This patch series implements simple support for building and loading subsystems as modules, both within and outside the kernel source tree. Module unloading is as yet unimplemented - it will require more advanced reference counting in the mount/unmount code, and I plan to work on this soon. Patch #1 sets up the subsys[] array so its contents can be dynamic as modules appear and (eventually) disappear. I introduce an rwsem called subsys_mutex to protect against concurrent loads/unloads/reads, and modify iterations over the array to handle when subsystems are absent. Patch #2 implements an interface for modules to load subsystems, called cgroup_load_subsys, similar to cgroup_init_subsys, and adds a module pointer in struct cgroup_subsys. Patch #3 modifies the net_cls subsystem, which already had some module declarations, to be configurable as a module, which also serves as a simple proof-of-concept. -- bblum _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
