Hi, On Thu, May 14, 2015 at 08:14:57PM +1000, Benjamin Herrenschmidt wrote: > On Thu, 2015-05-14 at 13:06 +0300, Aaro Koskinen wrote: > > On Wed, May 13, 2015 at 06:39:40AM +1000, Benjamin Herrenschmidt wrote: > > > On Tue, 2015-05-12 at 20:55 +0300, Aaro Koskinen wrote: > > > > I'm running with HZ=100 so the values are still probably within > > > > jiffy resolution, so perhaps the calculation should first do > > > > idle = min(idle, total)? > > > > > > Does it gives you a reasonable output if you do that ? > > > > The below change fixes the idle system blinking behaviour. > > > > I'm also able to reproduce the leds going off during full CPU load case. > > It seems there is some DMA error. Normally, reading rm->dma_regs->status > > in the IRQ handler gives 0x8400. In the failure cases I've seen values > > 0x8880 and 0x8980 - the IRQ will stop after this and it will need > > paused -> started cycle before it gets going again (but sometimes fails > > again soon after). > > That's a bit worrysome, is that new ? Smells like faulting HW ...
Ok, right... I swapped the PSU and HD into a different box, and now it seems to work as expected! (At least the first hour into GCC bootstrap is still going fine...) A. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
