[GIT] kbuild/lto changes for 3.15-rc1

[Michal Marek <mmarek@suse.cz>]

Hi Linus,

besides the kbuild branch, here is the LTO build support by Andi. It is
a separate branch, because it depends on other patches by Andi which
were merged through other trees. The link-time-optimization build is an
experimental feature, so there one kconfig option to enable it and
another kconfig option to disable it (behind a door with a sign "Beware
of the Leopard"...), so that it is not enabled by
allmodconfig/allyesconfig.

Thanks,
Michal

The following changes since commit 176ab02d4916f09d5d8cb63372d142df4378cdea:

  Merge branch 'x86-asmlinkage-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (2014-03-31 14:13:25 -0700)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild.git lto

for you to fetch changes up to 19a3cc83353e3bb4bc28769f8606139a3d350d2d:

  Kbuild, lto: Add Link Time Optimization support v3 (2014-04-07 21:51:13 +0200)

----------------------------------------------------------------
Andi Kleen (2):
      Kbuild, lto: Set TMPDIR for LTO v4
      Kbuild, lto: Add Link Time Optimization support v3

 Documentation/lto-build  | 173 +++++++++++++++++++++++++++++++++++++++++++++++
 Makefile                 |  20 +++++-
 arch/x86/Kconfig         |   2 +-
 init/Kconfig             |  73 ++++++++++++++++++++
 kernel/gcov/Kconfig      |   2 +-
 lib/Kconfig.debug        |   2 +-
 scripts/Makefile.lto     |  84 +++++++++++++++++++++++
 scripts/Makefile.modpost |   7 +-
 scripts/link-vmlinux.sh  |   2 +-
 9 files changed, 357 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/lto-build
 create mode 100644 scripts/Makefile.lto