Enum nc::types::perf_event_read_format_t

#[repr(u8)]
pub enum perf_event_read_format_t {
    PERF_FORMAT_TOTAL_TIME_ENABLED,
    PERF_FORMAT_TOTAL_TIME_RUNNING,
    PERF_FORMAT_ID,
    PERF_FORMAT_GROUP,
    PERF_FORMAT_MAX,
}

The format of the data returned by read() on a perf event fd as specified by attr.read_format:

struct read_format {
  { u64 value;
    { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
    { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
    { u64 id; } && PERF_FORMAT_ID
  } && !PERF_FORMAT_GROUP

  { u64 nr;
    { u64 time_enabled; } && PERF_FORMAT_TOTAL_TIME_ENABLED
    { u64 time_running; } && PERF_FORMAT_TOTAL_TIME_RUNNING
    { u64 value;
      { u64 id; } && PERF_FORMAT_ID
    } cntr[nr];
  } && PERF_FORMAT_GROUP
};

Variants

PERF_FORMAT_TOTAL_TIME_ENABLED

PERF_FORMAT_TOTAL_TIME_RUNNING

PERF_FORMAT_ID

PERF_FORMAT_GROUP

PERF_FORMAT_MAX

non-ABI