[okl4-developer] second wombat
Geoffrey Lee
glee at ok-labs.com
Tue Oct 7 14:37:37 EST 2008
On Mon, Oct 06, 2008 at 07:15:53PM -0400, Ashish Bijlani wrote:
> I think there is conflict between the init processes from the two wombats:
>
> vserial: init done (handle: 0, owner: 18001, mask: 2
> vserial: init done (handle: 1, owner: 1c001, mask: 2)
> start_thread current = 81f2dd60 pc = 800bd0, sp = 1ac5f30 name: L_1
> start_thread current = 8272dd60 pc = 800bd0, sp = 1e96f30 name: L2_1
Ashish - if you are referring to the /sbin/init processes in
OK Linux they wouldn't be conflicting directly - each would run
in its own separate VM. From the symptoms however it seems
that the serial sharing is getting confused, I would debug
the vserial <-> OK Linux interactions between the two
OK Linux VMs.
-gl
>
> Does anybody have any idea?
>
> -Ashish
>
> On Mon, Oct 6, 2008 at 2:54 AM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
> > I get Error Code = 2 for L_syscall and L2_syscall
> >
> >
> >
> >> showtcbext
> > tcb/tid/name [current]: L1
> > No thread named: L1
> >> showtcbext
> > tcb/tid/name [current]: L_syscall
> > === L_syscall == TCB: f00309a0 == ID: 00020001 = e0501e00/e0501e00 ==
> > APRIO/EPRIO: 0x63/0x63 ===
> > UIP: 810b9a2c queues: rB space: f01049f8/5 pager: roottask
> > USP: 811cc5cc tstate: WAIT_FOREVER ready: NIL_THRD:NIL_THRD pdir : f0105900
> > sndhd : NIL_THRD blocked : L_syscal:L_syscal waiting_for : L_timer
> > ts length : 0x2710 us, curr ts: 0x2710 us
> > resources: 00000000 [ek], ARM [PID: 0, vspace: 1, domain: 10,
> > dom_mask 55510001]
> > continuation: f0002428 preemption_cont: 00000000
> > scheduler: L_syscal exception_handler: roottask
> > partner: L_timer saved partner: NIL_THRD saved state: ABORTED
> > tcb_idx: 7
> > references: T f010184c->f0031380(I)->f0031420(I)->f0031358(I)->f00310c0(I)->f0031160(I)->f0031098(I)->f0030f60(I)->f0031000(I)->f0030f38(I)->f0030ca0(I)->f0030d40(I)->f0030c78(I)->f010844c(I)->f0030a80(I)
> >
> > user handle: 00000000 cop flags: 00
> > preempt flags: 00 [~]
> > incoming notify bits: 00000000 notify mask: 00000000
> > last preempted_ip: 810040c4 preempt_callback_ip: 810041f8
> >
> > mr( 0): 00000000 811cc648 811cc604 811cc608 811c4640 811cc648 01e97d44 000000c0
> > mr( 8): 00002654 00988e78 01e97d44 0002cef4 ef900066 40000010 00000000 00000000
> > mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > Message Tag: 0 untyped, label = 0, flags = -
> >
> > Acceptor: 00000000 (a) Error code: 2
> >
> >
> >
> >
> >
> >
> >> showtcbext
> > tcb/tid/name [current]: L2_syscall
> > === L2_syscall == TCB: f0030b00 == ID: 00024001 = e0601e00/e0601e00 ==
> > APRIO/EPRIO: 0x63/0x63 ===
> > UIP: 81eb99c8 queues: rb space: f0104910/6 pager: roottask
> > USP: 8282ff60 tstate: WAIT_FOREVER ready: NIL_THRD:NIL_THRD pdir : f0105800
> > sndhd : NIL_THRD blocked : NIL_THRD:NIL_THRD waiting_for : NIL_THRD
> > ts length : 0x2710 us, curr ts: 0x2710 us
> > resources: 00000000 [ek], ARM [PID: 0, vspace: 1, domain: 5, dom_mask 401]
> > continuation: f0002428 preemption_cont: 00000000
> > scheduler: L2_sysca exception_handler: roottask
> > partner: ANY_THRD saved partner: NIL_THRD saved state: ABORTED
> > tcb_idx: 8
> > references: T f0101854->f0030e00(I)->f0030ea0(I)->f0030dd8(I)->f0030be0(I)
> >
> > user handle: 00000000 cop flags: 00
> > preempt flags: 00 [~]
> > incoming notify bits: 00000000 notify mask: 00000000
> > last preempted_ip: 81e07844 preempt_callback_ip: 81e042ec
> >
> > mr( 0): 00000000 00000001 8282c000 00000000 8282c05c 81fbb4ec 8002c380 00000000
> > mr( 8): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> > Message Tag: 0 untyped, label = 0, flags = -
> >
> > Acceptor: 00000000 (a) Error code: 2
> >
> >
> > Upon debugging more I found out the Error Code 2 comes because of this :
> >
> > "
> > Mount-cache hash table entries: 512
> > current = L2_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L2_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L2_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > Mount-cache hash table entries: 512
> > current = L_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> >
> > current = L_syscall
> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
> > "
> >
> > Is this normal? How do I fix this?
> >
> > Thanks,
> > Ashish
> >
> >
> > On Sun, Oct 5, 2008 at 8:54 PM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
> >>> showtcbext
> >> tcb/tid/name [current]: L2_1
> >> === L2_1 == TCB: f0030dc0 == ID: 0002c001 = e0801f00/e0801f00 ==
> >> APRIO/EPRIO: 0x62/0x62 ===
> >> UIP: 00800bd0 queues: Rb space: f0104740/8 pager: L2_syscall
> >> USP: 01c26f30 tstate: RUNNING ready: L2_1 :L2_1 pdir : f0105600
> >> sndhd : NIL_THRD blocked : NIL_THRD:NIL_THRD waiting_for : NIL_THRD
> >> ts length : 0x2710 us, curr ts: 0x2710 us
> >> resources: 00000000 [ek], ARM [PID: 31, vspace: 0, domain: 7, dom_mask 4001]
> >> continuation: ffff0cf4 preemption_cont: 00000000
> >> scheduler: L2_sysca exception_handler: L2_sysca
> >> partner: NIL_THRD saved partner: NIL_THRD saved state: ABORTED
> >> tcb_idx: a
> >> references: T f0101864
> >>
> >> user handle: 00000000 cop flags: 00
> >> preempt flags: 00 [~]
> >> incoming notify bits: 00000000 notify mask: 00000000
> >> last preempted_ip: 00000000 preempt_callback_ip: 00000000
> >>
> >> mr( 0): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> >> mr( 8): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> >> mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> >> mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> >> Message Tag: 0 untyped, label = 0, flags = -
> >>
> >> Acceptor: 00000000 (a) Error code: 0
> >>
> >>
> >> On Sun, Oct 5, 2008 at 8:51 PM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
> >>> Hi,
> >>>
> >>> I'm running two wombats on emulated (skyeye) gumstix platform.
> >>> However, the wombat that boots up last doesn't prints any msgs on the
> >>> serial console. AFAIK, once linux starts "init" process msgs over
> >>> serial console appear through vserial server/client model and not
> >>> through L4KDB. However, the latter wombat either doesn't get serial
> >>> console to dump msgs or it is blocked on some event; I'm not sure
> >>> though. I've modified vserial server in iguana to make the latter
> >>> wombat's vserial client as the active_virtual client, but I don't see
> >>> any output. What could be the reason?
