[Xenomai-core] [PXA + Xenomai] Latency program

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* [Xenomai-core] [PXA + Xenomai] Latency program
@ 2009-08-28 17:50 Felipe Castro
  2009-08-28 18:00 ` Gilles Chanteperdrix
  0 siblings, 1 reply; 10+ messages in thread
From: Felipe Castro @ 2009-08-28 17:50 UTC (permalink / raw)
  To: xenomai

[-- Attachment #1: Type: text/plain, Size: 11650 bytes --]

Hi ,

I'm trying xenomai running on PXA270 Voipac module.
Acctually i have a problem when running the lantency test program.

The module loads OK , but when i run latency program:

[  110.874334] Xenomai: starting native API services.
[  282.865308] I-pipe: Detected illicit call from domain 'Xenomai'
[  282.865356]         into a service reserved for domain 'Linux' and below.
[  282.903226] [<c0023068>] (dump_stack+0x0/0x18) from [<c006cbcc>]
(ipipe_check_context+0xdc/0x100)
[  282.929809] [<c006caf0>] (ipipe_check_context+0x0/0x100) from
[<c0066168>] (module_address_lookup+0x34/0x108)
[  282.959374] [<c0066134>] (module_address_lookup+0x0/0x108) from
[<c00670e4>] (kallsyms_lookup+0x7c/0x80)
[  282.987650] [<c0067068>] (kallsyms_lookup+0x0/0x80) from [<c0067208>]
(sprint_symbol+0x38/0xb0)
[  283.013599] [<c00671d0>] (sprint_symbol+0x0/0xb0) from [<c00672a4>]
(__print_symbol+0x24/0x38)
[  283.039294]  r6:c03334f8 r5:c7035e24 r4:c02b5728
[  283.053066] [<c0067280>] (__print_symbol+0x0/0x38) from [<c007cfec>]
(xnpod_trap_fault+0xc8/0x258)
[  283.079818]  r5:c7040810 r4:c7035f40
[  283.090466] [<c007cf24>] (xnpod_trap_fault+0x0/0x258) from [<c0073b30>]
(xnarch_trap_fault+0x24/0x2c)
[  283.117967]  r6:c0330cc4 r5:c02f6c48 r4:c0332950
[  283.131742] [<c0073b0c>] (xnarch_trap_fault+0x0/0x2c) from [<c01dcd38>]
(exception_event+0x50/0x74)
[  283.158751] [<c01dcce8>] (exception_event+0x0/0x74) from [<c006bbac>]
(__ipipe_dispatch_event+0xdc/0x1e8)
[  283.187285]  r4:00000000
[  283.194805] [<c006bad0>] (__ipipe_dispatch_event+0x0/0x1e8) from
[<c001ee04>] (do_fpe+0x18/0x3c)
[  283.221016] I-pipe tracer log (100 points):
[  283.233469]  | +  func                    0 ipipe_trace_panic_freeze+0x10
(ipipe_check_context+0x5c)
[  283.260735]  | +  func                   -4 ipipe_check_context+0x10
(module_address_lookup+0x34)
[  283.287176]  | +  func                   -6 module_address_lookup+0x10
(kallsyms_lookup+0x7c)
[  283.312583]  | +  func                  -10 in_gate_area_no_task+0x10
(is_ksym_addr+0x34)
[  283.336956]  | +  func                  -13 is_ksym_addr+0x10
(kallsyms_lookup+0x38)
[  283.360036]  | +  func                  -15 kallsyms_lookup+0x14
(sprint_symbol+0x38)
[  283.383375]  | +  func                  -18 sprint_symbol+0x14
(__print_symbol+0x24)
[  283.406456]  | +  func                  -21 __print_symbol+0x14
(xnpod_trap_fault+0xc8)
[  283.430313]  | +  func                  -24 xnpod_trap_fault+0x14
(xnarch_trap_fault+0x24)
[  283.454943]  | +  func                  -27 xnarch_trap_fault+0x14
(exception_event+0x50)
[  283.479316]  | +  func                  -30 exception_event+0x10
(__ipipe_dispatch_event+0xdc)
[  283.504982]  | +  func                  -34 __ipipe_dispatch_event+0x14
(do_fpe+0x18)
[  283.528320]  | +  end     0x80000001    -45 __ipipe_dispatch_event+0x1c8
(__ipipe_syscall_root+0x80)
[  283.555562]  | +  begin   0x80000001    -48 __ipipe_dispatch_event+0x104
(__ipipe_syscall_root+0x80)
[  283.582778]  | +  end     0x80000000    -52
ipipe_unstall_pipeline_head+0x90 (xnshadow_harden+0x1a0)
[  283.610021]  | #  begin   0x80000000    -56
ipipe_unstall_pipeline_head+0x34 (xnshadow_harden+0x1a0)
[  283.637262]    #  func                  -58
ipipe_unstall_pipeline_head+0x10 (xnshadow_harden+0x1a0)
[  283.664477]    #  func                  -63 xnpod_switch_fpu+0x10
(xnshadow_harden+0x190)
[  283.688851]  | #  end     0x80000001    -66 __sched_text_start+0x6d0
(xnshadow_harden+0xa8)
[  283.713793]  | #  begin   0x80000001    -69 __sched_text_start+0x6b8
(xnshadow_harden+0xa8)
[  283.738707]  | #  end     0x80000000    -71 __sched_text_start+0x65c
(xnshadow_harden+0xa8)
[  283.763597]  | #  [  304] telnetd -1    -92 xnpod_schedule+0xb4
(xnpod_schedule_handler+0x54)
[  283.789056]  | #  func                  -95 xnpod_schedule+0x14
(xnpod_schedule_handler+0x54)
[  283.814463]  | #  func                  -98 xnpod_schedule_handler+0x10
(__ipipe_sync_stage+0x1b4)
[  283.841162]  | +  func                 -101 __ipipe_sync_stage+0x10
(ipipe_suspend_domain+0xa4)
[  283.867086]  | +  func                 -104 ipipe_suspend_domain+0x10
(__ipipe_walk_pipeline+0x74)
[  283.893783]  |   +func                 -108 __ipipe_walk_pipeline+0x10
(__ipipe_restore_pipeline_head+0xc4)
[  283.922809]  | * +func                 -111
__ipipe_restore_pipeline_head+0x10 (gatekeeper_thread+0x180)
[  283.951058]  | * +func                 -116 __ipipe_set_irq_pending+0x10
(__ipipe_dispatch_wired+0x7c)
[  283.978792]  | * +func                 -120 __ipipe_dispatch_wired+0x10
(__ipipe_handle_irq+0xa4)
[  284.005233]  | * +func                 -124 __ipipe_handle_irq+0x10
(ipipe_trigger_irq+0x7c)
[  284.030381]  | * +func                 -128 ipipe_trigger_irq+0x10
(xnpod_schedule+0x34)
[  284.054494]  | * +func                 -130 xnpod_schedule+0x14
(gatekeeper_thread+0x164)
[  284.078868]  | * +func                 -133 disengage_irq_shield+0x10
(gatekeeper_thread+0x160)
[  284.104792]  | * +[  342] display- 0   -142 xnpod_resume_thread+0x70
(gatekeeper_thread+0x15c)
[  284.130509]  | * +func                 -145 xnpod_resume_thread+0x14
(gatekeeper_thread+0x15c)
[  284.156173]  |   +begin   0x80000000   -147 gatekeeper_thread+0x140
(kthread+0x58)
[  284.178789]  |   +end     0x80000000   -150
__ipipe_restore_pipeline_head+0xd8 (rpi_pop+0x4cc)
[  284.204454]  | * +func                 -153
__ipipe_restore_pipeline_head+0x10 (rpi_pop+0x4cc)
[  284.230119]  |   +begin   0x80000000   -157 rpi_pop+0x38
(gatekeeper_thread+0x120)
[  284.252709]      +func                 -159 rpi_pop+0x14
(gatekeeper_thread+0x120)
[  284.275273]      +func                 -162 kthread_should_stop+0x10
(gatekeeper_thread+0xf8)
[  284.300680]      +func                 -165 ipipe_check_context+0x10
(__sched_text_start+0x750)
[  284.326603]      +func                 -168 finish_task_switch+0x10
(__sched_text_start+0x6e8)
[  284.352269]  |   +end     0x80000001   -170 __sched_text_start+0x6d0
(gatekeeper_thread+0xf4)
[  284.377701]  |   +begin   0x80000001   -173 __sched_text_start+0x6b8
(gatekeeper_thread+0xf4)
[  284.403133]  |   +end     0x80000000   -176 __sched_text_start+0x65c
(gatekeeper_thread+0xf4)
[  284.428565]  |   +func                 -180 ipipe_check_context+0x10
(__atomic_notifier_call_chain+0x68)
[  284.456841]  |   +func                 -182 iwmmxt_do+0x10
(notifier_call_chain+0x4c)
[  284.480180]  |   +func                 -185 nwfpe_notify+0x10
(notifier_call_chain+0x4c)
[  284.504321]  |   +func                 -188 notifier_call_chain+0x10
(__atomic_notifier_call_chain+0x5c)
[  284.532571]  |   +func                 -191 ipipe_check_context+0x10
(__atomic_notifier_call_chain+0x34)
[  284.560845]  |   +func                 -193
__atomic_notifier_call_chain+0x14 (atomic_notifier_call_chain+0x24)
[  284.590904]  |   +func                 -195
atomic_notifier_call_chain+0x14 (__switch_to+0x30)
[  284.616570]  |   +begin   0x80000000   -199 __sched_text_start+0x634
(xnshadow_harden+0xa8)
[  284.641486]  |   +end     0x80000001   -201 __sched_text_start+0x4a0
(xnshadow_harden+0xa8)
[  284.666375]  |   +begin   0x80000001   -204 __sched_text_start+0x484
(xnshadow_harden+0xa8)
[  284.691290]  |   +end     0x80000001   -206 __ipipe_dispatch_event+0x1c8
(__sched_text_start+0x44c)
[  284.718248]  |   +begin   0x80000001   -209 __ipipe_dispatch_event+0x104
(__sched_text_start+0x44c)
[  284.745206]  |   +end     0x80000000   -211
__ipipe_restore_pipeline_head+0xd8 (schedule_event+0xbb4)
[  284.772707]  | * +func                 -214
__ipipe_restore_pipeline_head+0x10 (schedule_event+0xbb4)
[  284.800180]  |   +begin   0x80000000   -216 schedule_event+0x6b0
(__ipipe_dispatch_event+0xdc)
[  284.825872]      +func                 -219 schedule_event+0x14
(__ipipe_dispatch_event+0xdc)
[  284.851278]  |   +end     0x80000001   -222 __ipipe_dispatch_event+0xc4
(__sched_text_start+0x44c)
[  284.878004]  |   +begin   0x80000001   -225 __ipipe_dispatch_event+0x40
(__sched_text_start+0x44c)
[  284.904727]      +func                 -227 __ipipe_dispatch_event+0x14
(__sched_text_start+0x44c)
[  284.931427]      +func                 -230 ipipe_check_context+0x10
(__sched_text_start+0x3c0)
[  284.957351]  |   +end     0x80000000   -232 __ipipe_unstall_root+0x64
(__sched_text_start+0x3b0)
[  284.983533]  |   #begin   0x80000000   -235 __ipipe_unstall_root+0x34
(__sched_text_start+0x3b0)
[  285.009741]      #func                 -237 __ipipe_unstall_root+0x10
(__sched_text_start+0x3b0)
[  285.035922]      #func                 -243 pick_next_task_rt+0x10
(__sched_text_start+0x250)
[  285.061329]      #func                 -247 check_spread+0x10
(put_prev_task_fair+0x3c)
[  285.085185]      #func                 -249 put_prev_task_fair+0x10
(__sched_text_start+0x214)
[  285.110850]      #func                 -254 calc_delta_mine+0x14
(update_curr+0xcc)
[  285.133672]      #func                 -257 update_curr+0x14
(dequeue_task_fair+0x2c)
[  285.157011]      #func                 -260 dequeue_task_fair+0x10
(dequeue_task+0x124)
[  285.180867]      #func                 -265 dequeue_task+0x14
(deactivate_task+0x2c)
[  285.203948]      #func                 -268 deactivate_task+0x10
(__sched_text_start+0x1f8)
[  285.228837]  |   #end     0x80000001   -271 __sched_text_start+0x18c
(xnshadow_harden+0xa8)
[  285.253753]  |   #begin   0x80000001   -273 __sched_text_start+0x174
(xnshadow_harden+0xa8)
[  285.278669]      #func                 -276 ipipe_check_context+0x10
(__sched_text_start+0x144)
[  285.304592]      #func                 -279 sched_clock+0x10
(sched_clock_cpu+0x30)
[  285.327415]      #func                 -281 sched_clock_cpu+0x10
(__sched_text_start+0x134)
[  285.352304]  |   #end     0x80000001   -283 __sched_text_start+0x128
(xnshadow_harden+0xa8)
[  285.377220]  |   +begin   0x80000001   -286 __sched_text_start+0x108
(xnshadow_harden+0xa8)
[  285.402135]      +func                 -288 ipipe_check_context+0x10
(__sched_text_start+0x94)
[  285.427801]      +func                 -290 preempt_schedule+0x10
(__sched_text_start+0x78)
[  285.452691]      +func                 -293 ipipe_check_context+0x10
(__sched_text_start+0x60)
[  285.478355]      +func                 -295 ipipe_check_context+0x10
(__sched_text_start+0x24)
[  285.504020]      +func                 -297 __sched_text_start+0x14
(xnshadow_harden+0xa8)
[  285.528653]      +func                 -300 preempt_schedule+0x10
(__wake_up_sync+0xdc)
[  285.552509]      +func                 -302 ipipe_check_context+0x10
(__wake_up_sync+0xc4)
[  285.577140]  |   +end     0x80000000   -304 __ipipe_unstall_root+0x64
(__ipipe_restore_root+0x64)
[  285.603580]  |   #begin   0x80000000   -306 __ipipe_unstall_root+0x34
(__ipipe_restore_root+0x64)
[  285.630021]      #func                 -308 __ipipe_unstall_root+0x10
(__ipipe_restore_root+0x64)
[  285.656461]      #func                 -311 __ipipe_restore_root+0x10
(__wake_up_sync+0xbc)
[  285.681351]      #func                 -313 preempt_schedule+0x10
(try_to_wake_up+0x138)
[  285.705466]      #func                 -315 ipipe_check_context+0x10
(try_to_wake_up+0x120)
[  285.730355]  |   #end     0x80000001   -318 __ipipe_restore_root+0x58
(try_to_wake_up+0x118)
[  285.755503]  |   #begin   0x80000001   -320 __ipipe_restore_root+0x38
(try_to_wake_up+0x118)
[  285.780689] invalid use of FPU in Xenomai context at 0x93e0
[  285.797290] Xenomai: Switching display-340 to secondary mode after
exception #5 from user-space at 0x93e0 (pid 342)
[  285.829719] Xenomai: registered exported object dispsem-342 (semaphores)

