Documentation/cgroup-v1: fix outdated programming details
The cgroup-v1 documentation is out of date in a few places: * cgroup controllers can no longer be compiled as modules since commit3ed80a6
("cgroup: drop module support"); the functions and fields referenced here no longer exist. * Controllers need to create of a cgroup_subsys object named "<name>_cgrp_subsys" instead of "<name>_subsys" since commit073219e
("cgroup: clean up cgroup_subsys names and initialization") Cc: Tejun Heo <tj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -523,12 +523,7 @@ Accessing a task's cgroup pointer may be done in the following ways:
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Each subsystem should:
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- add an entry in linux/cgroup_subsys.h
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- define a cgroup_subsys object called <name>_subsys
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If a subsystem can be compiled as a module, it should also have in its
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module initcall a call to cgroup_load_subsys(), and in its exitcall a
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call to cgroup_unload_subsys(). It should also set its_subsys.module =
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THIS_MODULE in its .c file.
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- define a cgroup_subsys object called <name>_cgrp_subsys
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Each subsystem may export the following methods. The only mandatory
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methods are css_alloc/free. Any others that are null are presumed to
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