On Wed, Jul 03, 2013 at 10:53:06PM +0800, Ming Lei wrote: > Hi, > > The patchset supports to run giveback of URB in tasklet context, so that > DMA unmapping/mapping on transfer buffer and compelte() callback can be > run with interrupt enabled, then time of HCD interrupt handler(IRQs > disabled time) can be saved much. Also this approach may simplify HCD > since HCD lock needn't be released any more before calling > usb_hcd_giveback_urb(). > > The patchset enables the mechanism on EHCI HCD now. > > In the commit log of patch 5/5, detailed test result on three machines > (ARM A9/A15 dual core, X86) are provided about transfer performance and > ehci irq handling time. From the result, basically no transfer performance > loss is found and ehci irq handling time drops much with the patchset. All now applied, sorry for the delay. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
