Hi Valdis, Understood. >> I though preemptible only means that a process can only be preempted >> (not moved to another core) under following situations: >> 1) An interrupt happens (In case of timer, it could put the process back in queue if its time slice expired). >Actually, in case of any interrupt, be it timer or I/O or NMI or whatever. So, essentially a scheduler can kick in while returning from ANY sort of interrupt (and not just timer interrupt), right? Thanks, Rajat _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies