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-rw-r--r--tools/testing/selftests/cgroup/cgroup_util.c12
-rw-r--r--tools/testing/selftests/cgroup/cgroup_util.h1
-rw-r--r--tools/testing/selftests/cgroup/test_memcontrol.c16
3 files changed, 26 insertions, 3 deletions
diff --git a/tools/testing/selftests/cgroup/cgroup_util.c b/tools/testing/selftests/cgroup/cgroup_util.c
index e6f3679cdcc0..b4d7027a44c3 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.c
+++ b/tools/testing/selftests/cgroup/cgroup_util.c
@@ -528,6 +528,18 @@ int set_oom_adj_score(int pid, int score)
return 0;
}
+int proc_mount_contains(const char *option)
+{
+ char buf[4 * PAGE_SIZE];
+ ssize_t read;
+
+ read = read_text("/proc/mounts", buf, sizeof(buf));
+ if (read < 0)
+ return read;
+
+ return strstr(buf, option) != NULL;
+}
+
ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size)
{
char path[PATH_MAX];
diff --git a/tools/testing/selftests/cgroup/cgroup_util.h b/tools/testing/selftests/cgroup/cgroup_util.h
index 628738532ac9..756f76052b44 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.h
+++ b/tools/testing/selftests/cgroup/cgroup_util.h
@@ -48,6 +48,7 @@ extern int is_swap_enabled(void);
extern int set_oom_adj_score(int pid, int score);
extern int cg_wait_for_proc_count(const char *cgroup, int count);
extern int cg_killall(const char *cgroup);
+int proc_mount_contains(const char *option);
extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size);
extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle);
extern pid_t clone_into_cgroup(int cgroup_fd);
diff --git a/tools/testing/selftests/cgroup/test_memcontrol.c b/tools/testing/selftests/cgroup/test_memcontrol.c
index d240a391f99e..4da138d05acb 100644
--- a/tools/testing/selftests/cgroup/test_memcontrol.c
+++ b/tools/testing/selftests/cgroup/test_memcontrol.c
@@ -21,6 +21,8 @@
#include "../kselftest.h"
#include "cgroup_util.h"
+static bool has_recursiveprot;
+
/*
* This test creates two nested cgroups with and without enabling
* the memory controller.
@@ -525,15 +527,18 @@ static int test_memcg_low(const char *root)
}
for (i = 0; i < ARRAY_SIZE(children); i++) {
+ int no_low_events_index = has_recursiveprot ? 2 : 1;
+
oom = cg_read_key_long(children[i], "memory.events", "oom ");
low = cg_read_key_long(children[i], "memory.events", "low ");
if (oom)
goto cleanup;
- if (i < 2 && low <= 0)
+ if (i <= no_low_events_index && low <= 0)
goto cleanup;
- if (i >= 2 && low)
+ if (i > no_low_events_index && low)
goto cleanup;
+
}
ret = KSFT_PASS;
@@ -1382,7 +1387,7 @@ struct memcg_test {
int main(int argc, char **argv)
{
char root[PATH_MAX];
- int i, ret = EXIT_SUCCESS;
+ int i, proc_status, ret = EXIT_SUCCESS;
if (cg_find_unified_root(root, sizeof(root)))
ksft_exit_skip("cgroup v2 isn't mounted\n");
@@ -1398,6 +1403,11 @@ int main(int argc, char **argv)
if (cg_write(root, "cgroup.subtree_control", "+memory"))
ksft_exit_skip("Failed to set memory controller\n");
+ proc_status = proc_mount_contains("memory_recursiveprot");
+ if (proc_status < 0)
+ ksft_exit_skip("Failed to query cgroup mount option\n");
+ has_recursiveprot = proc_status;
+
for (i = 0; i < ARRAY_SIZE(tests); i++) {
switch (tests[i].fn(root)) {
case KSFT_PASS: