linux:kernel:control_groups
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| linux:kernel:control_groups [2019/12/15 21:55] – peter | linux:kernel:control_groups [2020/07/15 09:30] (current) – external edit 127.0.0.1 | ||
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| User level code may create and destroy cgroups by name in an instance of the cgroup virtual file system, specify and query to which cgroup a task is assigned, and list the task pids assigned to a cgroup. Those creations and assignments only affect the hierarchy associated with that instance of the cgroup file system. | User level code may create and destroy cgroups by name in an instance of the cgroup virtual file system, specify and query to which cgroup a task is assigned, and list the task pids assigned to a cgroup. Those creations and assignments only affect the hierarchy associated with that instance of the cgroup file system. | ||
| - | On their own, the only use for cgroups is for simple job tracking. The intention is that other subsystems hook into the generic cgroup support to provide new attributes for cgroups, such as accounting/ | + | On their own, the only use for cgroups is for simple job tracking. The intention is that other subsystems hook into the generic cgroup support to provide new attributes for cgroups, such as accounting/ |
| ---- | ---- | ||
| Line 115: | Line 115: | ||
| * **release_agent**: | * **release_agent**: | ||
| - | Other subsystems such as [[Kernel: | + | Other subsystems such as [[Linux:Kernel:CPU Sets|cpusets]] may add additional files in each cgroup dir. |
| New cgroups are created using the mkdir system call or shell command. | New cgroups are created using the mkdir system call or shell command. | ||
| Line 453: | Line 453: | ||
| </ | </ | ||
| - | Called at the end of **cgroup_clone()** to do any parameter initialization which might be required before a task could attach. | + | Called at the end of **cgroup_clone()** to do any parameter initialization which might be required before a task could attach. |
| <code c> | <code c> | ||
linux/kernel/control_groups.1576446916.txt.gz · Last modified: 2020/07/15 09:30 (external edit)