On Wed, 28 Nov 2007, Daniel Walker wrote: > > Ignoring the ARM side of things for a sec, handle_simple_irq() will > mask() the interrupt in the special case that an interrupt is already in > the processes of being handled.. handle_simple_irq() also unmasks when > it finishes handling an interrupt (something real time adds for some > reason) .. > > In terms of threading the irq everything is the same except there is no > unmask() call when the thread finishes .. > OK, to be honest, I never fully understood the concept of this "simple_irq". I figured it was because of the ARM architecture. Your arguments seem reasonable and you are probably correct. But I didn't write this code, nor do I understand it, and before I go ahead and change it, I'll wait to hear input from Thomas. Hopefully, he'll be back soon. Perhaps my confusion about the simple_irq part is from the bug you are trying to fix. I've been confused by why it was different ;-) -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
