Hi, Recently when I updated my driver to 3.5 from 3.3, I am observing that my driver is failing for dma_alloc_coherent, when I traced it, I see lots of changes for MM in 3.5 release any Ideas why this could be happening? Here is the case my driver works fine for 7 runs of the application for 8th time it crashes for MMAP buffers below is the crash log.
Thx, --Prabhakar Lad vpif_mmap_loopb: page allocation failure: order:10, mode:0xd0 Backtrace: [<c000c608>] (dump_backtrace+0x0/0x114) from [<c033cfc0>] (dump_stack+0x18/0x1c) r6:00000000 r5:000000d0 r4:00000001 r3:c048a060 [<c033cfa8>] (dump_stack+0x0/0x1c) from [<c0061c00>] (warn_alloc_failed+0xf4/0x118) [<c0061b0c>] (warn_alloc_failed+0x0/0x118) from [<c00627f4>] (__alloc_pages_nodemask+0x544/0x590) r3:c2cfbb64 r2:00000000 r7:c04b2f94 r6:c2cfa000 r5:0000000a r4:000000d0 [<c00622b0>] (__alloc_pages_nodemask+0x0/0x590) from [<c000e084>] (arm_dma_alloc+0x138/0x358) [<c000df4c>] (arm_dma_alloc+0x0/0x358) from [<c024ca94>] (vb2_dma_contig_alloc+0x78/0xfc) [<c024ca1c>] (vb2_dma_contig_alloc+0x0/0xfc) from [<c024a6cc>] (__vb2_queue_alloc+0xd4/0x338) r6:c36d5400 r5:00000000 r4:c361a190 [<c024a5f8>] (__vb2_queue_alloc+0x0/0x338) from [<c024adfc>] (vb2_reqbufs+0x22c/0x308) [<c024abd0>] (vb2_reqbufs+0x0/0x308) from [<c025399c>] (vpif_reqbufs+0x114/0x148) r7:00000001 r6:c2cfbe20 r5:c361a000 r4:c2d09400 [<c0253888>] (vpif_reqbufs+0x0/0x148) from [<c023a470>] (__video_do_ioctl+0x1a14/0x4914) r8:c0145608 r7:c03601e8 r6:00000000 r5:c3563000 r4:c2cfbe20 r3:00000000 [<c0238a5c>] (__video_do_ioctl+0x0/0x4914) from [<c0238890>] (video_usercopy+0x368/0x4b4) [<c0238528>] (video_usercopy+0x0/0x4b4) from [<c02389f0>] (video_ioctl2+0x14/0x1c) [<c02389dc>] (video_ioctl2+0x0/0x1c) from [<c02367e8>] (v4l2_ioctl+0xac/0x158) [<c023673c>] (v4l2_ioctl+0x0/0x158) from [<c009e67c>] (vfs_ioctl+0x28/0x40) r8:c00095a4 r7:00000003 r6:c37992b0 r5:c2c77e80 r4:bed27a24 r3:c023673c [<c009e654>] (vfs_ioctl+0x0/0x40) from [<c009edd8>] (do_vfs_ioctl+0x52c/0x588) [<c009e8ac>] (do_vfs_ioctl+0x0/0x588) from [<c009ee74>] (sys_ioctl+0x40/0x64) r9:c2cfa000 r8:c00095a4 r7:00000003 r6:c0145608 r5:bed27a24 r4:c2c77e80 [<c009ee34>] (sys_ioctl+0x0/0x64) from [<c0009420>] (ret_fast_syscall+0x0/0x2c) r7:00000036 r6:00008710 r5:00000000 r4:0000b308 Mem-info: DMA per-cpu: CPU 0: hi: 18, btch: 3 usd: 3 active_anon:315 inactive_anon:18 isolated_anon:0 active_file:3 inactive_file:112 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 free:12196 slab_reclaimable:236 slab_unreclaimable:569 mapped:31 shmem:22 pagetables:34 bounce:0 DMA free:48712kB min:984kB low:1228kB high:1476kB active_anon:1260kB inactive_anon:72kB active_file:12kB inactive_file:560kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:609o lowmem_reserve[]: 0 0 0 DMA: 69*4kB 108*8kB 115*16kB 53*32kB 44*64kB 19*128kB 13*256kB 9*512kB 8*1024kB 11*2048kB 0*4096kB = 48580kB 217 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 15360 pages of RAM 12199 free pages 1335 reserved pages 669 slab pages 155 pages shared 0 pages swap cached vpif_capture vpif_capture: dma_alloc_coherent of size 2622464 failed cannot allocate memory : Cannot allocate memory -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
