> > I've not calibrated to verify but that seems to be what the picture is > > showing so there is some chance the time base is off. All the > > instruction > > trace is there to walk it if necessary. There have been some comments > > about NO_HZ adding some overhead from those who measure MHz around > > here for things like MP3 load models. I hadn't looked very closely. > > One question might be is if the timekeeping could be deferred until > after you have serviced the IRQ. Is there a reason to make the ISR wait > for housekeeping? If the system is in NO_HZ mode, the "jiffies" value could be invalid. Some IRQ handlers need it to be valid. - Dave -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
