Round 1:
- Whole suspend process: Interaction between user space and kernel space, what values are modified, how to handle wrong values, which API is called, suspend states, bottom current issues
- CPU Idle c states
- CPU DVFS working, how DVFS decides about Freq and voltage, how the system increases the Freq
- Idle states supported, when which state will go, who puts in idle state, how power is saved in such scenario
- I/O question of pointer
- Extract k bits from a given number in a given range
Puzzle:
Round 2:
- Suspend process explain: questions related to it
- CPU hotplug
- Arm V8 architecture
- Interrupts and types of interrupts
- Microcontroller and SoC
- SMC call vs PSCI call
- 2 i/o questions of call by value and call by reference
- Tasklet, Workqueue
- Types of locks used
- Kernel panic vs oops
- How i2c driver will handle suspend the process
- User space and kernel space interaction
- How to port on latest kernel knowing that some codes is already present in mainline
- LDO vs BUCK
- Softirq, Bottom Halve
- Topological sorting
- Write Fibonacci using recursion and DP
- Reverse LL using recursion and normal
- DFS BFS
- Null vs void vs Wild pointer
- Hypervisor
- Arguments provided in SMC calls, how this is interpreted in secure world
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