i have replaced wake_up call with wake_up_locked ... and it seems better. On Fri, Jan 27, 2017 at 2:09 PM, Andy Ng <andreas2025@xxxxxxxxx> wrote: > 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
