When running gup_benchmark test the following output states that the config options is missing.
$ sudo ./gup_benchmark open: No such file or directory
$ sudo strace -e trace=file ./gup_benchmark 2>&1 | tail -3 openat(AT_FDCWD, "/sys/kernel/debug/gup_benchmark", O_RDWR) = -1 ENOENT (No such file or directory) open: No such file or directory +++ exited with 1 +++
Fix it by adding config option fragment.
Fixes: 64c349f4ae78 ("mm: add infrastructure for get_user_pages_fast() benchmarking") Signed-off-by: Anatoly Pugachev matorola@gmail.com CC: Jiri Kosina trivial@kernel.org CC: Shuah Khan shuah@kernel.org --- tools/testing/selftests/vm/config | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/vm/config b/tools/testing/selftests/vm/config index 3ba674b64fa9..69dd0d1aa30b 100644 --- a/tools/testing/selftests/vm/config +++ b/tools/testing/selftests/vm/config @@ -3,3 +3,4 @@ CONFIG_USERFAULTFD=y CONFIG_TEST_VMALLOC=m CONFIG_DEVICE_PRIVATE=y CONFIG_TEST_HMM=m +CONFIG_GUP_BENCHMARK=y