Commit d0de8241 authored by Barry Song's avatar Barry Song Committed by Linus Torvalds
Browse files

mm/gup_test: GUP_TEST depends on DEBUG_FS 

Without DEBUG_FS, all the code in gup_benchmark becomes meaningless.
For sure kernel provides debugfs stub while DEBUG_FS is disabled, but
the point here is that GUP_TEST can do nothing without DEBUG_FS.

[song.bao.hua@hisilicon.com: add comment as a prompt to users as commented by John and Randy]
  Link: https://lkml.kernel.org/r/20201108083732.15336-1-song.bao.hua@hisilicon.com

Link: https://lkml.kernel.org/r/20201104100552.20156-1-song.bao.hua@hisilicon.com


Signed-off-by: default avatarBarry Song <song.bao.hua@hisilicon.com>
Suggested-by: default avatarJohn Garry <john.garry@huawei.com>
Reviewed-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Acked-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent afaa7888

mm/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -823,6 +823,7 @@ config PERCPU_STATS 


config GUP_TEST

	bool "Enable infrastructure for get_user_pages()-related unit tests"

	depends on DEBUG_FS

	help

	  Provides /sys/kernel/debug/gup_test, which in turn provides a way

	  to make ioctl calls that can launch kernel-based unit tests for
@@ -840,6 +841,9 @@ config GUP_TEST 


	  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