On Tue, Jun 21, 2011 at 11:26:27AM +0200, Per Forlin wrote: > Here are the results. It looks like this patch is either a no-op or slightly worse. As people have been telling me that dsb is rather expensive, and this patch results in less dsbs, I'm finding these results hard to believe. It seems to be saying that dsb is an effective no-op on your platform. So either people are wrong about dsb being expensive, the patch is wrong, or there's something wrong with these results/test method. You do have an error in the ported patch, as that hasn't updated the v7 cache cleaning code to remove the dsb() there, but that would only affect the write tests. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
