On Tue, 2018-05-29 at 11:17 -0700, Evan Green wrote: > This change adds the configuration descriptor to the UFS > sysfs interface. This is done in preparation for making the > interface writable, which will enable provisioning UFS devices > via Linux. > > The configuration descriptor is laid out as a header, then a set of > (usually 8) copies of the same descriptor for each unit. Rather than > creating 8 sets of the same attribute, this interface adds a cfg_unit > file, which can be set as an index that defines which of the 8 > configuration unit descriptors are being shown through sysfs. I don't know any other example of a sysfs attribute that controls the contents of another sysfs attribute so I don't know whether this kind of behavior is acceptable for sysfs attributes. Additionally, how can these two sysfs attributes be used together from concurrently running processes without triggering a race condition? Bart.
