[Devel] [PATCH vz10 v2] cpuacct: expose interface file in cgroup v2

[Aleksei Oladko]

In commit 0a76d99f5aa, the cpuacct controller was implicitly enabled in
cgroup v2. This patch enables user access to the cpuacct interface files
in cgroup v2, allowing statistics such as cpuacct.usage_percpu to be
retrieved in the same way as in cgroup v1.

https://virtuozzo.atlassian.net/browse/VSTOR-100092

v2: leveraged a single cftypes set for both v1 and v2 cgroups

Signed-off-by: Aleksei Oladko <aleksey.oladko at virtuozzo.com>
---
 kernel/sched/cpuacct.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 65a331807e5d..09b8cea57347 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -363,6 +363,7 @@ struct cgroup_subsys cpuacct_cgrp_subsys = {
 	.css_alloc	= cpuacct_css_alloc,
 	.css_free	= cpuacct_css_free,
 	.legacy_cftypes	= files,
+	.dfl_cftypes	= files,
 	.early_init	= true,
 
 	.implicit_on_dfl = true,
-- 
2.43.0