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authorTejun Heo <tj@kernel.org>2018-04-26 14:29:05 -0700
committerTejun Heo <tj@kernel.org>2018-04-26 14:29:05 -0700
commit6162cef0f741c70eb0c7ac7e6142f85808d8abc4 (patch)
tree355935993063eb4aa28ff6e8491d40380a83db7f /include/linux/cgroup.h
parenta17556f8d9798e8feff9e34d746e489e78ee1dab (diff)
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cgroup: Factor out and expose cgroup_rstat_*() interface functions
cgroup_rstat is being generalized so that controllers can use it too. This patch factors out and exposes the following interface functions. * cgroup_rstat_updated(): Renamed from cgroup_rstat_cpu_updated() for consistency. * cgroup_rstat_flush_hold/release(): Factored out from base stat implementation. * cgroup_rstat_flush(): Verbatim expose. While at it, drop assert on cgroup_rstat_mutex in cgroup_base_stat_flush() as it crosses layers and make a minor comment update. v2: Added EXPORT_SYMBOL_GPL(cgroup_rstat_updated) to fix a build bug. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/cgroup.h')
-rw-r--r--include/linux/cgroup.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 473e0c0abb86..5c6018fef5aa 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -690,11 +690,18 @@ static inline void cgroup_path_from_kernfs_id(const union kernfs_node_id *id,
char *buf, size_t buflen) {}
#endif /* !CONFIG_CGROUPS */
+#ifdef CONFIG_CGROUPS
/*
- * Basic resource stats.
+ * cgroup scalable recursive statistics.
*/
-#ifdef CONFIG_CGROUPS
+void cgroup_rstat_updated(struct cgroup *cgrp, int cpu);
+void cgroup_rstat_flush(struct cgroup *cgrp);
+void cgroup_rstat_flush_hold(struct cgroup *cgrp);
+void cgroup_rstat_flush_release(void);
+/*
+ * Basic resource stats.
+ */
#ifdef CONFIG_CGROUP_CPUACCT
void cpuacct_charge(struct task_struct *tsk, u64 cputime);
void cpuacct_account_field(struct task_struct *tsk, int index, u64 val);
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