On 04. 08. 25, 11:35, Wladislav Wiebe wrote:
Introduce a mechanism to detect and warn about prolonged IRQ handlers. With a new command-line parameter (irqhandler.duration_warn_us=), users can configure the duration threshold in microseconds when a warning in such format should be emitted: "[CPU14] long duration of IRQ[159:bad_irq_handler [long_irq]], took: 1330 us" The implementation uses local_clock() to measure the execution duration of the generic IRQ per-CPU event handler.
Reviewed-by: Jiri Slaby <jirislaby@xxxxxxxxxx> -- js suse labs
