On Mon, 19 Mar 2007, Momchil Velikov wrote: > Robert P. J. Day wrote: > > i thought you couldn't use semaphores from interrupt context, anyway. > > can someone clarify this? thanks. > > You could increment a semaphore in interrupt context. You can't > decrement it, as it potentially blocks. right, i should have been more careful in my phrasing. in general, you can't do anything in interrupt context that might cause a "sleep," since sleeping can be done only in process context. is that a fairly accurate way to put it? rday p.s. i removed arjan's name from the CC list, i suspect he doesn't need to get two copies of this thread. :-) -- ======================================================================== Robert P. J. Day Linux Consulting, Training and Annoying Kernel Pedantry Waterloo, Ontario, CANADA http://fsdev.net/wiki/index.php?title=Main_Page ======================================================================== -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
