On Thu, Jul 20, 2017 at 08:54:36PM +0800, Zhangshaokun wrote: > On 2017/7/19 17:17, Jonathan Cameron wrote: > >> +Super CPU cluster (SCCL) and is made up of 6 CCLs. Each SCCL has two HHAs > >> +(0 - 1) and four DDRCs (0 - 3), respectively. > >> + > >> +HiSilicon SoC uncore PMU driver > >> +--------------------------------------- > >> +Each device PMU has separate registers for event counting, control and > >> +interrupt, and the PMU driver shall register perf PMU drivers like L3C, > >> +HHA and DDRC etc. The available events and configuration options shall > >> +be described in the sysfs, see /sys/devices/hisi_*. > > Is there not a subsystem directory that would make more sense to > > refer to than the full device list? > > > > For uncore devices, it is more reasonable to list in /sys/devices/***. The usual place for these things is /sys/bus/event_source/devices/<pmu name>. The events are described as files under the events directory (one file per event, which describes the encoding) and you can describe other things such as formatting and/or capabilities under other directories too. Take a look at some other PMU drivers to get an idea of how it works. Will -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
