On Thu, May 13, 2010 at 12:42:05PM -0700, Tony Lindgren wrote: > 1. In the kernel, we add one more timer queue for critical timers. > The current timer queue(s) stay as it is. > > 2. We allow selecting the timer based on some flag, the default > behaviour being the current default timer queue. > > 3. Then we add next_timer_interupt_critical() to only query the > critical timers along the lines of the current next_timer_interrupt(). > > 4. We implement a custom pm_idle that suspends the system based on > some logic and checking if next_timer_interrupt_critical() is > empty. If the next_timer_interrupt_critical() does not return > anything, we assume it's OK to suspend the system.
Ok. So we stick the untrusted bits of userspace on the critical timer list. Now we get a network packet that generates a wakeup event and gets read by an application. What happens if that application can't fully process the packet in a single timeslice? -- Matthew Garrett | [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
