On Sun 04-08-13 12:07:21, Tejun Heo wrote: > Hello, Hi Tejun, > Like many other things in cgroup, cgroup_event is way too flexible and > complex - it strives to provide completely flexible event monitoring > facility in cgroup proper which allows any number of users to monitor > custom events. This is overboard, to say the least, Could you be more specific about what is so "overboard" about this interface? I am not familiar with internals much, so I cannot judge the complexity part, but I thought that eventfd was intended for this kind of kernel->userspace notifications. > and I strongly think that cgroup should not any new usages of this > facility and preferably deprecate the existing usages if at all > possible. So you think that vmpressure, oom notification or thresholds are an abuse of this interface? What would you consider a reasonable replacement for those notifications? Or do you think that controller shouldn't be signaling any conditions to the userspace at all? [...] -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>