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Message-ID: <20091102212825.GA13692@andrew.cmu.edu> Date: Mon, 2 Nov 2009 16:28:26 -0500 From: Ben Blum <bblum@...rew.cmu.edu> To: linux-kernel@...r.kernel.org, containers@...ts.linux-foundation.org, lizf@...fujistu.com, akpm@...ux-foundation.org, menage@...gle.com, bblum@...rew.cmu.edu Subject: [RFC][PATCH 0/3] cgroups: support for module-loadable subsystems 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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