Any idea about ?

Thanks

Felipe

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-28 17:50 [Xenomai-core] [PXA + Xenomai] Latency program Felipe Castro
@ 2009-08-28 18:00 ` Gilles Chanteperdrix
  2009-08-28 18:04   ` Gilles Chanteperdrix
  0 siblings, 1 reply; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-28 18:00 UTC (permalink / raw)
  To: Felipe Castro; +Cc: xenomai

Felipe Castro wrote:
> Hi ,
> 
> I'm trying xenomai running on PXA270 Voipac module.
> Acctually i have a problem when running the lantency test program.
> 
> The module loads OK , but when i run latency program:
> 
> [  110.874334] Xenomai: starting native API services.
> [  282.865308] I-pipe: Detected illicit call from domain 'Xenomai'
> [  282.865356]         into a service reserved for domain 'Linux' and below.
> [  282.903226] [<c0023068>] (dump_stack+0x0/0x18) from [<c006cbcc>]
> (ipipe_check_context+0xdc/0x100)
> [  282.929809] [<c006caf0>] (ipipe_check_context+0x0/0x100) from
> [<c0066168>] (module_address_lookup+0x34/0x108)
> [  282.959374] [<c0066134>] (module_address_lookup+0x0/0x108) from
> [<c00670e4>] (kallsyms_lookup+0x7c/0x80)
> [  282.987650] [<c0067068>] (kallsyms_lookup+0x0/0x80) from [<c0067208>]
> (sprint_symbol+0x38/0xb0)
> [  283.013599] [<c00671d0>] (sprint_symbol+0x0/0xb0) from [<c00672a4>]
> (__print_symbol+0x24/0x38)
> [  283.039294]  r6:c03334f8 r5:c7035e24 r4:c02b5728
> [  283.053066] [<c0067280>] (__print_symbol+0x0/0x38) from [<c007cfec>]
> (xnpod_trap_fault+0xc8/0x258)
> [  283.079818]  r5:c7040810 r4:c7035f40
> [  283.090466] [<c007cf24>] (xnpod_trap_fault+0x0/0x258) from [<c0073b30>]
> (xnarch_trap_fault+0x24/0x2c)
> [  283.117967]  r6:c0330cc4 r5:c02f6c48 r4:c0332950
> [  283.131742] [<c0073b0c>] (xnarch_trap_fault+0x0/0x2c) from [<c01dcd38>]
> (exception_event+0x50/0x74)
> [  283.158751] [<c01dcce8>] (exception_event+0x0/0x74) from [<c006bbac>]
> (__ipipe_dispatch_event+0xdc/0x1e8)
> [  283.187285]  r4:00000000
> [  283.194805] [<c006bad0>] (__ipipe_dispatch_event+0x0/0x1e8) from
> [<c001ee04>] (do_fpe+0x18/0x3c)
> [  283.221016] I-pipe tracer log (100 points):
> [  283.233469]  | +  func                    0 ipipe_trace_panic_freeze+0x10
> (ipipe_check_context+0x5c)
> [  283.260735]  | +  func                   -4 ipipe_check_context+0x10
> (module_address_lookup+0x34)
> [  283.287176]  | +  func                   -6 module_address_lookup+0x10
> (kallsyms_lookup+0x7c)
> [  283.312583]  | +  func                  -10 in_gate_area_no_task+0x10
> (is_ksym_addr+0x34)
> [  283.336956]  | +  func                  -13 is_ksym_addr+0x10
> (kallsyms_lookup+0x38)
> [  283.360036]  | +  func                  -15 kallsyms_lookup+0x14
> (sprint_symbol+0x38)
> [  283.383375]  | +  func                  -18 sprint_symbol+0x14
> (__print_symbol+0x24)
> [  283.406456]  | +  func                  -21 __print_symbol+0x14
> (xnpod_trap_fault+0xc8)
> [  283.430313]  | +  func                  -24 xnpod_trap_fault+0x14
> (xnarch_trap_fault+0x24)
> [  283.454943]  | +  func                  -27 xnarch_trap_fault+0x14
> (exception_event+0x50)
> [  283.479316]  | +  func                  -30 exception_event+0x10
> (__ipipe_dispatch_event+0xdc)
> [  283.504982]  | +  func                  -34 __ipipe_dispatch_event+0x14
> (do_fpe+0x18)
> [  283.528320]  | +  end     0x80000001    -45 __ipipe_dispatch_event+0x1c8
> (__ipipe_syscall_root+0x80)
> [  283.555562]  | +  begin   0x80000001    -48 __ipipe_dispatch_event+0x104
> (__ipipe_syscall_root+0x80)
> [  283.582778]  | +  end     0x80000000    -52
> ipipe_unstall_pipeline_head+0x90 (xnshadow_harden+0x1a0)
> [  283.610021]  | #  begin   0x80000000    -56
> ipipe_unstall_pipeline_head+0x34 (xnshadow_harden+0x1a0)
> [  283.637262]    #  func                  -58
> ipipe_unstall_pipeline_head+0x10 (xnshadow_harden+0x1a0)
> [  283.664477]    #  func                  -63 xnpod_switch_fpu+0x10
> (xnshadow_harden+0x190)
> [  283.688851]  | #  end     0x80000001    -66 __sched_text_start+0x6d0
> (xnshadow_harden+0xa8)
> [  283.713793]  | #  begin   0x80000001    -69 __sched_text_start+0x6b8
> (xnshadow_harden+0xa8)
> [  283.738707]  | #  end     0x80000000    -71 __sched_text_start+0x65c
