Messages in this thread | | | From | "Chen, Kenneth W" <> | Subject | RE: Synchronizing Bit operations V2 | Date | Thu, 30 Mar 2006 19:11:47 -0800 |
| |
Christoph Lameter wrote on Thursday, March 30, 2006 7:09 PM > I was referring to the LOCK prefix. Doesnt that insure the processor to > go into a special state and make the bus go into a special state that > implies a barrier?
Yes, that's why on i386 both smp_mb__before_clear_bit() and smp_mb__after_clear_bit() are noop. - 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/
| |