From d2cc5ed6949085cfba30ec5228816cf6eb1d02b9 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Mon, 25 Sep 2017 08:12:04 -0700
Subject: [PATCH] cpuacct: Introduce cgroup_account_cputime[_field]()
Introduce cgroup_account_cputime[_field]() which wrap cpuacct_charge()
and cgroup_account_field(). This doesn't introduce any functional
changes and will be used to add cgroup basic resource accounting.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
---
include/linux/cgroup.h | 38 ++++++++++++++++++++++++++++++++++++++
kernel/sched/cpuacct.h | 17 -----------------
kernel/sched/cputime.c | 2 +-
kernel/sched/deadline.c | 2 +-
kernel/sched/fair.c | 2 +-
kernel/sched/rt.c | 2 +-
kernel/sched/sched.h | 2 +-
kernel/sched/stop_task.c | 2 +-
8 files changed, 44 insertions(+), 23 deletions(-)
delete mode 100644 kernel/sched/cpuacct.h
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index d023ac5e377f4..6cd5793293105 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -22,6 +22,7 @@
#include <linux/nsproxy.h>
#include <linux/user_namespace.h>
#include <linux/refcount.h>
+#include <linux/kernel_stat.h>
#include <linux/cgroup-defs.h>
@@ -688,6 +689,43 @@ static inline void cgroup_path_from_kernfs_id(const union kernfs_node_id *id,
char *buf, size_t buflen) {}
#endif /* !CONFIG_CGROUPS */
+/*
+ * Basic resource stats.
+ */
+#ifdef CONFIG_CGROUPS
+
+#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);
+#else
+static inline void cpuacct_charge(struct task_struct *tsk, u64 cputime) {}
+static inline void cpuacct_account_field(struct task_struct *tsk, int index,
+ u64 val) {}
+#endif
+
+static inline void cgroup_account_cputime(struct task_struct *task,
+ u64 delta_exec)
+{
+ cpuacct_charge(task, delta_exec);
+}
+
+static inline void cgroup_account_cputime_field(struct task_struct *task,
+ enum cpu_usage_stat index,
+ u64 delta_exec)
+{
+ cpuacct_account_field(task, index, delta_exec);
+}
+
+#else /* CONFIG_CGROUPS */
+
+static inline void cgroup_account_cputime(struct task_struct *task,
+ u64 delta_exec) {}
+static inline void cgroup_account_cputime_field(struct task_struct *task,
+ enum cpu_usage_stat index,
+ u64 delta_exec) {}
+
+#endif /* CONFIG_CGROUPS */
+
/*
* sock->sk_cgrp_data handling. For more info, see sock_cgroup_data
* definition in cgroup-defs.h.
diff --git a/kernel/sched/cpuacct.h b/kernel/sched/cpuacct.h
deleted file mode 100644
index ba72807c73d45..0000000000000
--- a/kernel/sched/cpuacct.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifdef CONFIG_CGROUP_CPUACCT
-
-extern void cpuacct_charge(struct task_struct *tsk, u64 cputime);
-extern void cpuacct_account_field(struct task_struct *tsk, int index, u64 val);
-
-#else
-
-static inline void cpuacct_charge(struct task_struct *tsk, u64 cputime)
-{
-}
-
-static inline void
-cpuacct_account_field(struct task_struct *tsk, int index, u64 val)
-{
-}
-
-#endif
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 8839b6e8a104a..e01b699bbd5b9 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -109,7 +109,7 @@ static inline void task_group_account_field(struct task_struct *p, int index,
*/
__this_cpu_add(kernel_cpustat.cpustat[index], tmp);
- cpuacct_account_field(p, index, tmp);
+ cgroup_account_cputime_field(p, index, tmp);
}
/*
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 0191ec7667c32..abd913c1b99e6 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1143,7 +1143,7 @@ static void update_curr_dl(struct rq *rq)
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = rq_clock_task(rq);
- cpuacct_charge(curr, delta_exec);
+ cgroup_account_cputime(curr, delta_exec);
sched_rt_avg_update(rq, delta_exec);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 70ba32e08a231..0ae69af95b8b8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -851,7 +851,7 @@ static void update_curr(struct cfs_rq *cfs_rq)
struct task_struct *curtask = task_of(curr);
trace_sched_stat_runtime(curtask, delta_exec, curr->vruntime);
- cpuacct_charge(curtask, delta_exec);
+ cgroup_account_cputime(curtask, delta_exec);
account_group_exec_runtime(curtask, delta_exec);
}
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 0af5ca9e3e3f1..fdc2c5d1f82ee 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -979,7 +979,7 @@ static void update_curr_rt(struct rq *rq)
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = rq_clock_task(rq);
- cpuacct_charge(curr, delta_exec);
+ cgroup_account_cputime(curr, delta_exec);
sched_rt_avg_update(rq, delta_exec);
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 14db76cd496ff..f0b98f9788430 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -29,6 +29,7 @@
#include <linux/irq_work.h>
#include <linux/tick.h>
#include <linux/slab.h>
+#include <linux/cgroup.h>
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
@@ -36,7 +37,6 @@
#include "cpupri.h"
#include "cpudeadline.h"
-#include "cpuacct.h"
#ifdef CONFIG_SCHED_DEBUG
# define SCHED_WARN_ON(x) WARN_ONCE(x, #x)
diff --git a/kernel/sched/stop_task.c b/kernel/sched/stop_task.c
index 9f69fb6308537..ec0bb5ab90244 100644
--- a/kernel/sched/stop_task.c
+++ b/kernel/sched/stop_task.c
@@ -71,7 +71,7 @@ static void put_prev_task_stop(struct rq *rq, struct task_struct *prev)
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = rq_clock_task(rq);
- cpuacct_charge(curr, delta_exec);
+ cgroup_account_cputime(curr, delta_exec);
}
static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued)
--
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