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