[meta-freescale] Wandboard Quad experience (good!)

Mon Jul 15 13:27:59 PDT 2013

Hi John,

This (2nd crash) still happens when CONFIG_SWAP is not set, but it's just possible that the Vivante one has gone! I've had a board running my app. for over 6 hours hours and the problem hasn't shown yet. I'll keep it running...

However, I now see lots of:

[ 1481.696860] Not power off before vpu open!

Any idea what these are about?

I've also noticed that the Wandboard is very sensitive to power quality. The specs say a 5v, 2A PSU is suitable - but it's not if it's got a very fast current limit :-) I get reboots (uboot reports 'POR' reset cause) if I use a lab PSU set to 2A.

On 14 Jul 2013, at 20:38, John Weber wrote:

> Hi Chris,
> 
> Thanks.  You've probably noticed, but this is a different error from the first one you sent.  The first one was in the Vivante driver.
> 
> This one seems related to a memory limitation and perhaps related to the CONFIG_SWAP being on by default in the kernel build.  Since there is no swap partition, having CONFIG_SWAP seems a little useless.  Oddly enough, all of the default i.MX6 defconfigs set CONFIG_SWAP.  I'm seeing if we can remove that option.
> 
> John
> 
> On 7/13/13 4:26 PM, Chris Tapp wrote:
>> Hi John,
>> 
>> On 13 Jul 2013, at 01:07, John Weber wrote:
>> 
>>> Chris,
>>> 
>>> This looks like it is coming from the Vivante GPU driver in:
>>> drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c, line 1315.
>>> 
>>> How would I replicate this problem?
>> 
>> Good question! Simply running (with GST_DEBUG="*:2")
>> 
>> gst-launch playbin2 uri=http://media.w3.org/2010/05/sintel/trailer.webm video-sink="queue2 ! mfw_v4lsink"
>> 
>> sometimes gives this:
>> 
>> [ 2445.396718] source:src: page allocation failure: order:11, mode:0xd1
>> [ 2445.403170] Backtrace:
>> [ 2445.405710] [<c003e358>] (dump_backtrace+0x0/0x104) from [<c0421760>] (dump_stack+0x18/0x1c)
>> [ 2445.414222]  r6:e9b80000 r5:000000d1 r4:00000001 r3:00000000
>> [ 2445.420029] [<c0421748>] (dump_stack+0x0/0x1c) from [<c00b7be8>] (warn_alloc_failed+0xe4/0x104)
>> [ 2445.428825] [<c00b7b04>] (warn_alloc_failed+0x0/0x104) from [<c00ba12c>] (__alloc_pages_nodemask+0x5b8/0x634)
>> [ 2445.438806]  r3:00000000 r2:00000000
>> [ 2445.442482]  r8:00000000 r7:00000000 r6:e9b80000 r5:0000000b r4:000000d1
>> [ 2445.449342] [<c00b9b74>] (__alloc_pages_nodemask+0x0/0x634) from [<c004400c>] (__dma_alloc+0xc4/0x2b0)
>> [ 2445.458728] [<c0043f48>] (__dma_alloc+0x0/0x2b0) from [<c0044550>] (dma_alloc_coherent+0x5c/0x68)
>> [ 2445.467695] [<c00444f4>] (dma_alloc_coherent+0x0/0x68) from [<c02f693c>] (vpu_alloc_dma_buffer+0x34/0x5c)
>> [ 2445.477323]  r7:e9b80000 r6:e9cb6f28 r5:e9cb6f20 r4:e9cb6f28
>> [ 2445.483422] [<c02f6908>] (vpu_alloc_dma_buffer+0x0/0x5c) from [<c02f6a38>] (vpu_ioctl+0xd4/0x7ac)
>> [ 2445.492366]  r4:41efe940 r3:00000000
>> [ 2445.496042] [<c02f6964>] (vpu_ioctl+0x0/0x7ac) from [<c00f144c>] (vfs_ioctl+0x28/0x44)
>> [ 2445.504025]  r8:e9b468d0 r7:00000007 r6:00005600 r5:e9b667a0 r4:e9b667a0
>> [ 2445.510888] [<c00f1424>] (vfs_ioctl+0x0/0x44) from [<c00f1e78>] (do_vfs_ioctl+0x414/0x508)
>> [ 2445.519167] [<c00f1a64>] (do_vfs_ioctl+0x0/0x508) from [<c00f1fa8>] (sys_ioctl+0x3c/0x68)
>> [ 2445.527381] [<c00f1f6c>] (sys_ioctl+0x0/0x68) from [<c003ac00>] (ret_fast_syscall+0x0/0x30)
>> [ 2445.535753]  r7:00000036 r6:415c11ac r5:420762a8 r4:41efe940
