Possible regression due to "tick: broadcast: Prevent livelock from event handler"

Sudeep Holla sudeep.holla at arm.com
Fri Jul 3 07:57:24 PDT 2015



On 03/07/15 15:54, Thomas Gleixner wrote:
> On Fri, 3 Jul 2015, Sudeep Holla wrote:
>> On 03/07/15 15:37, Wolfram Sang wrote:
>>>
>>>> So this is a single core machine and uses the em_sti timer w/o the
>>>> broadcast nonsense. In Simons case it looks like em_sti is used as
>>>> broadcast device.
>>>
>>> We use the same board. Just my kernel has SMP=n.
>>>
>>
>> If it's UP build, then GENERIC_CLOCKEVENTS_BROADCAST is disabled. You
>> may be hitting the issue I reported[1] and is still under discussion.
>
> Nope. The UP version uses a non affected timer.
>

Ah OK, sorry for the noise then.

Regards,
Sudeep



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