cgroup/misc: Remove unused misc_cg_res_total_usage

misc_cg_res_total_usage() was added in 2021 by
commit a72232eabdfc ("cgroup: Add misc cgroup controller")

but has remained unused.

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h
index 49eef10c8e5972b4a8130f13fe2f02704009704b..4bf261d41a6d23e697f0e9ab626cc6827c8ae2af 100644 (file)
--- a/include/linux/misc_cgroup.h
+++ b/include/linux/misc_cgroup.h
@@ -60,7 +60,6 @@ struct misc_cg {
        struct misc_res res[MISC_CG_RES_TYPES];
 };
 
-u64 misc_cg_res_total_usage(enum misc_res_type type);
 int misc_cg_set_capacity(enum misc_res_type type, u64 capacity);
 int misc_cg_try_charge(enum misc_res_type type, struct misc_cg *cg, u64 amount);
 void misc_cg_uncharge(enum misc_res_type type, struct misc_cg *cg, u64 amount);
@@ -104,11 +103,6 @@ static inline void put_misc_cg(struct misc_cg *cg)
 
 #else /* !CONFIG_CGROUP_MISC */
 
-static inline u64 misc_cg_res_total_usage(enum misc_res_type type)
-{
-       return 0;
-}
-
 static inline int misc_cg_set_capacity(enum misc_res_type type, u64 capacity)
 {
        return 0;

diff --git a/kernel/cgroup/misc.c b/kernel/cgroup/misc.c
index 0e26068995a6cec9319d95be8d4c77ea49f4f06e..2fa3a4fb2aaf0a332138ee0ac6778a56996d2062 100644 (file)
--- a/kernel/cgroup/misc.c
+++ b/kernel/cgroup/misc.c
@@ -67,22 +67,6 @@ static inline bool valid_type(enum misc_res_type type)
        return type >= 0 && type < MISC_CG_RES_TYPES;
 }
 
-/**
- * misc_cg_res_total_usage() - Get the current total usage of the resource.
- * @type: misc res type.
- *
- * Context: Any context.
- * Return: Current total usage of the resource.
- */
-u64 misc_cg_res_total_usage(enum misc_res_type type)
-{
-       if (valid_type(type))
-               return atomic64_read(&root_cg.res[type].usage);
-
-       return 0;
-}
-EXPORT_SYMBOL_GPL(misc_cg_res_total_usage);
-
 /**
  * misc_cg_set_capacity() - Set the capacity of the misc cgroup res.
  * @type: Type of the misc res.