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authorMaciej S. Szmigiero2018-01-10 23:33:19 +0100
committerTejun Heo2018-01-16 08:07:09 -0800
commitc4e0842bf141178fd5bc0cfe364609ec782fb384 (patch)
tree3d2b86166cf8d8b55214b40763478268ad4fc988 /ipc/mqueue.c
parent2877cbe6501e20dd076c7677f768d50bcc87267b (diff)
cgroup, docs: document the root cgroup behavior of cpu and io controllers
Currently, cgroups v2 documentation contains only a generic remark that "How resource consumption in the root cgroup is governed is up to each controller", which isn't really telling users much, who need to dig in the code and / or commit messages to learn the exact behavior. In cgroups v1 at least the blkio controller had its operation with respect to competition between child threads and child cgroups documented in blkio-controller.txt, with references to cfq-iosched.txt. Also, cgroups v2 documentation describes v1 behavior of both cpu and blkio controllers in an "Issues with v1" section. Let's document this behavior also for cgroups v2 to make life easier for users. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Tejun Heo <tj@kernel.org>
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