> (xnshadow_harden+0xa8)
> [  283.763597]  | #  [  304] telnetd -1    -92 xnpod_schedule+0xb4
> (xnpod_schedule_handler+0x54)
> [  283.789056]  | #  func                  -95 xnpod_schedule+0x14
> (xnpod_schedule_handler+0x54)
> [  283.814463]  | #  func                  -98 xnpod_schedule_handler+0x10
> (__ipipe_sync_stage+0x1b4)
> [  283.841162]  | +  func                 -101 __ipipe_sync_stage+0x10
> (ipipe_suspend_domain+0xa4)
> [  283.867086]  | +  func                 -104 ipipe_suspend_domain+0x10
> (__ipipe_walk_pipeline+0x74)
> [  283.893783]  |   +func                 -108 __ipipe_walk_pipeline+0x10
> (__ipipe_restore_pipeline_head+0xc4)
> [  283.922809]  | * +func                 -111
> __ipipe_restore_pipeline_head+0x10 (gatekeeper_thread+0x180)
> [  283.951058]  | * +func                 -116 __ipipe_set_irq_pending+0x10
> (__ipipe_dispatch_wired+0x7c)
> [  283.978792]  | * +func                 -120 __ipipe_dispatch_wired+0x10
> (__ipipe_handle_irq+0xa4)
> [  284.005233]  | * +func                 -124 __ipipe_handle_irq+0x10
> (ipipe_trigger_irq+0x7c)
> [  284.030381]  | * +func                 -128 ipipe_trigger_irq+0x10
> (xnpod_schedule+0x34)
> [  284.054494]  | * +func                 -130 xnpod_schedule+0x14
> (gatekeeper_thread+0x164)
> [  284.078868]  | * +func                 -133 disengage_irq_shield+0x10
> (gatekeeper_thread+0x160)
> [  284.104792]  | * +[  342] display- 0   -142 xnpod_resume_thread+0x70
> (gatekeeper_thread+0x15c)
> [  284.130509]  | * +func                 -145 xnpod_resume_thread+0x14
> (gatekeeper_thread+0x15c)
> [  284.156173]  |   +begin   0x80000000   -147 gatekeeper_thread+0x140
> (kthread+0x58)
> [  284.178789]  |   +end     0x80000000   -150
> __ipipe_restore_pipeline_head+0xd8 (rpi_pop+0x4cc)
> [  284.204454]  | * +func                 -153
> __ipipe_restore_pipeline_head+0x10 (rpi_pop+0x4cc)
> [  284.230119]  |   +begin   0x80000000   -157 rpi_pop+0x38
> (gatekeeper_thread+0x120)
> [  284.252709]      +func                 -159 rpi_pop+0x14
> (gatekeeper_thread+0x120)
> [  284.275273]      +func                 -162 kthread_should_stop+0x10
> (gatekeeper_thread+0xf8)
> [  284.300680]      +func                 -165 ipipe_check_context+0x10
> (__sched_text_start+0x750)
> [  284.326603]      +func                 -168 finish_task_switch+0x10
> (__sched_text_start+0x6e8)
> [  284.352269]  |   +end     0x80000001   -170 __sched_text_start+0x6d0
> (gatekeeper_thread+0xf4)
> [  284.377701]  |   +begin   0x80000001   -173 __sched_text_start+0x6b8
> (gatekeeper_thread+0xf4)
> [  284.403133]  |   +end     0x80000000   -176 __sched_text_start+0x65c
> (gatekeeper_thread+0xf4)
> [  284.428565]  |   +func                 -180 ipipe_check_context+0x10
> (__atomic_notifier_call_chain+0x68)
> [  284.456841]  |   +func                 -182 iwmmxt_do+0x10
> (notifier_call_chain+0x4c)
> [  284.480180]  |   +func                 -185 nwfpe_notify+0x10
> (notifier_call_chain+0x4c)
> [  284.504321]  |   +func                 -188 notifier_call_chain+0x10
> (__atomic_notifier_call_chain+0x5c)
> [  284.532571]  |   +func                 -191 ipipe_check_context+0x10
> (__atomic_notifier_call_chain+0x34)
> [  284.560845]  |   +func                 -193
> __atomic_notifier_call_chain+0x14 (atomic_notifier_call_chain+0x24)
> [  284.590904]  |   +func                 -195
> atomic_notifier_call_chain+0x14 (__switch_to+0x30)
> [  284.616570]  |   +begin   0x80000000   -199 __sched_text_start+0x634
> (xnshadow_harden+0xa8)
> [  284.641486]  |   +end     0x80000001   -201 __sched_text_start+0x4a0
> (xnshadow_harden+0xa8)
> [  284.666375]  |   +begin   0x80000001   -204 __sched_text_start+0x484
> (xnshadow_harden+0xa8)
> [  284.691290]  |   +end     0x80000001   -206 __ipipe_dispatch_event+0x1c8
> (__sched_text_start+0x44c)
> [  284.718248]  |   +begin   0x80000001   -209 __ipipe_dispatch_event+0x104
> (__sched_text_start+0x44c)
> [  284.745206]  |   +end     0x80000000   -211
> __ipipe_restore_pipeline_head+0xd8 (schedule_event+0xbb4)
> [  284.772707]  | * +func                 -214
> __ipipe_restore_pipeline_head+0x10 (schedule_event+0xbb4)
