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
