[PATCH] dwc_otg: Reduce interrupt load

[Sebastian Huber]

Hello,

On 08/11/15 10:45, Hans Petter Selasky wrote:
> On 11/02/15 13:41, Hans Petter Selasky wrote:
>> On 11/02/15 13:22, Sebastian Huber wrote:
>>>
>>>
>>> On 30/10/15 15:53, Hans Petter Selasky wrote:
>>>> On 10/30/15 14:38, Sebastian Huber wrote:
>>>>> Tested on an Altera Cyclone V development kit.  Here the 
>>>>> controller has
>>>>> 16 host channels.  This change significantly reduced the time 
>>>>> spent in
>>>>> the dwc_otg_interrupt_poll_locked() function.
>>>>
>>>> Hi,
>>>>
>>>> Thank you for your optimisation patch:
>>>>
>>>> https://svnweb.freebsd.org/changeset/base/290195
>>>
>
> Hi Sebastian,
>
> You maybe also want to port these two patches, and measure the CPU 
> load again:
>
> https://svnweb.freebsd.org/changeset/base/290489
> https://svnweb.freebsd.org/changeset/base/290542

I didn't notice a big overall difference. Highest CPU load is now due to 
dwc_otg_read_fifo() instead of dwc_otg_interrupt_poll_locked().

-- 
Sebastian Huber, embedded brains GmbH

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