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| -rw-r--r-- | Documentation/admin-guide/cgroup-v1/cpusets.rst | 13 |
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diff --git a/Documentation/admin-guide/cgroup-v1/cpusets.rst b/Documentation/admin-guide/cgroup-v1/cpusets.rst index 86a6ae995d54..5d844ed4df69 100644 --- a/Documentation/admin-guide/cgroup-v1/cpusets.rst +++ b/Documentation/admin-guide/cgroup-v1/cpusets.rst @@ -1,3 +1,5 @@ +.. _cpusets: + ======= CPUSETS ======= @@ -223,6 +225,17 @@ cpu_online_mask using a CPU hotplug notifier, and the mems file automatically tracks the value of node_states[N_MEMORY]--i.e., nodes with memory--using the cpuset_track_online_nodes() hook. +The cpuset.effective_cpus and cpuset.effective_mems files are +normally read-only copies of cpuset.cpus and cpuset.mems files +respectively. If the cpuset cgroup filesystem is mounted with the +special "cpuset_v2_mode" option, the behavior of these files will become +similar to the corresponding files in cpuset v2. In other words, hotplug +events will not change cpuset.cpus and cpuset.mems. Those events will +only affect cpuset.effective_cpus and cpuset.effective_mems which show +the actual cpus and memory nodes that are currently used by this cpuset. +See Documentation/admin-guide/cgroup-v2.rst for more information about +cpuset v2 behavior. + 1.4 What are exclusive cpusets ? -------------------------------- |