how Intel® VTune™ Profiler counts counter value and samples information about a given process.

Dear all，

As we know, each core has private registers(general and fixed counter), when the process switches to another CPU, we need to re-enable counter above the current CPU.
In Linux code, the context switch does this. However, in vtune driver(sepdk), I don’t have seen anything like this, so I was wondering how vtune driver did it.

If anyone knows, please help to explain it~

Thanks

cody