>> [ 2445.541491] Mem-info:
>> [ 2445.543770] DMA per-cpu:
>> [ 2445.546309] CPU    0: hi:   90, btch:  15 usd:  84
>> [ 2445.551119] CPU    1: hi:   90, btch:  15 usd:  84
>> [ 2445.555918] CPU    2: hi:   90, btch:  15 usd:   0
>> [ 2445.560733] CPU    3: hi:   90, btch:  15 usd:  98
>> [ 2445.565529] Normal per-cpu:
>> [ 2445.568330] CPU    0: hi:   90, btch:  15 usd:  80
>> [ 2445.573146] CPU    1: hi:   90, btch:  15 usd:  66
>> [ 2445.577944] CPU    2: hi:   90, btch:  15 usd:  77
>> [ 2445.582757] CPU    3: hi:   90, btch:  15 usd:  19
>> [ 2445.587553] HighMem per-cpu:
>> [ 2445.590455] CPU    0: hi:  186, btch:  31 usd:  16
>> [ 2445.595254] CPU    1: hi:  186, btch:  31 usd:  37
>> [ 2445.600052] CPU    2: hi:  186, btch:  31 usd: 172
>> [ 2445.604863] CPU    3: hi:  186, btch:  31 usd: 181
>> [ 2445.609675] active_anon:1321 inactive_anon:19 isolated_anon:0
>> [ 2445.609680]  active_file:2311 inactive_file:2276 isolated_file:0
>> [ 2445.609686]  unevictable:0 dirty:1 writeback:0 unstable:0
>> [ 2445.609690]  free:456985 slab_reclaimable:305 slab_unreclaimable:1705
>> [ 2445.609696]  mapped:1837 shmem:43 pagetables:153 bounce:0
>> [ 2445.638709] DMA free:48392kB min:1052kB low:1312kB high:1576kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:186944kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
>> [ 2445.675225] lowmem_reserve[]: 0 308 1673 1673
>> [ 2445.679676] Normal free:392244kB min:1776kB low:2220kB high:2664kB active_anon:0kB inactive_anon:0kB active_file:2036kB inactive_file:1676kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:315584kB mlocked:0kB dirty:4kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:1220kB slab_unreclaimable:6820kB kernel_stack:656kB pagetables:612kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
>> [ 2445.717837] lowmem_reserve[]: 0 0 10922 10922
>> [ 2445.722299] HighMem free:1387304kB min:512kB low:2480kB high:4448kB active_anon:5284kB inactive_anon:76kB active_file:7208kB inactive_file:7428kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1398016kB mlocked:0kB dirty:0kB writeback:0kB mapped:7348kB shmem:172kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
>> [ 2445.760550] lowmem_reserve[]: 0 0 0 0
>> [ 2445.764287] DMA: 10*4kB 12*8kB 14*16kB 13*32kB 12*64kB 12*128kB 7*256kB 3*512kB 5*1024kB 6*2048kB 6*4096kB 0*8192kB 0*16384kB 0*32768kB = 48392kB
>> [ 2445.777566] Normal: 99*4kB 71*8kB 41*16kB 9*32kB 5*64kB 3*128kB 2*256kB 2*512kB 1*1024kB 1*2048kB 2*4096kB 4*8192kB 3*16384kB 9*32768kB = 392244kB
>> [ 2445.790945] HighMem: 400*4kB 205*8kB 114*16kB 131*32kB 62*64kB 29*128kB 13*256kB 2*512kB 4*1024kB 1*2048kB 2*4096kB 1*8192kB 2*16384kB 40*32768kB = 1387304kB
>> [ 2445.805269] 4614 total pagecache pages
>> [ 2445.809023] 0 pages in swap cache
>> [ 2445.812355] Swap cache stats: add 0, delete 0, find 0/0
>> [ 2445.817586] Free swap  = 0kB
>> [ 2445.820483] Total swap = 0kB
>> [ 2445.870417] 524288 pages of RAM
>> [ 2445.873566] 458040 free pages
>> [ 2445.876537] 50744 reserved pages
>> [ 2445.879767] 2012 slab pages
>> [ 2445.882584] 5157 pages shared
>> [ 2445.885557] 0 pages swap cached
>> [ 2445.888705] Physical memory allocation error!
>> [ 2445.893083] Physical memory allocation error!
>> 
>> I'll have a go at getting the other one to show...
>> 
>> Chris Tapp
>> 
>> opensource at keylevel.com
>> www.keylevel.com
>> 
>> 
>> 

Chris Tapp

opensource at keylevel.com
www.keylevel.com