On Mon, 2007-05-14 at 12:42 +0530, Learning Linux wrote: [...] > > On the other hand, when you sleep in a given context, the scheduler is > > invoked. That means that the ISR routine would be replaced by a process > > from the scheduler's queue(s). But how would you ever know to reschedule > > the ISR? After all, it is asynchronous. > > Uh, this is what I have my doubt about. Yes, the scheduler may try to > replace the current process (already interrupted by the ISR) with The interrupt doesn't interrupt a "process" as such but it interrupts the kernel itself. And it is totally random and irrelevant which process (or tasklet or work-queue or kernel-thread or whatever) is running right now since the interrupt simply indicates some event from some piece of hardware. > another process. Bernd -- Firmix Software GmbH http://www.firmix.at/ mobil: +43 664 4416156 fax: +43 1 7890849-55 Embedded Linux Development and Services -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
