Hi Julio, On 01/14/2016 10:11 AM, Julio Cruz Barroso wrote: > > I changed the policy:priority as you suggested and the system is stable now!! I will prepare an application to measure the latency with some loads during long periods (but this is another thing). > > For reference, in my case (iMX6), the priority adjustment was done at spi.c (master->rt). A patch was suggested to implement this by device tree but other opinion said that this sound like a Linux specific feature/implementation [4]. Anyways, this is another issue. > Just curios, is it possible for you to achieve the same results from User space using chrt/taskset utils? (without Kernel modification). For example, I can see below processes on my system: 184 root 0 SW [spi32766] and our QSPI driver don't use IRQs. > [4] Patch to implement SPI RT in device tree: http://www.spinics.net/lists/arm-kernel/msg348713.html > -- regards, -grygorii -- 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
