On Tue, 26 Nov 2019, Michal Hocko wrote: > Hi, > I have just learnt about KOBJ_{ADD,REMOVE} sysfs events triggered on > kmem cache creation/removal when SLUB is configured. This functionality > goes all the way down to initial SLUB merge. I do not see any references > in the Documentation explaining what those events are used for and > whether there are any real users. > > Could you shed some more light into this? I have no idea about what this is. There have been many people who reworked the sysfs support and this has been the cause for a lot of breakage over the years.