[PATCH 0/3] Optimise cache-flushing system call and add iovec variant

Will Deacon
2013-03-25T18:18:03Z

Hello,

This patch series has been sitting on my box for some time, pending
benchmark results and analysis.

The results are that, with the first two patches in this series, we see
~2% improvement in browser benchmark scores, which flush the cache fairly
regularly in response to jitting JS code.

The final patch is more of an RFC, since I don't have any software that
uses it outside of my toy programs.

All feedback welcome,

Will

Will Deacon (3):
ARM: cacheflush: don't round address range up to nearest page
ARM: cacheflush: don't bother rounding to nearest vma
ARM: cacheflush: add new iovec-based cache flushing system call

arch/arm/include/asm/cacheflush.h | 3 +--
arch/arm/include/uapi/asm/unistd.h | 1 +
arch/arm/kernel/traps.c | 49 +++++++++++++++++++++++++++-----------
3 files changed, 37 insertions(+), 16 deletions(-)

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1.8.0