thanks for your post
it is a s3c2440 ARM board equipped with
Qtopia2.2 + QtEmbedded4.6.3 + Linix2.6.32.2 + arm-linux-gcc-4.4.3(EABI)
chmod -R 777 /dev , some times, randomly solve the problem (with 6 times try to opening!)
'Qtopia System Info' shows that still there is free 44MB RAM + 13MB flash
are these free memories enough good to do script job?
---------- Post updated at 04:22 PM ---------- Previous update was at 02:30 PM ----------
the system was cleaned-up, and now it has 27MB free flash memory
but still there is the proposed error.
also, this is debug info:
/////////////////////
qt-gui: page allocation failure. order:10, mode:0xd1
Backtrace:
[<c00341cc>] (dump_backtrace+0x0/0x10c) from [<c03297d0>] (dump_stack+0x18/0x1c)
r7:00000000 r6:c04a4ca4 r5:c047f3a4 r4:00000000
[<c03297b8>] (dump_stack+0x0/0x1c) from [<c0079f4c>] (__alloc_pages_nodemask+0x540/0x5a8)
[<c0079a0c>] (__alloc_pages_nodemask+0x0/0x5a8) from [<c0079fcc>] (__get_free_pages+0x18/0x44)
[<c0079fb4>] (__get_free_pages+0x0/0x44) from [<c0269b10>] (camif_open+0x138/0x274)
[<c02699d8>] (camif_open+0x0/0x274) from [<c016bd64>] (misc_open+0x158/0x208)
[<c016bc0c>] (misc_open+0x0/0x208) from [<c009dcf4>] (chrdev_open+0xd0/0x160)
r9:00000001 r8:c009dc24 r7:00000000 r6:c3831e80 r5:c3b7fc00
r4:c347a990
[<c009dc24>] (chrdev_open+0x0/0x160) from [<c0099374>] (__dentry_open+0xd4/0x26c)
r7:c393b380 r6:c3479700 r5:c347a990 r4:c3b7fc00
[<c00992a0>] (__dentry_open+0x0/0x26c) from [<c0099604>] (nameidata_to_filp+0x60/0x68)
[<c00995a4>] (nameidata_to_filp+0x0/0x68) from [<c00a6860>] (do_filp_open+0x54c/0x878)
r5:00000024 r4:00000001
[<c00a6314>] (do_filp_open+0x0/0x878) from [<c00991c8>] (do_sys_open+0x64/0xe0)
[<c0099164>] (do_sys_open+0x0/0xe0) from [<c009927c>] (sys_open+0x24/0x28)
r8:c0030088 r7:00000005 r6:4107c000 r5:000c76c0 r4:4105d000
[<c0099258>] (sys_open+0x0/0x28) from [<c002fee0>] (ret_fast_syscall+0x0/0x28)
Mem-info:
Normal per-cpu:
CPU 0: hi: 18, btch: 3 usd: 0
active_anon:1030 inactive_anon:1149 isolated_anon:0
active_file:147 inactive_file:1920 isolated_file:0
unevictable:20 dirty:0 writeback:0 unstable:0
free:6705 slab_reclaimable:164 slab_unreclaimable:384
mapped:415 shmem:92 pagetables:87 bounce:0
Normal free:26820kB min:1016kB low:1268kB high:1524kB active_anon:4120kB inactive_anon:4596kB active_file:588kB inactive_file:7680kB unevictable:80kB isolated(anon):0kB isolated(file):0kB present:65024kB mlocked:0kB dirty:0kB writeback:0kB mapped:1660kB shmem:368kB slab_reclaimable:656kB slab_unreclaimable:1536kB kernel_stack:280kB pagetables:348kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0
Normal: 334kB 208kB 2216kB 2232kB 6864kB 41128kB 22256kB 6512kB 31024kB 22048kB 0*4096kB = 26820kB
2179 total pagecache pages
16384 pages of RAM
9857 free pages
1411 reserved pages
399 slab pages
473 pages shared
0 pages swap cached
---------- Post updated at 04:31 PM ---------- Previous update was at 04:22 PM ----------
==========================
by the way, this is free memory info after start-up of the board:
total used free shared buffers
Mem: 60308 23340 36968 0 0
Swap: 0 0 0
Total: 60308 23340 36968
it seems that the machine has no swap memory!
---------- Post updated at 04:38 PM ---------- Previous update was at 04:31 PM ----------
the board has sdcard interface
if a swap file will be defined on sdcard, will be solved the problem?