Re: system freeze - beaglebone black xenomai - gpio interrupts driver
Hi, On Sat, Feb 8, 2020 at 6:56 AM Laurentiu-Cristian Duca < laurentiu.d...@gmail.com> wrote: > Hello there > > Greg, any news? > > Thanks > Still working on it, I’ve only had a couple hours this week to work on it. I’m debugging the irq storm that happens after we trigger the gpio interrupt. I plan on spending some time this weekend on it. Greg > > On 1/31/20, Greg Gallagher wrote: > > Hey, > > > > On Wed, Jan 29, 2020 at 11:58 AM Greg Gallagher > > wrote: > >> > >> Hey, > >> > >> On Wed, Jan 29, 2020 at 12:07 AM Greg Gallagher > >> wrote: > >> > > >> > Hi, > >> > > >> > On Tue, Jan 28, 2020 at 7:37 AM Laurentiu-Cristian Duca > >> > wrote: > >> > > > >> > > Again, to make things clear: > >> > > I have tested two modules: one with RTDM gpio-interrupts and one > with > >> > > classic linux interrupts. > >> > > The one with RTDM gpio-interrupts: > >> > > - makes kernel freeze on 4.14.71 and 4.19.82 ipipe-enabled kernels > >> > > - works (but with ipipe warnings when interrupt arrives) in 4.4.71 > and > >> > > 4.9.51 > >> > > The one with classic linux interrupts: > >> > > - works in PREEMPT_RT linux (tested on 5.4.5 and 4.19.59 PREEMPT_RT > >> > > non-ipipe non-xenomai) > >> > > - makes kernel freeze when interrupt arrives on 4.14.71 and 4.19.82 > >> > > for xenomai ipipe enabled kernels > >> > > > >> > > On 1/28/20, Laurentiu-Cristian Duca > wrote: > >> > > > This does not happen with non-ipipe enabled kernels. > >> > > > I have tested a classic gpio-interrupt module on PREEMPT_RT and it > >> > > > works, > >> > > > but when I tested it on an ipipe-enabled kernel (4.14.71 and > >> > > > 4.19.82) > >> > > > got kernel freeze. > >> > > > > >> > > > On 1/28/20, Greg Gallagher wrote: > >> > > >> On Tue, Jan 28, 2020 at 7:11 AM Laurentiu-Cristian Duca < > >> > > >> laurentiu.d...@gmail.com> wrote: > >> > > >> > >> > > >>> I forgot to say that I've tested 4.14.71 with xenomai 3.0.9 > >> > > >>> > >> > > >>> On 1/28/20, Laurentiu-Cristian Duca > >> > > >>> wrote: > >> > > >>> > Hello Jan and friends, > >> > > >>> > > >> > > >>> > The situation is the following for bbb: > >> > > >>> > - 4.14.71 and 4.19.82 xenomai-3 master enabled kernels > >> > > >>> > freeze when trying to use gpio-interrupts; > >> > > >>> > when interrupt comes the gpioout is toggled but the system > >> > > >>> > do not respond anymore to keyboard and nothing more is shown > on > >> > > >>> > the > >> > > >>> screen > >> > > >>> > - note that even if I try a classic (linux only, non-xenomai) > >> > > >> > >> > > >> This happens even with non-ipipe enables kernels? > >> > > > > >> > > >> > >> > > >> > >> > > >>> > gpio interrupt handler in 4.19.82 with xenomai-3 > >> > > >>> > the system freeze when interrupt comes > >> > > >>> > - 4.9.51 and 4.4.71 xenomai 3.0.5 enabled kernels work > >> > > >>> > blinking gpioout and do not block, > >> > > >>> > but both show warnings when interrupt comes > >> > > >>> > which significantly increase interrupt latency. > >> > > >>> > > >> > > >>> > > >> > > >>> > On 1/28/20, Jan Kiszka wrote: > >> > > >>> >> On 24.01.20 07:24, Greg Gallagher via Xenomai wrote: > >> > > >>> >>> I sent a patch offline, if you