[LTP] [PATCH v2 1/3] API/cgroup: Add io controller

[Richard Palethorpe]

Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
---

V2:
* Fix doc format
* abstract reading io.stat
* abstract stating the underlying device

 lib/tst_cgroup.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/tst_cgroup.c b/lib/tst_cgroup.c
index 57940ba09..feb5b3d07 100644
--- a/lib/tst_cgroup.c
+++ b/lib/tst_cgroup.c
@@ -83,6 +83,7 @@ enum cgroup_ctrl_indx {
 	CTRL_MEMORY = 1,
 	CTRL_CPU,
 	CTRL_CPUSET,
+	CTRL_IO,
 };
 #define CTRLS_MAX CTRL_CPUSET
 
@@ -191,6 +192,11 @@ static const struct cgroup_file cpuset_ctrl_files[] = {
 	{ }
 };
 
+static const struct cgroup_file io_ctrl_files[] = {
+	{ "io.stat", NULL, CTRL_IO },
+	{ }
+};
+
 /* Lookup tree for item names. */
 static struct cgroup_ctrl controllers[] = {
 	[0] = { "cgroup", cgroup_ctrl_files, 0, NULL, 0 },
@@ -203,6 +209,9 @@ static struct cgroup_ctrl controllers[] = {
 	[CTRL_CPUSET] = {
 		"cpuset", cpuset_ctrl_files, CTRL_CPUSET, NULL, 0
 	},
+	[CTRL_IO] = {
+		"io", io_ctrl_files, CTRL_IO, NULL, 0
+	},
 	{ }
 };
 
-- 
2.35.1