A timer has been added into my system, and it is used to generate continuous interrupt every 1 ms.
This hw is register by request_irq(19, handler_1ms) Howeve I found that , it is longer than 1 ms between two interrupts, for I used get_cycles everytime we entered do_irq : if(irq==19) { delta = get_cycle()-old; } but to find that delta is always larger than cpu cycles between 1ms. Does anyone know why this happened? regards, _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev