On Sun, Mar 17, 2002 at 01:33:04AM +0100, Daniel Phillips wrote:
> On March 16, 2002 01:40 am, yodaiken@fsmlabs.com wrote:
> >
> > Without preempt:
> > x = movefrom processor register;
// if preemption is on, we can be preempted and restart
// on another processor so x will be wrong
> > do_something with x
> >
> > is safe in SMP
> > With [preempt] it requires a lock.
>
> It must be a trick question. Why would it?
See comment.
>
> --
> Daniel
-- --------------------------------------------------------- Victor Yodaiken Finite State Machine Labs: The RTLinux Company. www.fsmlabs.com www.rtlinux.com- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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