Sleep and Wake up
Greg KH
greg at kroah.com
Mon May 2 15:28:30 EDT 2011
On Mon, May 02, 2011 at 11:32:32AM -0700, Abu Rasheda wrote:
> I am testing my driver on much faster host processor and facing
> following issues:
>
> My host is too powerful and it can fill up device buffer queue very fast.
What kind of device is this?
> I get best performance when I do busy wait, but this is not desirable
> and is bad design.
>
> I need to sleep and wake up quickly and predictability. Indication
> from device that queue has space, is coming in form of memory write
> (device writes to a memory location of i86 processor).
>
> I tried using wait_event_interruptible_timeout, I am depending on 2nd
> parameter of the function but it wake up is too slow, even tried using
> value of 1.
Why not try increasing the buffer in your driver to handle any amount of
data needed?
thanks,
greg k-h
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