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First Interview
1. Self-introduction
2. What kind of locks are used in interrupts?
3. What is the difference between spin locks and mutex locks?
4. If the interrupt function is threaded, what kind of locks should be used?
5. What are the methods for handling the bottom half of interrupts?
6. Is a tasklet in process context or interrupt context?
7. Describe the system boot process?
8. What is the most difficult problem you have encountered?
9. Are you willing to work overtime?
10. Questions for the interviewer
Second Interview
1. Self-introduction
2. Which kernel subsystem are you most familiar with?
3. Describe the slab allocator?
4. How to solve TP drift issues?
5. Do you have experience with USB drivers?
6. What is the most difficult problem you have solved?
7. What tasks are required for bring-up?
8. Do you need to handle both pre-silicon and post-silicon bring-up?
9. Do you have any practical optimization cases related to memory?
10. If I/O read/write performance is low, what could be the reasons? How would you diagnose it? What are your solutions?
11. Discuss a probabilistic crash issue and how you resolved it?
12. Besides crashes, are there other stability issues?
13. What could cause system lag? What are your thoughts on this?
14. What are your thoughts on fast boot strategies?
15. Questions for the interviewer
end
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