Which of the following statements about kernel threads and user threads is wrong?
A. When the user thread is in a waiting state due to <br> I / O, the entire process will be switched to the waiting state by the scheduler, and other threads will not get a chance to run.
B. Kernel threads only run in kernel mode and are not affected by user mode context
C, the scheduling of user threads and kernel threads need to go through the kernel mode
D. Kernel threads are conducive to the advantages of multiprocessor concurrency, but they take up more system expenses
Answer:C
Which of the following statements about kernel threads and user threads is wrong?
A. When the user thread is in a waiting state due to <br> I / O, the entire process will be switched to the waiting state by the scheduler, and other threads will not get a chance to run. B. Kernel threads only run in kernel mode and are not affected by user mode context C, the scheduling of user threads and kernel threads need to go through the kernel mode D. Kernel threads are conducive to the advantages of multiprocessor concurrency, but they take up more system expenses