devela::_dep::nc

Struct perf_event_attr_t

#[repr(C)]
pub struct perf_event_attr_t {
Show 45 fields
    pub type_: u32,
    pub size: u32,
    pub config: u64,
    pub sample: perf_event_attr_sample_t,
    pub sample_type: u64,
    pub read_format: u64,
    pub disabled: u8,
    pub inherit: u8,
    pub pinned: u8,
    pub exclusive: u8,
    pub exclude_user: u8,
    pub exclude_kernel: u8,
    pub exclude_hv: u8,
    pub exclude_idle: u8,
    pub mmap: u8,
    pub comm: u8,
    pub freq: u8,
    pub inherit_stat: u8,
    pub enable_on_exec: u8,
    pub task: u8,
    pub watermark: u8,
    pub precise_ip: u8,
    pub mmap_data: u8,
    pub sample_id_all: u8,
    pub exclude_host: u8,
    pub exclude_guest: u8,
    pub exclude_callchain_kernel: u8,
    pub exclude_callchain_user: u8,
    pub mmap2: u8,
    pub comm_exec: u8,
    pub use_clockid: u8,
    pub context_switch: u8,
    pub write_backward: u8,
    pub namespaces: u8,
    pub wakeup: perf_event_attr_wakeup_t,
    pub bp_type: u32,
    pub config1: perf_event_attr_config1_t,
    pub config2: perf_event_attr_config2_t,
    pub branch_sample_type: u64,
    pub sample_regs_user: u64,
    pub sample_stack_user: u32,
    pub clockid: i32,
    pub sample_regs_intr: u64,
    pub aux_watermark: u32,
    pub sample_max_stack: u16,
    /* private fields */

}
Available on crate feature dep_nc only.
Expand description

Hardware event_id to monitor via a performance monitoring event:

@sample_max_stack: Max number of frame pointers in a callchain should be < /proc/sys/kernel/perf_event_max_stack

Fields§

§type_: u32

Major type: hardware/software/tracepoint/etc.

§size: u32

Size of the attr structure, for fwd/bwd compat.

§config: u64

Type specific configuration information.

§sample: perf_event_attr_sample_t§sample_type: u64§read_format: u64§disabled: u8

off by default

§inherit: u8

children inherit it

§pinned: u8

must always be on PMU

§exclusive: u8

only group on PMU

§exclude_user: u8

don’t count user

§exclude_kernel: u8

ditto kernel

§exclude_hv: u8

ditto hypervisor

§exclude_idle: u8

don’t count when idle

§mmap: u8

include mmap data

§comm: u8

include comm data

§freq: u8

use freq, not period

§inherit_stat: u8

per task counts

§enable_on_exec: u8

next exec enables

§task: u8

trace fork/exit

§watermark: u8

wakeup_watermark

§precise_ip: u8

precise_ip: 0 - SAMPLE_IP can have arbitrary skid 1 - SAMPLE_IP must have constant skid 2 - SAMPLE_IP requested to have 0 skid 3 - SAMPLE_IP must have 0 skid

See also PERF_RECORD_MISC_EXACT_IP skid constraint

§mmap_data: u8

non-exec mmap data

§sample_id_all: u8

sample_type all events

§exclude_host: u8

don’t count in host

§exclude_guest: u8

don’t count in guest

§exclude_callchain_kernel: u8

exclude kernel callchains

§exclude_callchain_user: u8

exclude user callchains

§mmap2: u8

include mmap with inode data

§comm_exec: u8

flag comm events that are due to an exec

§use_clockid: u8

use @clockid for time fields

§context_switch: u8

context switch data

§write_backward: u8

Write ring buffer from end to beginning

§namespaces: u8

include namespaces data

§wakeup: perf_event_attr_wakeup_t§bp_type: u32§config1: perf_event_attr_config1_t§config2: perf_event_attr_config2_t§branch_sample_type: u64

enum perf_branch_sample_type

§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.

§clockid: i32§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

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