> > I'd like to know more details on when exactly it is safe to use the simpler
> > cli()/sti() combination over the save_flags()/restore_flags().
>
> When you know interrupts were previously enabled and also know nobody will
> ever call the function now or in the future with interrupts disabled. In
> general I think "don't do it" is the answer.
Okay, I feel better now. I have only ever used save_flags() but I worried
I might be being to anal. Does this leave cli()/sti() to only be
appropriate within functions that will only be invoked as part of a system
call then? Such as device driver open/read/etc?
thanks,
-bp
-- B. James Phillippe . bryan@terran.org Software Engineer, WGT Inc. . http://www.terran.org/~bryan
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/