> [  284.800180]  |   +begin   0x80000000   -216 schedule_event+0x6b0
> (__ipipe_dispatch_event+0xdc)
> [  284.825872]      +func                 -219 schedule_event+0x14
> (__ipipe_dispatch_event+0xdc)
> [  284.851278]  |   +end     0x80000001   -222 __ipipe_dispatch_event+0xc4
> (__sched_text_start+0x44c)
> [  284.878004]  |   +begin   0x80000001   -225 __ipipe_dispatch_event+0x40
> (__sched_text_start+0x44c)
> [  284.904727]      +func                 -227 __ipipe_dispatch_event+0x14
> (__sched_text_start+0x44c)
> [  284.931427]      +func                 -230 ipipe_check_context+0x10
> (__sched_text_start+0x3c0)
> [  284.957351]  |   +end     0x80000000   -232 __ipipe_unstall_root+0x64
> (__sched_text_start+0x3b0)
> [  284.983533]  |   #begin   0x80000000   -235 __ipipe_unstall_root+0x34
> (__sched_text_start+0x3b0)
> [  285.009741]      #func                 -237 __ipipe_unstall_root+0x10
> (__sched_text_start+0x3b0)
> [  285.035922]      #func                 -243 pick_next_task_rt+0x10
> (__sched_text_start+0x250)
> [  285.061329]      #func                 -247 check_spread+0x10
> (put_prev_task_fair+0x3c)
> [  285.085185]      #func                 -249 put_prev_task_fair+0x10
> (__sched_text_start+0x214)
> [  285.110850]      #func                 -254 calc_delta_mine+0x14
> (update_curr+0xcc)
> [  285.133672]      #func                 -257 update_curr+0x14
> (dequeue_task_fair+0x2c)
> [  285.157011]      #func                 -260 dequeue_task_fair+0x10
> (dequeue_task+0x124)
> [  285.180867]      #func                 -265 dequeue_task+0x14
> (deactivate_task+0x2c)
> [  285.203948]      #func                 -268 deactivate_task+0x10
> (__sched_text_start+0x1f8)
> [  285.228837]  |   #end     0x80000001   -271 __sched_text_start+0x18c
> (xnshadow_harden+0xa8)
> [  285.253753]  |   #begin   0x80000001   -273 __sched_text_start+0x174
> (xnshadow_harden+0xa8)
> [  285.278669]      #func                 -276 ipipe_check_context+0x10
> (__sched_text_start+0x144)
> [  285.304592]      #func                 -279 sched_clock+0x10
> (sched_clock_cpu+0x30)
> [  285.327415]      #func                 -281 sched_clock_cpu+0x10
> (__sched_text_start+0x134)
> [  285.352304]  |   #end     0x80000001   -283 __sched_text_start+0x128
> (xnshadow_harden+0xa8)
> [  285.377220]  |   +begin   0x80000001   -286 __sched_text_start+0x108
> (xnshadow_harden+0xa8)
> [  285.402135]      +func                 -288 ipipe_check_context+0x10
> (__sched_text_start+0x94)
> [  285.427801]      +func                 -290 preempt_schedule+0x10
> (__sched_text_start+0x78)
> [  285.452691]      +func                 -293 ipipe_check_context+0x10
> (__sched_text_start+0x60)
> [  285.478355]      +func                 -295 ipipe_check_context+0x10
> (__sched_text_start+0x24)
> [  285.504020]      +func                 -297 __sched_text_start+0x14
> (xnshadow_harden+0xa8)
> [  285.528653]      +func                 -300 preempt_schedule+0x10
> (__wake_up_sync+0xdc)
> [  285.552509]      +func                 -302 ipipe_check_context+0x10
> (__wake_up_sync+0xc4)
> [  285.577140]  |   +end     0x80000000   -304 __ipipe_unstall_root+0x64
> (__ipipe_restore_root+0x64)
> [  285.603580]  |   #begin   0x80000000   -306 __ipipe_unstall_root+0x34
> (__ipipe_restore_root+0x64)
> [  285.630021]      #func                 -308 __ipipe_unstall_root+0x10
> (__ipipe_restore_root+0x64)
> [  285.656461]      #func                 -311 __ipipe_restore_root+0x10
> (__wake_up_sync+0xbc)
> [  285.681351]      #func                 -313 preempt_schedule+0x10
> (try_to_wake_up+0x138)
> [  285.705466]      #func                 -315 ipipe_check_context+0x10
> (try_to_wake_up+0x120)
> [  285.730355]  |   #end     0x80000001   -318 __ipipe_restore_root+0x58
> (try_to_wake_up+0x118)
> [  285.755503]  |   #begin   0x80000001   -320 __ipipe_restore_root+0x38
> (try_to_wake_up+0x118)
> [  285.780689] invalid use of FPU in Xenomai context at 0x93e0
> [  285.797290] Xenomai: Switching display-340 to secondary mode after
> exception #5 from user-space at 0x93e0 (pid 342)
> [  285.829719] Xenomai: registered exported object dispsem-342 (semaphores)
> 
> Any idea about ?

