Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-11-03 Thread Peter Hurley
On 10/28/2014 12:57 PM, Michal Nazarewicz wrote: >> On 10/28/2014 08:38 AM, Michal Nazarewicz wrote: >>> Like Laura wrote, the message is not (should not be) a problem in >>> itself: >> >> [...] >> >>> So as you can see cma_alloc will try another part of the cma region if >>> test_pages_isolated fa

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-28 Thread Laurent Pinchart
Hello, On Tuesday 28 October 2014 09:48:26 Peter Hurley wrote: > [ +cc Andrew Morton ] > > On 10/28/2014 08:38 AM, Michal Nazarewicz wrote: > > On Sun, Oct 26 2014, Laurent Pinchart wrote: > >> Hello, > >> > >> I've run into a CMA-related issue while testing a DMA engine driver with > >> dmatest

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-28 Thread Michal Nazarewicz
> On 10/28/2014 08:38 AM, Michal Nazarewicz wrote: >> Like Laura wrote, the message is not (should not be) a problem in >> itself: > > [...] > >> So as you can see cma_alloc will try another part of the cma region if >> test_pages_isolated fails. >> >> Obviously, if CMA region is fragmented or the

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-28 Thread Laurent Pinchart
Hi Laura, On Monday 27 October 2014 13:38:19 Laura Abbott wrote: > On 10/26/2014 2:09 PM, Laurent Pinchart wrote: > > Hello, > > > > I've run into a CMA-related issue while testing a DMA engine driver with > > dmatest on a Renesas R-Car ARM platform. > > > > When allocating contiguous memory thr

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-28 Thread Peter Hurley
[ +cc Andrew Morton ] On 10/28/2014 08:38 AM, Michal Nazarewicz wrote: > On Sun, Oct 26 2014, Laurent Pinchart > wrote: >> Hello, >> >> I've run into a CMA-related issue while testing a DMA engine driver with >> dmatest on a Renesas R-Car ARM platform. >> >> When allocating contiguous memory t

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-28 Thread Michal Nazarewicz
On Sun, Oct 26 2014, Laurent Pinchart wrote: > Hello, > > I've run into a CMA-related issue while testing a DMA engine driver with > dmatest on a Renesas R-Car ARM platform. > > When allocating contiguous memory through CMA the kernel prints the following > messages to the kernel log. > > [ 9

Re: CMA: test_pages_isolated failures in alloc_contig_range

2014-10-27 Thread Laura Abbott
On 10/26/2014 2:09 PM, Laurent Pinchart wrote: Hello, I've run into a CMA-related issue while testing a DMA engine driver with dmatest on a Renesas R-Car ARM platform. When allocating contiguous memory through CMA the kernel prints the following messages to the kernel log. [ 99.77] alloc