[PATCH 0/2] x86: Fix performance regression in get_user_pages_fast()

[Kirill A. Shutemov]

Fix performance regression found by 0-day.

Kirill A. Shutemov (2):
  mm: Add infrastructure for get_user_pages_fast() benchmarking
  mm, x86: Fix performance regression in get_user_pages_fast()

 mm/Kconfig                                 |   9 +++
 mm/Makefile                                |   1 +
 mm/gup.c                                   |  97 +++++++++++++++++-----------
 mm/gup_benchmark.c                         | 100 +++++++++++++++++++++++++++++
 tools/testing/selftests/vm/Makefile        |   1 +
 tools/testing/selftests/vm/gup_benchmark.c |  91 ++++++++++++++++++++++++++
 6 files changed, 260 insertions(+), 39 deletions(-)
 create mode 100644 mm/gup_benchmark.c
 create mode 100644 tools/testing/selftests/vm/gup_benchmark.c

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2.14.1