Re: where are initcalls defined?

[Luca Santini <luca.santini@spesonline.com>]

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thanks,
i solved the problem; but now my kernel hangs calling

sys_open((const char __user *) "/dev/ttyS2", O_RDWR, 0) ;

in init_post() function (init/mian.c)

any idea? this is complete kernel log:

[    0.000000] SPES start_kernel
[    0.000000] Linux version 2.6.26-rc8-00210-g35534ad-dirty 
(s@s-laptop) (gcc version 3.4.5 20060103 (3.4.5-10.1a)) #221 8
[    0.000000] SPES qui dovrei vedere :
[    0.000000]    Linux version 2.6.26-rc8-00210-g35534ad-dirty 
(s@s-laptop) (gcc version 3.4.5 20060103 (3.4.5-10.1a)) #28
[    0.000000]
[    0.000000] Boot params:
[    0.000000] ... MOUNT_ROOT_RDONLY - 00000001
[    0.000000] ... RAMDISK_FLAGS     - 00000000
[    0.000000] ... ORIG_ROOT_DEV     - 00000200
[    0.000000] ... LOADER_TYPE       - 00000001
[    0.000000] ... INITRD_START      - 00360000
[    0.000000] ... INITRD_SIZE       - 0021de5b
[    0.000000] Booting machvec: EDOSK7760
[    0.000000] SPES machvec.c Booting machvec: EDOSK7760
[    0.000000] SPES non dichiarato 25 ;sostituito con generic
[    0.000000] SPES non dichiarato 26 ;sostituito con generic
[    0.000000] SPES non dichiarato 27 ;sostituito con generic
[    0.000000] Node 0: start_pfn = 0xc000, low = 0x10000
[    0.000000] Zone PFN ranges:
[    0.000000]   Normal      49152 ->    65536
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[1] active PFN ranges
[    0.000000]     0:    49152 ->    65536
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  
Total pages: 16256
[    0.000000] Kernel command line: memdM sh_mvíOSK7760 
console=ttySC2,115200 rw sh_pclk3335000 root=/dev/ram
[    0.000000] SPES qui dovrei vedere :
[    0.000000]   <5>Kernel command line: memdM sh_mvíOSK7760 
console=ttySC2,115200 rw sh_pclk3335000 root=/dev/ram
[    0.000000]  SPES  init_edosk7760
[    0.000000]          SPES  init_edosk7760 -> setup scif2 irq
[    0.000000]          SPES  init_edosk7760 -> setup usbhi irq
[    0.000000]          SPES  init_edosk7760 -> setup dmabrg irq
[    0.000000]  SPES  init_edosk7760 uscita
[    0.000000] PID hash table entries: 256 (order: 8, 1024 bytes)
[    0.000000] Using tmu for system timer
[    0.000171] Using 8.333 MHz high precision timer.
[    0.001096] Console: colour dummy device 80x25
[    0.001191] sh-sci.c SPES sci_init_ports
[    0.001291] sh-sci.c SPES sci_init_ports fatto
[    0.001375] SPES serial_console_setup
[    0.001454]          SPES co->index[2]
[    0.001534] clk[33333333]
[    0.001606] sci_set_termios
[    0.001682]  baud[115200]
[    0.001974] sci_init_pins_scif
[    0.002040] sci_init_pins_scif fatta
[    0.002107] sci_set_termios fatto
[    0.002178] SPES serial_console_setup fatto
[    0.002258] console [ttySC2] enabled
[    0.223054] SPES fatto sci_console_init
[    0.227993] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
[    0.235353] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
[    0.254382] Memory: 60288k/65536k available (1814k kernel code, 433k 
data, 108k init)
[    0.256619] PVR\x04050187 CVR 480000 PRR\0000510
[    0.261457] I-cache : n_ways=2 n_sets%6 way_incr92
[    0.266631] I-cache : entry_mask=0x00001fe0 alias_mask=0x00001000 
n_aliases=2
[    0.273705] D-cache : n_ways=2 n_setsQ2 way_incr\x16384
[    0.278984] D-cache : entry_mask=0x00003fe0 alias_mask=0x00003000 
n_aliases=4
[    0.361693] Mount-cache hash table entries: 512
[    0.365603] CPU: SH7760
[    0.366456] SPES     kernel_init
[    0.367600] SPES     do_basic_setup
[    0.369073] SPES do_basic_setup
[    0.380169] SPES do_initcalls
[    0.380281] net_namespace: 192 bytes
[    0.382300] NET: Registered protocol family 16