could try it that would be > >> > > >>> >>> great. > >> > > >>> >>> I'm > >> > > >>> >>> having issues getting my board set up. > >> > > >>> >>> > >> > > >>> >> > >> > > >>> >> Do we know by now if this is an I-pipe issue or rather > >> > > >>> >> something > >> > > >>> >> cobalt-related? > >> > > >>> >> > >> > > >>> >> Jan > >> > > >>> >> > >> > > >>> >>> On Thu, Jan 23, 2020 at 1:13 PM Greg Gallagher > >> > > >>> >>> > >> > > >>> >>> wrote: > >> > > >>> > >> > > >>> Hi, > >> > > >>> > >> > > >>> On Thu, Jan 23, 2020 at 12:15 PM Laurentiu-Cristian Duca > >> > > >>> wrote: > >> > > >>> > > >> > > >>> > Hi, the interrupt comes one per second in my test, so > there > >> > > >>> > is no > >> > > >>> > flood. > >> > > >>> > In 4.19 the system it blinks the gpioout but it does not > >> > > >>> > respond > >> > > >>> > to > >> > > >>> > keyboard and does not show anything more on the screen. > >> > > >>> > >> > > >>> Okay, there's a couple things that are different between > 4.4 > >> > > >>> and > >> > > >>> 4.19 > >> > > >>> that I'm looking into, which is taking me a little long > then > >> > > >>> I > >> > > >>> thought. I won't have this patch ready till tomorrow > >> > > >>> morning. I > >> > > >>> finally have beaglebone black hardware, I'll make sure the > >> > > >>> kernel > >> > > >>> boots and then send the patch to you for testing. > >> > > >>> > >> > > >>> -Greg > >> > > >>> > >> > > >>> > >> > > >>> > > >> > > >>> > On Thu, Jan 23, 2020, 19:03 Greg Gallagher > >> > > >>> > > >> > > >>> > wrote: > >> > > >>> >> > >> > > >>> >> Hi, > >> > > >>> >> > >> > > >>> >> On Thu, Jan 23, 2020 at 9:21 AM Laurentiu-Cristian Duca > >>
Re: system freeze - beaglebone black xenomai - gpio interrupts driver
Hello there Greg, any news? Thanks On 1/31/20, Greg Gallagher wrote: > Hey, > > On Wed, Jan 29, 2020 at 11:58 AM Greg Gallagher > wrote: >> >> Hey, >> >> On Wed, Jan 29, 2020 at 12:07 AM Greg Gallagher >> wrote: >> > >> > Hi, >> > >> > On Tue, Jan 28, 2020 at 7:37 AM Laurentiu-Cristian Duca >> > wrote: >> > > >> > > Again, to make things clear: >> > > I have tested two modules: one with RTDM gpio-interrupts and one with >> > > classic linux interrupts. >> > > The one with RTDM gpio-interrupts: >> > > - makes kernel freeze on 4.14.71 and 4.19.82 ipipe-enabled kernels >> > > - works (but with ipipe warnings when interrupt arrives) in 4.4.71 and >> > > 4.9.51 >> > > The one with classic linux interrupts: >> > > - works in PREEMPT_RT linux (tested on 5.4.5 and 4.19.59 PREEMPT_RT >> > > non-ipipe non-xenomai) >> > > - makes kernel freeze when interrupt arrives on 4.14.71 and 4.19.82 >> > > for xenomai ipipe enabled kernels >> > > >> > > On 1/28/20, Laurentiu-Cristian Duca wrote: >> > > > This does not happen with non-ipipe enabled kernels. >> > > > I have tested a classic gpio-interrupt module on PREEMPT_RT and it >> > > > works, >> > > > but when I tested it on an ipipe-enabled kernel (4.14.71 and >> > > > 4.19.82) >> > > > got kernel freeze. >> > > > >> > > > On 1/28/20, Greg Gallagher wrote: >> > > >> On Tue, Jan 28, 2020 at 7:11 AM Laurentiu-Cristian Duca < >> > > >> laurentiu.d...