There are 2 use cases:

- delivering RX queue interrupts directpy to the worker which handles specific 
queue
- waking up worker thread over eventfd

None of them is used today, but it should be at some point...

-- 
DAmjan

> On 5 Feb 2020, at 08:39, Nitin Saxena <nsax...@marvell.com> wrote:
> 
> Hi,
>
> I understand the purpose of unix-epoll-input PRE_INPUT node on main thread 
> but I am not able to envision why it is required on worker core.
> The way I see it all clib_file_xx() operations are on main core.
>
> It will be helpful if any scenario can be explained where presence of 
> unix-epoll-input() on worker core solves the purpose
>
> Thanks,
> Nitin
> 

-- 
Damjan

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