On 2018-02-16 13:29:01 [-0500], Alan Stern wrote: > We originally used tasklets because we didn't want to incur the delays > associated with running in a process context. It seems odd to be > reversing that decision now. The theaded interrupt runs SCHED_FIFO priority 50 by default. The only thing that can interrupt it are interrupts, a softirq (not ksoftirqd) and other tasks with a higher priority than 50. There should be no downside performance wise. > > The URBs from the root-hub never create an interrupt so I currently > > process them in a workqueue (I'm not sure if an URB-enqueue in the > > completion handler would break something). > > It worked okay before we changed over to using tasklets. Ah okay. I've seen that HCDs were no longer dropping their internal lock and I wasn't sure if such a change was also applied in RH-code. > Alan Stern Sebastian -- 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
