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authorLi Zefan <lizefan@huawei.com>2013-03-29 14:36:55 +0800
committerIngo Molnar <mingo@kernel.org>2013-04-10 13:54:16 +0200
commitdbe4b41f9800223949ce72e4289814697e0ea91a (patch)
tree11f24c688852b29656724f0e7266f5b04d4291c6 /kernel/sched/cpuacct.c
parent60fed7891d4115be0ed7ff9ce6851eda80533c64 (diff)
downloadlinux-dbe4b41f9800223949ce72e4289814697e0ea91a.tar.bz2
sched/cpuacct: Add cpuacct_init()
So we don't open-coded initialization of cpuacct in core.c. Signed-off-by: Li Zefan <lizefan@huawei.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/51553687.1060906@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/cpuacct.c')
-rw-r--r--kernel/sched/cpuacct.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c
index 50ec24b6193d..48b5e9184dcc 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,