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    Subject[PATCH v2 0/2] KSM: Replace jhash2 with xxhash
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    ksm use jhash2 for hashing pages,
    in 4.14 xxhash has been merged to mainline kernel.

    xxhash much faster then jhash2 on big inputs (32 byte+)

    xxhash has 2 versions, one with 32-bit hash and
    one with 64-bit hash.

    64-bit version works faster then 32-bit on 64-bit arch.

    So lets get better from two worlds,
    create arch dependent xxhash() function that will use
    fastest algo for current arch.
    This a first patch.

    Performance info and ksm update can be found in second patch.

    Changelog:
    v1 -> v2:
    - Move xxhash() to xxhash.h/c and separate patches

    Timofey Titovets (2):
    xxHash: create arch dependent 32/64-bit xxhash()
    KSM: Replace jhash2 with xxhash

    include/linux/xxhash.h | 24 ++++++++++++++++++++++++
    lib/xxhash.c | 10 ++++++++++
    mm/Kconfig | 1 +
    mm/ksm.c | 14 +++++++-------
    4 files changed, 42 insertions(+), 7 deletions(-)

    --
    2.14.1

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