mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-21 16:06:08 +01:00
23 lines
588 B
Go
23 lines
588 B
Go
// +build linux
|
|
|
|
package perf
|
|
|
|
import (
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// BPFProfiler is a Profiler that allows attaching a Berkeley
|
|
// Packet Filter (BPF) program to an existing kprobe tracepoint event.
|
|
// You need CAP_SYS_ADMIN privileges to use this interface. See:
|
|
// https://lwn.net/Articles/683504/
|
|
type BPFProfiler interface {
|
|
Profiler
|
|
AttachBPF(int) error
|
|
}
|
|
|
|
// AttachBPF is used to attach a BPF program to a profiler by using the file
|
|
// descriptor of the BPF program.
|
|
func (p *profiler) AttachBPF(fd int) error {
|
|
return unix.IoctlSetInt(p.fd, unix.PERF_EVENT_IOC_SET_BPF, fd)
|
|
}
|