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 -- 2.14.1
