2 ms·

"Current kernels have four different modes that regulate when one task can be preempted in favor of another" Is this about kernel tasks, user tasks or both?

• GrayShade 2y ago
  Kernel code, user-space code is always preemptible.
  • fguerraz 2y ago
    Not true when the user-space thread has RT priority.
    • temac 2y ago
      RT threads can be prempted by higher prio RT, and IIRC some kernel threads run at the highest prio. Plus you can be prempted by SMI, an hypervisor, etc
• deleted 2y ago
  [deleted]