| Re: [PATCH v3 1/6] measure exec_clock for rt sched entities [message #46615 is a reply to message #46613] |
Wed, 30 May 2012 10:42   |
Glauber Costa
Messages: 916
Registered: October 2011
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Senior Member |
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On 05/30/2012 02:42 PM, Peter Zijlstra wrote:
> On Wed, 2012-05-30 at 14:32 +0400, Glauber Costa wrote:
>>>> + for_each_sched_rt_entity(rt_se) {
>>>> + rt_rq = rt_rq_of_se(rt_se);
>>>> + schedstat_add(rt_rq, exec_clock, delta_exec);
>>>> + }
>>>> +
>>>> if (!rt_bandwidth_enabled())
>>>> return;
>>>
>>> See, this just makes me sad.. you now have a double
>>> for_each_sched_rt_entity() loop.
>>
>> The way I read the rt.c code, it it is called from enqueue_task_rt only
>> once.
>
> Ah, what I meant was, right after that !rt_bandwidth_enabled() muck we
> do another for_each_sched_rt_entity() walk.
I guess I can fold it there...
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