diff options
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 8c49d09da214..cf04bc3c866c 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -821,13 +821,28 @@ config PERCPU_STATS information includes global and per chunk statistics, which can be used to help understand percpu memory usage. -config GUP_BENCHMARK - bool "Enable infrastructure for get_user_pages() and related calls benchmarking" +config GUP_TEST + bool "Enable infrastructure for get_user_pages()-related unit tests" + depends on DEBUG_FS help - Provides /sys/kernel/debug/gup_benchmark that helps with testing - performance of get_user_pages() and related calls. + Provides /sys/kernel/debug/gup_test, which in turn provides a way + to make ioctl calls that can launch kernel-based unit tests for + the get_user_pages*() and pin_user_pages*() family of API calls. - See tools/testing/selftests/vm/gup_benchmark.c + These tests include benchmark testing of the _fast variants of + get_user_pages*() and pin_user_pages*(), as well as smoke tests of + the non-_fast variants. + + There is also a sub-test that allows running dump_page() on any + of up to eight pages (selected by command line args) within the + range of user-space addresses. These pages are either pinned via + pin_user_pages*(), or pinned via get_user_pages*(), as specified + by other command line arguments. + + See tools/testing/selftests/vm/gup_test.c + +comment "GUP_TEST needs to have DEBUG_FS enabled" + depends on !GUP_TEST && !DEBUG_FS config GUP_GET_PTE_LOW_HIGH bool |