Hi all, The SCHED_DEADLINE review resulted in the following three patches; The first is a cleanup of various copies of the same GCC loop optimization work-around. I don't think this patch is too controversial, at worst I've picked a wrong name, but I wanted to get it out there in case people know more sites. The second two implement a few u128 operations so we can do 128bit math.. I know a few people will die a little inside, but having nanosecond granularity time accounting leads to very big numbers very quickly and when you need to multiply them 64bit really isn't that much. So far its just mult, add and cmp for u128, no divisions quite yet. I realize that on 32bit archs mult_u128 will result in like 8 multiplication instructions that's still nowhere near the most expensive thing ever. Also, I suck at gcc inline asm, so patch 3/3 is very likely completely wrong, in any case none of the patches has even been near a compiler and this really is just an RFC to probe if we want to go here at all. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
