On Tue, Jul 21, 2015 at 09:39:23PM -0700, Andy Lutomirski wrote: > So your shiny perf profile shows cumulative time in whatever called > them. Sure, this is arguably silly if we're stuck with frame > pointers.
You can count 20ish cycles tops for any one of them. At least that was from the last time when comparing POPCNT perf to the __sw_hweight* ones. IOW, POPCNT didn't show any improvement vs those sw versions. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/