Re: [RFC] gcc feature request: Moving blocks into sections

Steven Rostedt
2013-08-05T18:39:41Z

On Mon, 2013-08-05 at 11:20 -0700, Linus Torvalds wrote:

> Of course, it would be good to optimize static_key_false() itself -
> right now those static key jumps are always five bytes, and while they
> get nopped out, it would still be nice if there was some way to have
> just a two-byte nop (turning into a short branch) *if* we can reach
> another jump that way..For small functions that would be lovely. Oh
> well.

I had patches that did exactly this:

https://lkml.org/lkml/2012/3/8/461

But it got dropped for some reason. I don't remember why. Maybe because
of the complexity?

-- Steve