This is a note to let you know that I've just added the patch titled selftests: vm: add fragment CONFIG_GUP_BENCHMARK to the 5.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-vm-add-fragment-config_gup_benchmark.patch and it can be found in the queue-5.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit c66e833a46323f768f4bce689b0bb7f7598c6e4d Author: Anatoly Pugachev <matorola@xxxxxxxxx> Date: Tue Jun 16 15:26:18 2020 +0300 selftests: vm: add fragment CONFIG_GUP_BENCHMARK [ Upstream commit cae1d5a2c5a491141faa747e9944ba40ab4ab786 ] 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@xxxxxxxxx> CC: Jiri Kosina <trivial@xxxxxxxxxx> CC: Shuah Khan <shuah@xxxxxxxxxx> Signed-off-by: Jiri Kosina <jkosina@xxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/testing/selftests/vm/config b/tools/testing/selftests/vm/config index 3ba674b64fa9f..69dd0d1aa30b2 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