[GIT PULL] Kselftest fixes update for Linux 5.2-rc4

[Shuah Khan]

Hi Linus,

Please pull the following Kselftest fixes update for Linux 5.2-rc4.

This Kselftest update for Linux 5.2-rc4 consists of

- Alex Shi's fixes to cgroup tests
- Alakesh Haloi's fix to userfaultfd compiler warning
- Naresh Kamboju's fix to vm install to include test script to run
  the test.

diff is attached.

thanks,
-- Shuah

----------------------------------------------------------------

The following changes since commit eff82a263b5cfa3427fd9dbfedd96da94fdc9f19:

  selftests: rtc: rtctest: specify timeouts (2019-05-24 13:39:58 -0600)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest 
tags/linux-kselftest-5.2-rc4

for you to fetch changes up to bc2cce3f2ebcae02aa4bb29e3436bf75ee674c32:

  selftests: vm: install test_vmalloc.sh for run_vmtests (2019-05-30 
08:32:57 -0600)

----------------------------------------------------------------
linux-kselftest-5.2-rc4

This Kselftest update for Linux 5.2-rc4 consists of

- Alex Shi's fixes to cgroup tests
- Alakesh Haloi's fix to userfaultfd compiler warning
- Naresh Kamboju's fix to vm install to include test script to run
  the test.

----------------------------------------------------------------
Alakesh Haloi (1):
      userfaultfd: selftest: fix compiler warning

Alex Shi (3):
      kselftest/cgroup: fix unexpected testing failure on test_memcontrol
      kselftest/cgroup: fix unexpected testing failure on test_core
      kselftest/cgroup: fix incorrect test_core skip

Naresh Kamboju (1):
      selftests: vm: install test_vmalloc.sh for run_vmtests

 tools/testing/selftests/cgroup/test_core.c       | 7 ++++++-
 tools/testing/selftests/cgroup/test_memcontrol.c | 4 ++++
 tools/testing/selftests/vm/Makefile              | 2 ++
 tools/testing/selftests/vm/userfaultfd.c         | 2 +-
 4 files changed, 13 insertions(+), 2 deletions(-)

----------------------------------------------------------------
diff --git a/tools/testing/selftests/cgroup/test_core.c b/tools/testing/selftests/cgroup/test_core.c
index be59f9c34ea2..79053a4f4783 100644
--- a/tools/testing/selftests/cgroup/test_core.c
+++ b/tools/testing/selftests/cgroup/test_core.c
@@ -198,7 +198,7 @@ static int test_cgcore_no_internal_process_constraint_on_threads(const char *roo
 	char *parent = NULL, *child = NULL;
 
 	if (cg_read_strstr(root, "cgroup.controllers", "cpu") ||
-	    cg_read_strstr(root, "cgroup.subtree_control", "cpu")) {
+	    cg_write(root, "cgroup.subtree_control", "+cpu")) {
 		ret = KSFT_SKIP;
 		goto cleanup;
 	}
@@ -376,6 +376,11 @@ int main(int argc, char *argv[])
 
 	if (cg_find_unified_root(root, sizeof(root)))
 		ksft_exit_skip("cgroup v2 isn't mounted\n");
+
+	if (cg_read_strstr(root, "cgroup.subtree_control", "memory"))
+		if (cg_write(root, "cgroup.subtree_control", "+memory"))
+			ksft_exit_skip("Failed to set memory controller\n");
+
 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
 		switch (tests[i].fn(root)) {
 		case KSFT_PASS:
diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c
index 6f339882a6ca..c19a97dd02d4 100644
--- a/tools/testing/selftests/cgroup/test_memcontrol.c
+++ b/tools/testing/selftests/cgroup/test_memcontrol.c
@@ -1205,6 +1205,10 @@ int main(int argc, char **argv)
 	if (cg_read_strstr(root, "cgroup.controllers", "memory"))
 		ksft_exit_skip("memory controller isn't available\n");
 
+	if (cg_read_strstr(root, "cgroup.subtree_control", "memory"))
+		if (cg_write(root, "cgroup.subtree_control", "+memory"))
+			ksft_exit_skip("Failed to set memory controller\n");
+
 	for (i = 0; i < ARRAY_SIZE(tests); i++) {
 		switch (tests[i].fn(root)) {
 		case KSFT_PASS:
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index e13eb6cc8901..05306c58ff9f 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -25,6 +25,8 @@ TEST_GEN_FILES += virtual_address_range
 
 TEST_PROGS := run_vmtests
 
+TEST_FILES := test_vmalloc.sh
+
 KSFT_KHDR_INSTALL := 1
 include ../lib.mk
 
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index 5d1db824f73a..b3e6497b080c 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -123,7 +123,7 @@ static void usage(void)
 	fprintf(stderr, "Supported <test type>: anon, hugetlb, "
 		"hugetlb_shared, shmem\n\n");
 	fprintf(stderr, "Examples:\n\n");
-	fprintf(stderr, examples);
+	fprintf(stderr, "%s", examples);
 	exit(1);
 }