mail]> wrote:
>What I'd like is a debugging function `can_sleep()'.  This
>is good for documentary purposes, and will catch bugs.
>
>So kmalloc() would gain:
>
>	if (gfp_flags & __GFP_WAIT)
>		can_sleep();

can_sleep_if(gfp_flags & __GFP_WAIT) would be better.  can_sleep_if()
is 
  do { } while(0)
for no debugging, for debugging it is
  if (unlikely(condition)) {
  	whine(__stringify(condition))
  }

One line instead of two, no references to variables when debugging is
off, automatically adds unlikely.