On Fri, May 09, 2014 at 03:40:34PM +0100, Catalin Marinas wrote: > I wonder why we still need TIF_POLLING_NRFLAG for arm64. It was on arm > until commit 16a8016372c42c7628eb (sanitize tsk_is_polling()). On arm64 > we use wfi for idle or a firmware call but in both cases the assumption > is that we need an interrupt for waking up. > > So I think we should remove this macro for arm64.
Does ARM64 support idle=poll? If so, you could keep it for that, otherwise it does indeed appear to be pointless. As to 32bit ARM, are there SMP chips which do not have WFI? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