Yes, it is the same problem as was posted a few days ago: the FPU
support for PXA is not implemented. So, you should apply the patch that
was posted a few days ago. The backtrace is due to the fact that we use
print_symbol, which is verboten in real-time context, this needs to be
fixed.

BUT, and that is a capital "but", be aware that when latency or any
other user-space real-time application will use FPU will in primary
mode, it will switch to secondary mode, which will induce big latencies.

So, if you do not want the high latencies, you are probably better off
compiling real-time applications with -msoft-float.


-- 
					    Gilles.


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-28 18:00 ` Gilles Chanteperdrix
@ 2009-08-28 18:04   ` Gilles Chanteperdrix
  2009-08-28 19:09     ` Felipe Castro
  0 siblings, 1 reply; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-28 18:04 UTC (permalink / raw)
  To: Felipe Castro; +Cc: xenomai

Gilles Chanteperdrix wrote:
> Felipe Castro wrote:
>> Hi ,
>>
>> I'm trying xenomai running on PXA270 Voipac module.
>> Acctually i have a problem when running the lantency test program.
>>
>> The module loads OK , but when i run latency program:
>>
>> [  110.874334] Xenomai: starting native API services.
>> [  282.865308] I-pipe: Detected illicit call from domain 'Xenomai'
>> [  282.865356]         into a service reserved for domain 'Linux' and below.
>> [  282.903226] [<c0023068>] (dump_stack+0x0/0x18) from [<c006cbcc>]
>> (ipipe_check_context+0xdc/0x100)
>> [  282.929809] [<c006caf0>] (ipipe_check_context+0x0/0x100) from
>> [<c0066168>] (module_address_lookup+0x34/0x108)
>> [  282.959374] [<c0066134>] (module_address_lookup+0x0/0x108) from
>> [<c00670e4>] (kallsyms_lookup+0x7c/0x80)
>> [  282.987650] [<c0067068>] (kallsyms_lookup+0x0/0x80) from [<c0067208>]
>> (sprint_symbol+0x38/0xb0)
>> [  283.013599] [<c00671d0>] (sprint_symbol+0x0/0xb0) from [<c00672a4>]
>> (__print_symbol+0x24/0x38)
>> [  283.039294]  r6:c03334f8 r5:c7035e24 r4:c02b5728
>> [  283.053066] [<c0067280>] (__print_symbol+0x0/0x38) from [<c007cfec>]
>> (xnpod_trap_fault+0xc8/0x258)
>> [  283.079818]  r5:c7040810 r4:c7035f40
>> [  283.090466] [<c007cf24>] (xnpod_trap_fault+0x0/0x258) from [<c0073b30>]
>> (xnarch_trap_fault+0x24/0x2c)
>> [  283.117967]  r6:c0330cc4 r5:c02f6c48 r4:c0332950
>> [  283.131742] [<c0073b0c>] (xnarch_trap_fault+0x0/0x2c) from [<c01dcd38>]
>> (exception_event+0x50/0x74)
>> [  283.158751] [<c01dcce8>] (exception_event+0x0/0x74) from [<c006bbac>]
>> (__ipipe_dispatch_event+0xdc/0x1e8)
>> [  283.187285]  r4:00000000
>> [  283.194805] [<c006bad0>] (__ipipe_dispatch_event+0x0/0x1e8) from
>> [<c001ee04>] (do_fpe+0x18/0x3c)
>> [  283.221016] I-pipe tracer log (100 points):
>> [  283.233469]  | +  func                    0 ipipe_trace_panic_freeze+0x10
>> (ipipe_check_context+0x5c)
>> [  283.260735]  | +  func                   -4 ipipe_check_context+0x10
>> (module_address_lookup+0x34)
>> [  283.287176]  | +  func                   -6 module_address_lookup+0x10
>> (kallsyms_lookup+0x7c)
>> [  283.312583]  | +  func                  -10 in_gate_area_no_task+0x10
>> (is_ksym_addr+0x34)
>> [  283.336956]  | +  func                  -13 is_ksym_addr+0x10
>> (kallsyms_lookup+0x38)
>> [  283.360036]  | +  func                  -15 kallsyms_lookup+0x14
>> (sprint_symbol+0x38)
>> [  283.383375]  | +  func                  -18 sprint_symbol+0x14
>> (__print_symbol+0x24)
>> [  283.406456]  | +  func                  -21 __print_symbol+0x14
>> (xnpod_trap_fault+0xc8)
>> [  283.430313]  | +  func                  -24 xnpod_trap_fault+0x14
>> (xnarch_trap_fault+0x24)
>> [  283.454943]  | +  func                  -27 xnarch_trap_fault+0x14
>> (exception_event+0x50)
>> [  283.479316]  | +  func                  -30 exception_event+0x10
>> (__ipipe_dispatch_event+0xdc)
>> [  283.504982]  | +  func                  -34 __ipipe_dispatch_event+0x14
>> (do_fpe+0x18)
>> [  283.528320]  | +  end     0x80000001    -45 __ipipe_dispatch_event+0x1c8
>> (__ipipe_syscall_root+0x80)
>> [  283.555562]  | +  begin   0x80000001    -48 __ipipe_dispatch_event+0x104
