hi all: 2014-03-19 17:57 GMT+08:00 vichy <vichy.kuo@xxxxxxxxx>: > hi Ming.lei: > 2014-03-17 22:01 GMT+08:00 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: >> On Sun, 16 Mar 2014, vichy wrote: >> >>> hi all: >>> recently we bump to system performance issue when usb irq take quite long. >>> I found below link for discussing how to short >>> > > in http://permalink.gmane.org/gmane.linux.usb.general/89363 > > I have some questions about this patch. > 1. is there patch or kernel config I can use to measure man/avage usb > irq time consuming like the above link show > > 2. I see this patch is roll back in commit > "c04ee4b1136e462722567cf6e76bb35a181574a7" and intend to be ready in > 3.13-rc1 > Is there special reason why we need to roll back? why this patch didn't implement xhci? in xhci-pci.c there is no HCD_HB at xhci_pci_hc_driver .flags = HCD_MEMORY | HCD_USB3 | HCD_SHARED, does that mean xhci don't need to pug complete in the BH? thanks for your help, -- 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
