Struct linux_perf_event_reader::PerfEventAttr

pub struct PerfEventAttr {

    pub type_: PerfEventType,
    pub sampling_policy: SamplingPolicy,
    pub sample_format: SampleFormat,
    pub read_format: ReadFormat,
    pub flags: AttrFlags,
    pub wakeup_policy: WakeupPolicy,
    pub branch_sample_format: BranchSampleFormat,
    pub sample_regs_user: u64,
    pub sample_stack_user: u32,
    pub clock: PerfClock,
    pub sample_regs_intr: u64,
    pub aux_watermark: u32,
    pub sample_max_stack: u16,
    pub aux_sample_size: u32,
    pub sig_data: u64,
}

perf_event_attr

Fields

type_: PerfEventType

The type of the perf event.

sampling_policy: SamplingPolicy

The sampling policy.

sample_format: SampleFormat

Specifies values included in sample. (original name sample_type)

read_format: ReadFormat

Specifies the structure values returned by read() on a perf event fd, see ReadFormat.

flags: AttrFlags

Bitset of flags.

wakeup_policy: WakeupPolicy

The wake-up policy.

branch_sample_format: BranchSampleFormat

Branch-sample specific flags.

sample_regs_user: u64

Defines set of user regs to dump on samples. See asm/perf_regs.h for details.

sample_stack_user: u32

Defines size of the user stack to dump on samples.

clock: PerfClock

The clock ID.

sample_regs_intr: u64

Defines set of regs to dump for each sample state captured on:

• precise = 0: PMU interrupt
• precise > 0: sampled instruction

See asm/perf_regs.h for details.

aux_watermark: u32

Wakeup watermark for AUX area

sample_max_stack: u16

When collecting stacks, this is the maximum number of stack frames (user + kernel) to collect.

aux_sample_size: u32

When sampling AUX events, this is the size of the AUX sample.

sig_data: u64

User provided data if sigtrap=1, passed back to user via siginfo_t::si_perf_data, e.g. to permit user to identify the event. Note, siginfo_t::si_perf_data is long-sized, and sig_data will be truncated accordingly on 32 bit architectures.

Implementations

impl PerfEventAttr

pub fn parse<R: Read, T: ByteOrder>(reader: R) -> Result<(Self, u64), Error>

Parse from a reader. On success, this returns the parsed attribute and the number of bytes that were read from the reader. This matches the self-reported size in the attribute.

Trait Implementations

impl Clone for PerfEventAttr

fn clone(&self) -> PerfEventAttr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PerfEventAttr

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

Formats the value using the given formatter.

impl Copy for PerfEventAttr