[GIT PULL] prefetch support for 3.13

[Will Deacon]

Hi Russell,

Please pull the following patches for 3.13. They add support for the pldw
instruction (prefetch with intent to modify) in ARMv7 SMP cores, which is
then used to gain a measurable performance boost for particular atomic
sequences.

Cheers,

Will

--->8

The following changes since commit 15c03dd4859ab16f9212238f29dd315654aa94f6:

  Linux 3.12-rc3 (2013-09-29 15:02:38 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git for-rmk/prefetch

for you to fetch changes up to d779c07dd72098a7416d907494f958213b7726f3:

  ARM: bitops: prefetch the destination word for write prior to strex (2013-09-30 16:42:56 +0100)

----------------------------------------------------------------
Will Deacon (6):
      ARM: prefetch: remove redundant "cc" clobber
      ARM: smp_on_up: move inline asm ALT_SMP patching macro out of spinlock.h
      ARM: prefetch: add support for prefetchw using pldw on SMP ARMv7+ CPUs
      ARM: locks: prefetch the destination word for write prior to strex
      ARM: atomics: prefetch the destination word for write prior to strex
      ARM: bitops: prefetch the destination word for write prior to strex

 arch/arm/include/asm/atomic.h         |  7 +++++++
 arch/arm/include/asm/processor.h      | 33 +++++++++++++++++++++++++--------
 arch/arm/include/asm/spinlock.h       | 28 ++++++++++++++--------------
 arch/arm/include/asm/spinlock_types.h |  2 +-
 arch/arm/include/asm/unified.h        |  4 ++++
 arch/arm/lib/bitops.h                 |  5 +++++
 6 files changed, 56 insertions(+), 23 deletions(-)