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-rw-r--r--mm/Kconfig6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index e25e5cb2989f..350f2e23a94a 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -832,6 +832,12 @@ config GUP_TEST
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
config GUP_GET_PTE_LOW_HIGH