On 30.07.21 18:02, Rajesh Venkataraman via Xenomai wrote: > Hello, > We are trying to move our embedded real time application from RTOS to > Linux. So we first ported our RTOS application to a RT-Linux. In RT-Linux > we have cpu isolation and run our main realtime interrupt as a pthread > with highest priority on the isolated core. Rest of the application on > other cores. We are observing that the execution time(Interrupt Service > Routine duration) of the realtime interrupt is longer than running on a > traditional RTOS. So we are trying to put just this real time interrupt > service routine thread into Xenomai. In the RT linux Application we have > set the scheduling policy for a number of threads to SCHED_FIFO(Including > the Realtime Interrupt Service thread). Is it possible to run just the > realtime interrupt service routine thread under Xenomai and run the other > SCHED_FIFO thread under linux? or do we lose the Linux SCHED_FIFO once we > include Xenomai? >
Nope, you can always call __STD(pthread_create) etc. if you want to get the normal Linux service. But keep in mind that you will need Xenomai threads in order to synchronize with you interrupt thread via sleeping lock (e.g. pthread-mutexes). If you want to avoid such dependency, you will have to use lock-less synchronization for shared data. Jan -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux
