I have activated kprobes and it seems that timer tick and schedule don't get called. I have a gpio line to monitor the kprobe entry and exit handlers On Fri, Jan 27, 2017 at 2:04 PM, Andy Ng <andreas2025@xxxxxxxxx> wrote: > Thank you. However when I turn debug on the problem goes away :( > > On Thu, Jan 26, 2017 at 4:57 PM, Sebastian Andrzej Siewior > <bigeasy@xxxxxxxxxxxxx> wrote: >> On 2017-01-25 13:54:15 [+0000], Andy Ng wrote: >>> Dear List, >>> >>> I have an interesting problem on 3.0.35 with the rt56 patch on ARM. >>> >>> I have some external events that drive my ISR, which I have set it up >>> as non_threaded one. >>> When the interrupt rate is low, 1.8msec things are going fine, but >>> when the rate is higher, the wake_up call from the isr does not >>> return. The system is frozen. No Magic SysRq. Nothing. >>> >>> All will work fine once I change my ISR to be a threaded one. >>> >>> Any ideas where to search? >> >> If you you enable lockdep and sleeping-while-atomic warning you should >> see quite a few warnings. That would be a good starting point to search. >> >>> Kind regards, >>> Andy >> >> Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
