Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: "David S. Miller" <[email protected]>
Cc: Eric Dumazet <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Paolo Abeni <[email protected]>
Cc: Willem de Bruijn <[email protected]>
Cc: Leon Romanovsky <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Christian Brauner <[email protected]>
Cc: Kuniyuki Iwashima <[email protected]>
Cc: Lennart Poettering <[email protected]>
Cc: Luca Boccassi <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: "Michal Koutný" <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Alexander Mikhalitsyn <[email protected]>
---
tools/testing/selftests/cgroup/cgroup_util.c | 15 +++++++++++++++
tools/testing/selftests/cgroup/cgroup_util.h | 2 ++
2 files changed, 17 insertions(+)
diff --git a/tools/testing/selftests/cgroup/cgroup_util.c
b/tools/testing/selftests/cgroup/cgroup_util.c
index 1e2d46636a0c..b60e0e1433f4 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.c
+++ b/tools/testing/selftests/cgroup/cgroup_util.c
@@ -205,6 +205,21 @@ int cg_open(const char *cgroup, const char *control, int
flags)
return open(path, flags);
}
+/*
+ * Returns cgroup id on success, or -1 on failure.
+ */
+uint64_t cg_get_id(const char *cgroup)
+{
+ struct stat st;
+ int ret;
+
+ ret = stat(cgroup, &st);
+ if (ret)
+ return -1;
+
+ return st.st_ino;
+}
+
int cg_write_numeric(const char *cgroup, const char *control, long value)
{
char buf[64];
diff --git a/tools/testing/selftests/cgroup/cgroup_util.h
b/tools/testing/selftests/cgroup/cgroup_util.h
index 19b131ee7707..3f2d9676ceda 100644
--- a/tools/testing/selftests/cgroup/cgroup_util.h
+++ b/tools/testing/selftests/cgroup/cgroup_util.h
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0 */
#include <stdbool.h>
+#include <stdint.h>
#include <stdlib.h>
#include "../kselftest.h"
@@ -39,6 +40,7 @@ long cg_read_key_long(const char *cgroup, const char
*control, const char *key);
extern long cg_read_lc(const char *cgroup, const char *control);
extern int cg_write(const char *cgroup, const char *control, char *buf);
extern int cg_open(const char *cgroup, const char *control, int flags);
+extern uint64_t cg_get_id(const char *cgroup);
int cg_write_numeric(const char *cgroup, const char *control, long value);
extern int cg_run(const char *cgroup,
int (*fn)(const char *cgroup, void *arg),
--
2.43.0