@gmail.com> wrote: >> > > >> >> > > >>> I forgot to say that I've tested 4.14.71 with xenomai 3.0.9 >> > > >>> >> > > >>> On 1/28/20, Laurentiu-Cristian Duca >> > > >>> wrote: >> > > >>> > Hello Jan and friends, >> > > >>> > >> > > >>> > The situation is the following for bbb: >> > > >>> > - 4.14.71 and 4.19.82 xenomai-3 master enabled kernels >> > > >>> > freeze when trying to use gpio-interrupts; >> > > >>> > when interrupt comes the gpioout is toggled but the system >> > > >>> > do not respond anymore to keyboard and nothing more is shown on >> > > >>> > the >> > > >>> screen >> > > >>> > - note that even if I try a classic (linux only, non-xenomai) >> > > >> >> > > >> This happens even with non-ipipe enables kernels? >> > > > >> > > >> >> > > >> >> > > >>> > gpio interrupt handler in 4.19.82 with xenomai-3 >> > > >>> > the system freeze when interrupt comes >> > > >>> > - 4.9.51 and 4.4.71 xenomai 3.0.5 enabled kernels work >> > > >>> > blinking gpioout and do not block, >> > > >>> > but both show warnings when interrupt comes >> > > >>> > which significantly increase interrupt latency. >> > > >>> > >> > > >>> > >> > > >>> > On 1/28/20, Jan Kiszka wrote: >> > > >>> >> On 24.01.20 07:24, Greg Gallagher via Xenomai wrote: >> > > >>> >>> I sent a patch offline, if you could try it that would be >> > > >>> >>> great. >> > > >>> >>> I'm >> > > >>> >>> having issues getting my board set up. >> > > >>> >>> >> > > >>> >> >> > > >>> >> Do we know by now if this is an I-pipe issue or rather >> > > >>> >> something >> > > >>> >> cobalt-related? >> > > >>> >> >> > > >>> >> Jan >> > > >>> >> >> > > >>> >>> On Thu, Jan 23, 2020 at 1:13 PM Greg Gallagher >> > > >>> >>> >> > > >>> >>> wrote: >> > > >>> >> > > >>> Hi, >> > > >>> >> > > >>> On Thu, Jan 23, 2020 at 12:15 PM Laurentiu-Cristian Duca >> > > >>> wrote: >> > > >>> > >> > > >>> > Hi, the interrupt comes one per second in my test, so there >> > > >>> > is no >> > > >>> > flood. >> > > >>> > In 4.19 the system it blinks the gpioout but it does not >> > > >>> > respond >> > > >>> > to >> > > >>> > keyboard and does not show anything more on the screen. >> > > >>> >> > > >>> Okay, there's a couple things that are different between 4.4 >> > > >>> and >> > > >>> 4.19 >> > > >>> that I'm looking into, which is taking me a little long then >> > > >>> I >> > > >>> thought. I won't have this patch ready till tomorrow >> > > >>> morning. I >> > > >>> finally have beaglebone black hardware, I'll make sure the >> > > >>> kernel >> > > >>> boots and then send the patch to you for testing. >> > > >>> >> > > >>> -Greg >> > > >>> >> > > >>> >> > > >>> > >> > > >>> > On Thu, Jan 23, 2020, 19:03 Greg Gallagher >> > > >>> > >> > > >>> > wrote: >> > > >>> >> >> > > >>> >> Hi, >> > > >>> >> >> > > >>> >> On Thu, Jan 23, 2020 at 9:21 AM Laurentiu-Cristian Duca >> > > >>> >> via >> > > >>> >> Xenomai >> > > >>> >> wrote: >> > > >>> >>> >> > > >>> >>> Hello xenomai community, >> > > >>> >>> >> > > >>> >>> I have successfully tested in xenomai SPI with >> > > >>> >>> interrupts >> > > >>> >>> on >> > > >>> >>> bbb. >> > > >>> >>> However, on bbb, if I try to test a basic gpio interrupts >> > > >>> >>> driver, >> > > >>> >>> problems appear. >> > > >>> >>> Please see details below. I appreciate any idea. >> > > >>> >>> >> > > >>> >>> 1. xenomai-3 master