[    0.418223] SCSI subsystem initialized
[    0.446563] NET: Registered protocol family 2
[    0.484104] IP route cache hash table entries: 1024 (order: 0, 4096 
bytes)
[    0.487034] TCP established hash table entries: 2048 (order: 2, 16384 
bytes)
[    0.493094] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[    0.499041] TCP: Hash tables configured (established 2048 bind 2048)
[    0.505043] TCP reno registered
[    0.519774] NET: Registered protocol family 1
[    0.522395] checking if image is initramfs...it isn't (no cpio 
magic); looks like an initrd
[    2.343449] Freeing initrd memory: 2167k freed
[    2.347444] SPES  init_edosk7760_flash
[    2.347627] SPES  init_edosk7760_flash fatto DUMMY
[    2.361480] msgmni has been set to 122
[    2.361679] io scheduler noop registered
[    2.363492] io scheduler anticipatory registered (default)
[    2.369100] io scheduler deadline registered
[    2.373438] io scheduler cfq registered
[    2.480931] SuperH SCI(F) driver initialized
[    2.481057] SPES sci_init
[    2.482407] SPES sci_probe
[    2.485146] SPES sci_config_port
[    2.488245] sh-sci: ttySC0 at MMIO 0xfe600000 (irq = 55) is a scif
[    2.496003] SPES sci_config_port
[    2.497499] sh-sci: ttySC1 at MMIO 0xfe610000 (irq = 75) is a scif
[    2.505208] SPES sci_config_port
[    2.506830] sh-sci: ttySC2 at MMIO 0xfe620000 (irq = 79) is a scif
[    2.514511] sh-sci sh-sci: Attempting to register port 4 when only 3 
are available.
[    2.520679] sh-sci sh-sci: Consider bumping 
CONFIG_SERIAL_SH_SCI_NR_UARTS!
[    2.527423] Fatta sci_probe
[    2.531561] SPES sci_init: platform_driver_register
[    2.535130] SPES fatta sci_init
[    2.590428] brd: module loaded
[    2.592045] Driver 'sd' needs updating - please use bus_type methods
[    2.595622] Driver 'sr' needs updating - please use bus_type methods
[    2.607078] physmap platform flash device: 01000000 at a0000000
[    2.607478] physmap-flash.0: Found 1 x32 devices at 0x0 in 16-bit bank
[    2.616555] Support for command set 0001 not present
[    2.618906] gen_probe: No supported Vendor Command Set found
[    2.627107] physmap-flash physmap-flash.0: map_probe failed
[    2.630803] TCP cubic registered
[    2.633135] NET: Registered protocol family 17
[    2.642923] SPES do_initcalls: initcalls count[114] !
[    2.643059] SPES do_basic_setupFINE
[    2.645987] SPES     sys_access
[    2.648969] SPES     prepare_namespace
[    2.652673] RAMDISK: Compressed image found at block 0
[    5.709934] EXT2-fs warning: mounting unchecked fs, running e2fsck is 
recommended
[    5.712064] VFS: Mounted root (ext2 filesystem).
[    5.717189] SPES     init_post
[    5.719317] Freeing unused kernel memory: 108k freed
[    5.724083] SPES opening console




Stuart MENEFY wrote:
> Luca
>
> Luca Santini wrote:
>> I'm trying to port kernel 2.6.26 to edosk7760 board.
>> my kernel hangs up during initcalls;
>> with a little debugging i found that with a minimal config (only ext2 
>> fs for example)
>> skipping the 71th initcalls my kernel continues to boot until
>>
>>
>> [    1.665032] No filesystem could mount root, tried:  ext2
>> [    1.670330] Kernel panic - not syncing: VFS: Unable to mount root 
>> fs on unknown-block(1,0)
>>
>>
>> where can i found the initcalls vector list ?
>
> The initcalls table is built by the linker by concatenating all
> the .initcall<level>.init sections. These are created by the
> <level>_initcall macros.
>
> The easiest way to debug this sort of problem is to run with the
> initcall_debug kernel command line option, which will print the
> name of each function before calling it.
>
> Stuart
>
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