On Tue, Nov 20, 2007 at 05:02:20PM +0100, Nick Piggin wrote: > + TYPE FULL CACHEABLE (SMP CONDITIONAL) IO > + ========= ======================= =========================== ============ > + GENERAL mb() smp_mb() io_mb() > + WRITE wmb() smp_wmb() io_wmb() > + READ rmb() smp_rmb() io_rmb() > + DATA DEP. read_barrier_depends() smp_read_barrier_depends()
A while ago I went through the kernel looking at the uses mb(), wmb() and rmb() and found that every use was either fishy or should have been a smp_mb(), smp_wmb() or wmp_rmb(). Which leads me to the question if there is any need for the non-smp_ variants left or can we just bury them? Ralf - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
