Tasklets Bottom half Scheduling
Which scheduling algorithm is followed by Bottom half ? If one Bottom half is in execution and suppose another higher priority bottom half comes in that case what will be the behavior?
Please consider above case wrt to TASKLET
Each CPU has queues for scheduled (high-priority and normal) tasklets.
When a CPU is about to return to user space from an interrupt or from a system call, it checks for scheduled tasklets, and executes them. The same checks are done again after a tasklet has finished. (If there are too many scheduled tasklets, they are not all executed at once, but moved into a kernel thread, ksoftirqd ; but the principle stays the same.)
Therefore, a tasklet will never interrupt another tasklet, but a high-priority tasklet will be executed before any scheduled 'normal' tasklets.
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