Messages in this thread Patch in this message | | | Date | Thu, 28 Mar 2013 12:12:32 +0800 | From | Li Zefan <> | Subject | [PATCH 3/7] cpuacct: Add cpuacct_init() |
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So we don't open-coded initialization of cpuacct in core.c.
Signed-off-by: Li Zefan <lizefan@huawei.com> --- kernel/sched/core.c | 8 ++------ kernel/sched/cpuacct.c | 7 +++++++ kernel/sched/cpuacct.h | 5 +++++ 3 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 8eb3096..9f5a804 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6860,12 +6860,8 @@ void __init sched_init(void) #endif /* CONFIG_CGROUP_SCHED */ -#ifdef CONFIG_CGROUP_CPUACCT - root_cpuacct.cpustat = &kernel_cpustat; - root_cpuacct.cpuusage = alloc_percpu(u64); - /* Too early, not expected to fail */ - BUG_ON(!root_cpuacct.cpuusage); -#endif + cpuacct_init(); + for_each_possible_cpu(i) { struct rq *rq; diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c index 50ec24b..48b5e91 100644 --- a/kernel/sched/cpuacct.c +++ b/kernel/sched/cpuacct.c @@ -218,6 +218,13 @@ void cpuacct_charge(struct task_struct *tsk, u64 cputime) rcu_read_unlock(); } +void __init cpuacct_init(void) +{ + root_cpuacct.cpustat = &kernel_cpustat; + root_cpuacct.cpuusage = alloc_percpu(u64); + BUG_ON(!root_cpuacct.cpuusage); /* Too early, not expected to fail */ +} + struct cgroup_subsys cpuacct_subsys = { .name = "cpuacct", .css_alloc = cpuacct_css_alloc, diff --git a/kernel/sched/cpuacct.h b/kernel/sched/cpuacct.h index a7f3d4a..551acd7 100644 --- a/kernel/sched/cpuacct.h +++ b/kernel/sched/cpuacct.h @@ -41,10 +41,15 @@ static inline struct cpuacct *parent_ca(struct cpuacct *ca) return cgroup_ca(ca->css.cgroup->parent); } +extern void cpuacct_init(void); extern void cpuacct_charge(struct task_struct *tsk, u64 cputime); #else +static inline void cpuacct_init(void) +{ +} + static inline void cpuacct_charge(struct task_struct *tsk, u64 cputime) { } -- 1.8.0.2
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