> On Oct 8, 2019, at 2:35 AM, Peter Zijlstra wrote:
>
> On Wed, Oct 02, 2019 at 11:43:17PM -0700, Song Liu wrote:
>> This is a rare corner case, but it does happen:
>>
>> In perf_rotate_context(), when the first cpu flexible event fail to
>> schedule, cpu_rotate is 1, while cpu_event is NULL.
On Wed, Oct 02, 2019 at 11:43:17PM -0700, Song Liu wrote:
> This is a rare corner case, but it does happen:
>
> In perf_rotate_context(), when the first cpu flexible event fail to
> schedule, cpu_rotate is 1, while cpu_event is NULL.
You're failing to explain how we get here in the first place.
> On Oct 2, 2019, at 11:43 PM, Song Liu wrote:
>
> This is a rare corner case, but it does happen:
>
> In perf_rotate_context(), when the first cpu flexible event fail to
> schedule, cpu_rotate is 1, while cpu_event is NULL. Since cpu_event is
> NULL, perf_rotate_context will _NOT_ call cpu_c
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