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-rw-r--r--kernel/sched/cpuacct.c33
1 files changed, 11 insertions, 22 deletions
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 44ab32a4fab6..9fbb10383434 100644
--- a/kernel/sched/cpuacct.c
+++ b/kernel/sched/cpuacct.c
@@ -1,24 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
-#include <linux/cgroup.h>
-#include <linux/slab.h>
-#include <linux/percpu.h>
-#include <linux/spinlock.h>
-#include <linux/cpumask.h>
-#include <linux/seq_file.h>
-#include <linux/rcupdate.h>
-#include <linux/kernel_stat.h>
-#include <linux/err.h>
-
-#include "sched.h"
-
/*
* CPU accounting code for task groups.
*
* Based on the work by Paul Menage (menage@google.com) and Balbir Singh
* (balbir@in.ibm.com).
*/
+#include "sched.h"
-/* Time spent by the tasks of the cpu accounting group executing in ... */
+/* Time spent by the tasks of the CPU accounting group executing in ... */
enum cpuacct_stat_index {
CPUACCT_STAT_USER, /* ... user mode */
CPUACCT_STAT_SYSTEM, /* ... kernel mode */
@@ -35,12 +24,12 @@ struct cpuacct_usage {
u64 usages[CPUACCT_STAT_NSTATS];
};
-/* track cpu usage of a group of tasks and its child groups */
+/* track CPU usage of a group of tasks and its child groups */
struct cpuacct {
- struct cgroup_subsys_state css;
- /* cpuusage holds pointer to a u64-type object on every cpu */
- struct cpuacct_usage __percpu *cpuusage;
- struct kernel_cpustat __percpu *cpustat;
+ struct cgroup_subsys_state css;
+ /* cpuusage holds pointer to a u64-type object on every CPU */
+ struct cpuacct_usage __percpu *cpuusage;
+ struct kernel_cpustat __percpu *cpustat;
};
static inline struct cpuacct *css_ca(struct cgroup_subsys_state *css)
@@ -48,7 +37,7 @@ static inline struct cpuacct *css_ca(struct cgroup_subsys_state *css)
return css ? container_of(css, struct cpuacct, css) : NULL;
}
-/* return cpu accounting group to which this task belongs */
+/* Return CPU accounting group to which this task belongs */
static inline struct cpuacct *task_ca(struct task_struct *tsk)
{
return css_ca(task_css(tsk, cpuacct_cgrp_id));
@@ -65,7 +54,7 @@ static struct cpuacct root_cpuacct = {
.cpuusage = &root_cpuacct_cpuusage,
};
-/* create a new cpu accounting group */
+/* Create a new CPU accounting group */
static struct cgroup_subsys_state *
cpuacct_css_alloc(struct cgroup_subsys_state *parent_css)
{
@@ -96,7 +85,7 @@ out:
return ERR_PTR(-ENOMEM);
}
-/* destroy an existing cpu accounting group */
+/* Destroy an existing CPU accounting group */
static void cpuacct_css_free(struct cgroup_subsys_state *css)
{
struct cpuacct *ca = css_ca(css);
@@ -162,7 +151,7 @@ static void cpuacct_cpuusage_write(struct cpuacct *ca, int cpu, u64 val)
#endif
}
-/* return total cpu usage (in nanoseconds) of a group */
+/* Return total CPU usage (in nanoseconds) of a group */
static u64 __cpuusage_read(struct cgroup_subsys_state *css,
enum cpuacct_stat_index index)
{