What happens if a running tasklet is interrupted by a hardware interrupt

Question

What happens if a running tasklet is interrupted by a hardware interrupt. I mean if there is a tasklet in the middle of execution and a hardware interrupt happens. Does the tasklet complete its execution before the interrupt code is run, or the tasklet is executed after the interrupt.

Answer 1

Ordinarily a hardware interrupt will be executed immediately. On return, the tasklet will resume execution.

It is possible and even common that a tasklet will disable interrupts during short critical sections while it manipulates shared data structures.

Answer 2

Taskelts can be interrupted by hardware interrupts. See, eg this .