On 08/05/14 19:34, Nicolas Pitre wrote: > >> It allows us to synchronize with another CPU that may be inside >> gic_raise_softirq(). If the other CPU was in that function then this CPU >> would wait until it was done sending the IPI to continue along and >> reroute them. If the other CPU was just about to grab the sgi lock then >> we would guarantee that the CPU would see the new gic_cpu_map value and >> thus any redirection is not necessary. > OK I get it now. > >> I hoped that the commit text explained this. > I'm possibly not bright enough to get it the first time. > >> Honestly it probably isn't a noticeable performance boost either way >> but I think this is the best we can do. > Sure, agreed. > > > Ok, so which patch is preferred? -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
