Enum Controller 

pub enum Controller {
    Cpuset,
    Cpu,
    Memory,
    Pids,
    Io,
}

Cgroup v2 controllers that CgroupManager::setup can enable in cgroup.subtree_control.

Each variant maps to a literal token the kernel parses in cgroup_subtree_control_write. The enum is exhaustive over the controllers the framework’s CgroupOps surface actually writes to (cpuset, cpu, memory, pids, io); cgroup-core knobs (cgroup.freeze, cgroup.procs) are not gated by any controller and never appear here.

Callers pass a BTreeSet<Controller> to setup — sets compose naturally across nested CgroupDef declarations and the deterministic BTreeSet iteration order keeps the rendered subtree_control write stable between runs.

Variants

Cpuset

+cpuset — gates cpuset.cpus, cpuset.cpus.effective, cpuset.mems, cpuset.mems.effective files on every child.

Cpu

+cpu — gates cpu.max, cpu.weight, cpu.weight.nice, cpu.stat, cpu.pressure files on every child.

Memory

+memory — gates memory.max, memory.high, memory.low, memory.min, memory.current, memory.swap.max, memory.events, memory.stat, memory.pressure files.

Pids

+pids — gates pids.max, pids.current, pids.events files.

Io

+io — gates io.max, io.weight, io.bfq.weight, io.stat, io.pressure files.

Implementations

impl Controller

pub fn name(self) -> &'static str

Kernel token written to cgroup.subtree_control (the bare name without the +/- prefix; see Self::as_subtree_control_add for the full token).

Trait Implementations

impl Clone for Controller

fn clone(&self) -> Controller

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Controller

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Controller

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Controller

fn cmp(&self, other: &Controller) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Controller

fn eq(&self, other: &Controller) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Controller

fn partial_cmp(&self, other: &Controller) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Controller

impl Eq for Controller

impl StructuralPartialEq for Controller