diff options
author | Li Zefan <lizefan@huawei.com> | 2013-03-29 14:38:13 +0800 |
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committer | Ingo Molnar <mingo@kernel.org> | 2013-04-10 13:54:19 +0200 |
commit | d1712796a880bea0a44739941116001923f3275b (patch) | |
tree | fe7aaf8dcf6569f05fc741c01bd7beb5633244f6 /kernel/sched/cpuacct.c | |
parent | 5f40d804325e925409907e29f46ecb012090b6c2 (diff) |
sched/cpuacct: Clean up cpuacct.h
Now most of the code in cpuacct.h can be moved to cpuacct.c
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/515536D5.2080401@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/cpuacct.c')
-rw-r--r-- | kernel/sched/cpuacct.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c index 071ae8d08181..9305fd2f8cf9 100644 --- a/kernel/sched/cpuacct.c +++ b/kernel/sched/cpuacct.c @@ -16,7 +16,49 @@ * (balbir@in.ibm.com). */ -struct cpuacct root_cpuacct; +/* 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 */ + + CPUACCT_STAT_NSTATS, +}; + +/* 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 */ + u64 __percpu *cpuusage; + struct kernel_cpustat __percpu *cpustat; +}; + +/* return cpu accounting group corresponding to this container */ +static inline struct cpuacct *cgroup_ca(struct cgroup *cgrp) +{ + return container_of(cgroup_subsys_state(cgrp, cpuacct_subsys_id), + struct cpuacct, css); +} + +/* return cpu accounting group to which this task belongs */ +static inline struct cpuacct *task_ca(struct task_struct *tsk) +{ + return container_of(task_subsys_state(tsk, cpuacct_subsys_id), + struct cpuacct, css); +} + +static inline struct cpuacct *__parent_ca(struct cpuacct *ca) +{ + return cgroup_ca(ca->css.cgroup->parent); +} + +static inline struct cpuacct *parent_ca(struct cpuacct *ca) +{ + if (!ca->css.cgroup->parent) + return NULL; + return cgroup_ca(ca->css.cgroup->parent); +} + +static struct cpuacct root_cpuacct; /* create a new cpu accounting group */ static struct cgroup_subsys_state *cpuacct_css_alloc(struct cgroup *cgrp) |