Windows 驱动中，统计某个函数的执行时间

VOID calFuncTime()
{
    LARGE_INTEGER Frequency;
    LARGE_INTEGER StartTime;
    LARGE_INTEGER EndTime;
    ULONGLONG elapsedTicks;
    ULONGLONG elapsedMicroseconds;
    
    StartTime = KeQueryPerformanceCounter(&Frequency);

    // 调用目标函数

    EndTime = KeQueryPerformanceCounter(NULL);
    elapsedTicks = EndTime.QuadPart - StartTime.QuadPart;
    elapsedMicroseconds = (elapsedTicks * 1000000ULL) / Frequency.QuadPart;
    DbgPrint("execution time: %llu μs (Frequency: %lld Hz)\n", elapsedMicroseconds, Frequency.QuadPart);
}