[GIT PULL] prefetch support for 3.13
Dirk Behme
dirk.behme at gmail.com
Sun Nov 24 04:54:07 EST 2013
Am 09.10.2013 19:13, schrieb 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(-)
Would this patch series be a candidate for the -stable kernels as
discussed recently in the "Patches from ARM folks solicited for the
-stable tree" thread?
Best regards
Dirk
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