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-rw-r--r--include/linux/cgroup-defs.h1
-rw-r--r--include/linux/cgroup.h7
2 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index 1a1f3e8faceb..e1c705fdfa7c 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -113,6 +113,7 @@ enum {
CFTYPE_NO_PREFIX = (1 << 3), /* (DON'T USE FOR NEW FILES) no subsys prefix */
CFTYPE_WORLD_WRITABLE = (1 << 4), /* (DON'T USE FOR NEW FILES) S_IWUGO */
CFTYPE_DEBUG = (1 << 5), /* create when cgroup_debug */
+ CFTYPE_PRESSURE = (1 << 6), /* only if pressure feature is enabled */
/* internal flags, do not use outside cgroup core proper */
__CFTYPE_ONLY_ON_DFL = (1 << 16), /* only on default hierarchy */
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 9047fa853dd3..2cc237e3e8b3 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -676,6 +676,8 @@ static inline struct psi_group *cgroup_psi(struct cgroup *cgrp)
return &cgrp->psi;
}
+bool cgroup_psi_enabled(void);
+
static inline void cgroup_init_kthreadd(void)
{
/*
@@ -735,6 +737,11 @@ static inline struct psi_group *cgroup_psi(struct cgroup *cgrp)
return NULL;
}
+static inline bool cgroup_psi_enabled(void)
+{
+ return false;
+}
+
static inline bool task_under_cgroup_hierarchy(struct task_struct *task,
struct cgroup *ancestor)
{