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