Hi Sudeep, On 4/25/2017 4:28 AM, Sudeep Holla wrote: >> With hierarchy, it is possible to get information about relationship between cpus >> and higher order shared resources. If we flatten the hierarchy we lose information >> about relationships and it gets a little hard to clearly represent the idle states of >> shared resources and which cpus share those resources. >> > No, what I meant is to have complete information broken down to the > lowest possible level, but just one file access to get that information. > > IIUC, you had some format already for summary_stat file, just extend > to get all the information you would get reading individual sysfs files > organized hierarchically. I don't think that should matter much as you > would have all these information, just the representation differs. I am > assuming all this data is not used/interpreted on the fly, but mostly > used offline for analysis. Otherwise it's already misuse and we don't > want to expose such user ABI IMO. > > Just to summarize, though I agree this LPI stats are more accurate and > more representative summary, I think it may fade away as we move towards > hardware controlled lower power states. Since we already have cpuidle > stats, I prefer to keep this LPI stats interface to userspace as simple > and minimal as possible and yet helpful to get all the information. Sounds good. I will remove summary_stats and make other changes based on feedback and post next rev. Thanks for the review and feedback! -- Thanks, Prashanth -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
