diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-03-29 14:37:06 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-04-10 13:54:17 +0200 |
| commit | 1966aaf7d54608e8ddb7ac454b461840e763409a (patch) | |
| tree | 01010d8ff23842f4200e69d2955fd805f50d6e28 /kernel/sched | |
| parent | dbe4b41f9800223949ce72e4289814697e0ea91a (diff) | |
sched/cpuacct: Add cpuacct_acount_field()
So we can remove open-coded cpuacct code in cputime.c.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/51553692.9060008@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cpuacct.c | 23 | ||||
| -rw-r--r-- | kernel/sched/cpuacct.h | 6 | ||||
| -rw-r--r-- | kernel/sched/cputime.c | 18 |
3 files changed, 30 insertions, 17 deletions
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c index 48b5e9184dcc..72bd971ea377 100644 --- a/kernel/sched/cpuacct.c +++ b/kernel/sched/cpuacct.c @@ -218,6 +218,29 @@ void cpuacct_charge(struct task_struct *tsk, u64 cputime) rcu_read_unlock(); } +/* + * Add user/system time to cpuacct. + * + * Note: it's the caller that updates the account of the root cgroup. + */ +void cpuacct_account_field(struct task_struct *p, int index, u64 val) +{ + struct kernel_cpustat *kcpustat; + struct cpuacct *ca; + + if (unlikely(!cpuacct_subsys.active)) + return; + + rcu_read_lock(); + ca = task_ca(p); + while (ca && (ca != &root_cpuacct)) { + kcpustat = this_cpu_ptr(ca->cpustat); + kcpustat->cpustat[index] += val; + ca = parent_ca(ca); + } + rcu_read_unlock(); +} + void __init cpuacct_init(void) { root_cpuacct.cpustat = &kernel_cpustat; diff --git a/kernel/sched/cpuacct.h b/kernel/sched/cpuacct.h index 551acd729562..bd0409b85525 100644 --- a/kernel/sched/cpuacct.h +++ b/kernel/sched/cpuacct.h @@ -43,6 +43,7 @@ static inline struct cpuacct *parent_ca(struct cpuacct *ca) extern void cpuacct_init(void); extern void cpuacct_charge(struct task_struct *tsk, u64 cputime); +extern void cpuacct_account_field(struct task_struct *p, int index, u64 val); #else @@ -54,4 +55,9 @@ static inline void cpuacct_charge(struct task_struct *tsk, u64 cputime) { } +static inline void +cpuacct_account_field(struct task_struct *p, int index, u64 val) +{ +} + #endif diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index 699d59756ece..33508dc78d0c 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -115,10 +115,6 @@ static int irqtime_account_si_update(void) static inline void task_group_account_field(struct task_struct *p, int index, u64 tmp) { -#ifdef CONFIG_CGROUP_CPUACCT - struct kernel_cpustat *kcpustat; - struct cpuacct *ca; -#endif /* * Since all updates are sure to touch the root cgroup, we * get ourselves ahead and touch it first. If the root cgroup @@ -127,19 +123,7 @@ static inline void task_group_account_field(struct task_struct *p, int index, */ __get_cpu_var(kernel_cpustat).cpustat[index] += tmp; -#ifdef CONFIG_CGROUP_CPUACCT - if (unlikely(!cpuacct_subsys.active)) - return; - - rcu_read_lock(); - ca = task_ca(p); - while (ca && (ca != &root_cpuacct)) { - kcpustat = this_cpu_ptr(ca->cpustat); - kcpustat->cpustat[index] += tmp; - ca = parent_ca(ca); - } - rcu_read_unlock(); -#endif + cpuacct_account_field(p, index, tmp); } /* |