> >>>
> >>> snippet from vserial to make the last wombat as active_virtual
> >>>
> >>> "
> >>> for (i = 0; i < 4; i++)
> >>> {
> >>> if (virtual_device_instance[i].valid_instance)
> >>> {
> >>> virtual_device_instance[i].serial_device = (void *)(serial_device);
> >>> // XXX virtual_device_instance[i].thread = *thread;
> >>> // XXX virtual_device_instance[i].mask = mask;
> >>>
> >>> virtual_device_instance[i].si_start =
> >>> virtual_device_instance[i].si_end = NULL;
> >>> virtual_device_instance[i].si_comp_end =
> >>> virtual_device_instance[i].si_comp_start = NULL;
> >>>
> >>> if (serial_device->active_virtual == NULL)
> >>> {
> >>> serial_device->active_virtual = &virtual_device_instance[i];
> >>> serial_device->last_virtual = &virtual_device_instance[i];
> >>> }
> >>> else
> >>> {
> >>> serial_device->active_virtual = &virtual_device_instance[i];
> >>> serial_device->last_virtual->next = &virtual_device_instance[i];
> >>> serial_device->last_virtual = &virtual_device_instance[i];
> >>> }
> >>> }
> >>> }
> >>> "
> >>>
> >>> Output snippet
> >>>
> >>> "
> >>> NET: Registered protocol family 15
> >>> VFS: Mounted root (ext2 filesystem) readonly.
> >>> PXA FFUART IRQ: 33
> >>> vserial: init done (handle: 0, owner: 18001, mask: 2)
> >>>
> >>> Client: 0x0
> >>> io scheduler noop registered
> >>> io scheduler anticipatory registered
> >>> io scheduler deadline registered
> >>> io scheduler cfq registered (default)
> >>> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
> >>> loop: module loaded
> >>> tun: Universal TUN/TAP device driver, 1.6
> >>> tun: (C) 1999-2004 Max Krasnyansky <maxk at qualcomm.com>
> >>> igms0: unknown partition table
> >>> Iguana ramdisk driver initialized
> >>> kobject_add failed for ttyS0 with -EEXIST, don't try to register
> >>> things with the same name in the same directory.
> >>> This architecture does not implement dump_stack()
> >>> Iguana virtual serial driver v1.0
> >>> TCP cubic registered
> >>> NET: Registered protocol family 1
> >>> NET: Registered protocol family 17
> >>> NET: Registered protocol family 15
> >>> VFS: Mounted root (ext2 filesystem) readonly.
> >>> vserial: init done (handle: 1, owner: 1c001, mask: 2)
> >>>
> >>> Client: 0x1c001
> >>> start_thread current = 8282bd60 pc = 800bd0, sp = 1c26f30
> >>>
> >>> Client: 0x1c001
> >>>
> >>> Client: 0x1c001
> >>>
> >>> Client: 0x1c001
> >>>
> >>> Client: 0x1c001
> >>>
> >>> "
> >>>
> >>> It doesn't prints anything after this. For the first "vserial: init
> >>> done (handle: 0, owner: 18001, mask: 2)" it shows Client as NULL.
> >>> Second time it shows the correct client.
> >>>
> >>>
> >>>> showqueue
> >>> Key: (X) blocked, <X> on CPU, {X} halted, !X! aborted
> >>>
> >>> [255]:
> >>> WAIT_FOREVER
> >>> (roottask)
> >>>
> >>> [240]:
> >>> WAIT_FOREVER
> >>> (vtimer)
> >>> WAIT_FOREVER
> >>> (vrtc)
> >>>
> >>> [200]:
> >>> WAIT_FOREVER
> >>> (event)
> >>>
> >>> [110]:
> >>> RUNNING
> >>> <vserial>
> >>>
> >>> [100]:
> >>> WAIT_FOREVER
> >>> (L_timer)
> >>> WAIT_FOREVER
> >>> (L2_timer)
> >>>
> >>> [ 99]:
> >>> WAIT_FOREVER
> >>> (L_syscal)
> >>> WAIT_FOREVER
> >>> (L2_sysca)
> >>>
> >>> [ 98]:
> >>> WAIT_FOREVER
> >>> (L_1)
> >>> RUNNING
> >>> L2_1
> >>> WAIT_FOREVER
> >>> (L_49)
> >>> idle : idle_thread
> >>>
> >>> L2_1 represents the init process in wombat 2. This always shows L2_1
> >>> as RUNNING. But doesn't prints it within "<" and ">".
> >>>
> >>> Thanks,
> >>> Ashish
> >>>
> >>
> >
>
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