In the beginning, mm/gup_benchmark.c supported get_user_pages_fast() only, but right now, it supports the benchmarking of a couple of get_user_pages() related calls like: * get_user_pages_fast() * get_user_pages() * pin_user_pages_fast() * pin_user_pages() The documentation is confusing and needs update.
Cc: John Hubbard jhubbard@nvidia.com Cc: Keith Busch keith.busch@intel.com Cc: Ira Weiny ira.weiny@intel.com Cc: Kirill A. Shutemov kirill.shutemov@linux.intel.com Signed-off-by: Barry Song song.bao.hua@hisilicon.com --- mm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig index 6c974888f86f..f7c9374da7b3 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -831,10 +831,10 @@ config PERCPU_STATS be used to help understand percpu memory usage.
config GUP_BENCHMARK - bool "Enable infrastructure for get_user_pages_fast() benchmarking" + bool "Enable infrastructure for get_user_pages() and related calls benchmarking" help Provides /sys/kernel/debug/gup_benchmark that helps with testing - performance of get_user_pages_fast(). + performance of get_user_pages() and related calls.
See tools/testing/selftests/vm/gup_benchmark.c