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sched/cpuacct: No need to check subsys active state

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Now we're guaranteed when cpuacct_charge() and
cpuacct_account_field() are called, cpuacct has already been
properly initialized, so we no longer need those checks.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5155384C.7000508@huawei.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Li Zefan 2013-03-29 14:44:28 +08:00 committed by Ingo Molnar
parent 621e2de024
commit a2b0ae25fc
1 changed files with 0 additions and 6 deletions
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6
kernel/sched/cpuacct.c
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@ -247,9 +247,6 @@ void cpuacct_charge(struct task_struct *tsk, u64 cputime)
struct cpuacct *ca;
int cpu;
if (unlikely(!cpuacct_subsys.active))
return;
cpu = task_cpu(tsk);
rcu_read_lock();
@ -278,9 +275,6 @@ 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 != &root_cpuacct) {