Re: [uml-devel] [PATCH v2] EPOLL Interrupt Controller V2.0

[Anton Ivanov <anton.ivanov@kot-begemot.co.uk>]

It throws a couple of harmless "epoll del fd" warnings on reboot which 
result the fact that disable_fd/enable_fd are not removed in the 
terminal/line code.

These are harmless and will go away once the term/line code gets support 
for real write IRQs in addition to read at some point in the future.

I have fixed the file descriptor leak in the reboot case.

A.

On 09/11/15 14:33, Anton Ivanov wrote:
> Epoll based interrupt controller.
>
> IMPROVES: IO loop performance - no per fd lookups, allowing for
> 15% IO speedup in minimal config going to 100s of % with many
> devices - a N^N lookup is now replaced by a log(N)
>
> ADDS: True Write IRQ functionality
>
> OBSOLETES: The need to call reactivate_fd() in any driver which
> has only read IRQ semantics. Write IRQs work, but will need to
> be updated to use this fully.
>
> Potentially (with a change in API) will allow both edge and level
> IRQ semantics.
>
> Pre-requisite for using packet mmap and multipacket read/write
> which do not get along with poll() very well.
>
> Signed-off-by: Anton Ivanov <aivanov@brocade.com>


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