RFC x86/jump labels: Add the 5 byte or 2 byte jumps

As I said, I would post the patches that let the jmps used by jump labels be turn to 2 bytes where possible. These are a bit controversial due to the complexity of the update_jump_label code.

These patches are based off of tip's x86/jumplabel code.

But if someone cares to play with it, feel free. I'll push this up to my repo under: tip/perf/jump-label-7 (internally this is my 7th version).

I'll post a patch that does the counting as well as a reply to this post.

Enjoy,

-- Steve

git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
tip/perf/jump-label-7

Head SHA1: 2a7235814df0cccda60a366fb8b1e5502055ea4d

Steven Rostedt (2):
jump labels: Add infrastructure to update jump labels at compile time x86/jump labels: Use etiher 5 byte or 2 byte jumps

----

 Makefile                          |    7 +
 arch/Kconfig                      |    6 +
 arch/x86/Kconfig                  |    1 +
 arch/x86/include/asm/jump_label.h |    7 +-
 arch/x86/kernel/jump_label.c      |   88 +++++++---
 scripts/Makefile                  |    1 +
 scripts/Makefile.build            |   15 +-
 scripts/update_jump_label.c       |  341 +++++++++++++++++++++++++++++++++++++
 scripts/update_jump_label.h       |  208 ++++++++++++++++++++++
 9 files changed, 649 insertions(+), 25 deletions(-)