Enum SampleSkid 

pub enum SampleSkid {
    Arbitrary = 0,
    Constant = 1,
    RequestZero = 2,
    RequireZero = 3,
}

Configuration of how much skid is allowed when gathering samples.

Skid is the number of instructions that occur between an event occuring and a sample being gathered by the kernel. Less skid is better but there are hardware limitations around how small the skid can be.

Also see Builder::precise_ip.

Variants

Arbitrary = 0

There may be an arbitrary number of instructions between the event and the recorded instruction pointer.

Constant = 1

There may be a constant number of instructions between the event and and the recorded instruction pointer.

RequestZero = 2

We’ve requested that there be 0 skid. This does not guarantee that samples will actually have 0 skid.

RequireZero = 3

Skid must be 0. If skid is 0 then the generated sample records will have the PERF_RECORD_MISC_EXACT_IP bit set.

Trait Implementations

impl Clone for SampleSkid

fn clone(&self) -> SampleSkid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SampleSkid

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

Formats the value using the given formatter.

impl Hash for SampleSkid

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 PartialEq for SampleSkid

fn eq(&self, other: &SampleSkid) -> 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 Copy for SampleSkid

impl Eq for SampleSkid

impl StructuralPartialEq for SampleSkid