On 02/19/2014 12:10 AM, Thomas Gleixner wrote:
> On Tue, 18 Feb 2014, Preeti Murthy wrote:
>
>> Hi Thomas,
>>
>> With regard to the patch: "tick: Clear broadcast pending bit when
>> switching to oneshot"
>> isn't BROADCAST_EXIT called atleast after initializing the high
>> resolution timers while
>> handling the broadcast IPI and before re-entering idle? This should
>> clear the cpu bit
>> in the pending mask right?
>>
>> idle()
>> |__BROADCAST_ENTER
>> |__halt()
>> |__broadcast_ipi
>> |__init_highres()->clear oneshot mask
>> |__return from interrupt->BROADCAST_EXIT (clear pending mask)
>
> Unfortunately not:
>
> if (cpumask_test_and_clear_cpu(cpu, tick_broadcast_oneshot_mask)) {
> clear pending mask;
> }
>
>> |__re-enter idle
>
> Go figure :)
Ah right! Thanks :)
Regards
Preeti U Murthy
>
> Thanks,
>
> tglx
>
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