Hi
I work with MCSDK, OMAPL-138. I had a problem about memory map. Because when I run V4L2 video capture program, I got error and stop. The log is:
start_video: page allocation failure: order:10, mode:0xd0
Backtrace:
[<c000c580>] (dump_backtrace+0x0/0x114) from [<c038d080>] (dump_stack+0x18/0x1c)
r7:00000000 r6:0000000a r5:000000d0 r4:00000001
[<c038d068>] (dump_stack+0x0/0x1c) from [<c0061640>] (warn_alloc_failed+0xf8/0x11c)
[<c0061548>] (warn_alloc_failed+0x0/0x11c) from [<c0061bb0>] (__alloc_pages_nodemask+0x54c/0x590)
r3:00000000 r2:00000000
r7:00000040 r6:0000002a r5:000000d0 r4:00000000
[<c0061664>] (__alloc_pages_nodemask+0x0/0x590) from [<c000e030>] (__dma_alloc+0xec/0x2fc)
[<c000df44>] (__dma_alloc+0x0/0x2fc) from [<c000e2d0>] (dma_alloc_coherent+0x5c/0x68)
[<c000e274>] (dma_alloc_coherent+0x0/0x68) from [<c02a211c>] (__videobuf_mmap_mapper+0xac/0x188)
r7:c1967190 r6:c0c43480 r5:c1b368f0 r4:c0c434e4
[<c02a2070>] (__videobuf_mmap_mapper+0x0/0x188) from [<c029fdf4>] (videobuf_mmap_mapper+0xd4/0x114)
r8:b678d000 r7:c0c43980 r6:c1b368f0 r5:c1967190 r4:c1b368f0
[<c029fd20>] (videobuf_mmap_mapper+0x0/0x114) from [<c02aa3ac>] (vpif_mmap+0x40/0x50)
r5:c1b368f0 r4:c1967000
[<c02aa36c>] (vpif_mmap+0x0/0x50) from [<c02922a0>] (v4l2_mmap+0x70/0x90)
r5:c184d800 r4:c0c43980
[<c0292230>] (v4l2_mmap+0x0/0x90) from [<c007a124>] (mmap_region+0x25c/0x494)
r7:c0c43980 r6:000000ff r5:c1b368f0 r4:00000000
[<c0079ec8>] (mmap_region+0x0/0x494) from [<c007a620>] (do_mmap_pgoff+0x2c4/0x324)
[<c007a35c>] (do_mmap_pgoff+0x0/0x324) from [<c007a720>] (sys_mmap_pgoff+0xa0/0xd0)
[<c007a680>] (sys_mmap_pgoff+0x0/0xd0) from [<c0009440>] (ret_fast_syscall+0x0/0x2c)
Mem-info:
DMA per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
active_anon:496 inactive_anon:12 isolated_anon:0
active_file:3 inactive_file:66 isolated_file:0
unevictable:0 dirty:0 writeback:12 unstable:0
free:4073 slab_reclaimable:206 slab_unreclaimable:467
mapped:22 shmem:21 pagetables:70 bounce:0
DMA free:16296kB min:720kB low:900kB high:1080kB active_anon:1984kB inactive_anon:48kB active_file:12kB inactive_file:264kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:32512kB mlocked:0kB dirty:0kB writeback:48kB mapped:88kB shmem:84kB slab_reclaimable:820kB slab_unreclaimable:1868kB kernel_stack:312kB pagetables:280kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
DMA: 254*4kB 192*8kB 109*16kB 59*32kB 36*64kB 7*128kB 7*256kB 2*512kB 4*1024kB 0*2048kB 0*4096kB = 16296kB
90 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
8192 pages of RAM
4155 free pages
1365 reserved pages
580 slab pages
261 pages shared
0 pages swap cached
vpif_capture vpif_capture: dma_alloc_coherent size 4149248 failed
mmap error 12, Cannot allocate memory
Who can help me to config memory? Thanks.