>> (__ipipe_syscall_root+0x80)
>> [  283.582778]  | +  end     0x80000000    -52
>> ipipe_unstall_pipeline_head+0x90 (xnshadow_harden+0x1a0)
>> [  283.610021]  | #  begin   0x80000000    -56
>> ipipe_unstall_pipeline_head+0x34 (xnshadow_harden+0x1a0)
>> [  283.637262]    #  func                  -58
>> ipipe_unstall_pipeline_head+0x10 (xnshadow_harden+0x1a0)
>> [  283.664477]    #  func                  -63 xnpod_switch_fpu+0x10
>> (xnshadow_harden+0x190)
>> [  283.688851]  | #  end     0x80000001    -66 __sched_text_start+0x6d0
>> (xnshadow_harden+0xa8)
>> [  283.713793]  | #  begin   0x80000001    -69 __sched_text_start+0x6b8
>> (xnshadow_harden+0xa8)
>> [  283.738707]  | #  end     0x80000000    -71 __sched_text_start+0x65c
>> (xnshadow_harden+0xa8)
>> [  283.763597]  | #  [  304] telnetd -1    -92 xnpod_schedule+0xb4
>> (xnpod_schedule_handler+0x54)
>> [  283.789056]  | #  func                  -95 xnpod_schedule+0x14
>> (xnpod_schedule_handler+0x54)
>> [  283.814463]  | #  func                  -98 xnpod_schedule_handler+0x10
>> (__ipipe_sync_stage+0x1b4)
>> [  283.841162]  | +  func                 -101 __ipipe_sync_stage+0x10
>> (ipipe_suspend_domain+0xa4)
>> [  283.867086]  | +  func                 -104 ipipe_suspend_domain+0x10
>> (__ipipe_walk_pipeline+0x74)
>> [  283.893783]  |   +func                 -108 __ipipe_walk_pipeline+0x10
>> (__ipipe_restore_pipeline_head+0xc4)
>> [  283.922809]  | * +func                 -111
>> __ipipe_restore_pipeline_head+0x10 (gatekeeper_thread+0x180)
>> [  283.951058]  | * +func                 -116 __ipipe_set_irq_pending+0x10
>> (__ipipe_dispatch_wired+0x7c)
>> [  283.978792]  | * +func                 -120 __ipipe_dispatch_wired+0x10
>> (__ipipe_handle_irq+0xa4)
>> [  284.005233]  | * +func                 -124 __ipipe_handle_irq+0x10
>> (ipipe_trigger_irq+0x7c)
>> [  284.030381]  | * +func                 -128 ipipe_trigger_irq+0x10
>> (xnpod_schedule+0x34)
>> [  284.054494]  | * +func                 -130 xnpod_schedule+0x14
>> (gatekeeper_thread+0x164)
>> [  284.078868]  | * +func                 -133 disengage_irq_shield+0x10
>> (gatekeeper_thread+0x160)
>> [  284.104792]  | * +[  342] display- 0   -142 xnpod_resume_thread+0x70
>> (gatekeeper_thread+0x15c)
>> [  284.130509]  | * +func                 -145 xnpod_resume_thread+0x14
>> (gatekeeper_thread+0x15c)
>> [  284.156173]  |   +begin   0x80000000   -147 gatekeeper_thread+0x140
>> (kthread+0x58)
>> [  284.178789]  |   +end     0x80000000   -150
>> __ipipe_restore_pipeline_head+0xd8 (rpi_pop+0x4cc)
>> [  284.204454]  | * +func                 -153
>> __ipipe_restore_pipeline_head+0x10 (rpi_pop+0x4cc)
>> [  284.230119]  |   +begin   0x80000000   -157 rpi_pop+0x38
>> (gatekeeper_thread+0x120)
>> [  284.252709]      +func                 -159 rpi_pop+0x14
>> (gatekeeper_thread+0x120)
>> [  284.275273]      +func                 -162 kthread_should_stop+0x10
>> (gatekeeper_thread+0xf8)
>> [  284.300680]      +func                 -165 ipipe_check_context+0x10
>> (__sched_text_start+0x750)
>> [  284.326603]      +func                 -168 finish_task_switch+0x10
>> (__sched_text_start+0x6e8)
>> [  284.352269]  |   +end     0x80000001   -170 __sched_text_start+0x6d0
>> (gatekeeper_thread+0xf4)
>> [  284.377701]  |   +begin   0x80000001   -173 __sched_text_start+0x6b8
>> (gatekeeper_thread+0xf4)
>> [  284.403133]  |   +end     0x80000000   -176 __sched_text_start+0x65c
>> (gatekeeper_thread+0xf4)
>> [  284.428565]  |   +func                 -180 ipipe_check_context+0x10
>> (__atomic_notifier_call_chain+0x68)
>> [  284.456841]  |   +func                 -182 iwmmxt_do+0x10
>> (notifier_call_chain+0x4c)
>> [  284.480180]  |   +func                 -185 nwfpe_notify+0x10
>> (notifier_call_chain+0x4c)
>> [  284.504321]  |   +func                 -188 notifier_call_chain+0x10
>> (__atomic_notifier_call_chain+0x5c)
>> [  284.532571]  |   +func                 -191 ipipe_check_context+0x10
>> (__atomic_notifier_call_chain+0x34)
>> [  284.560845]  |   +func                 -193
>> __atomic_notifier_call_chain+0x14 (atomic_notifier_call_chain+0x24)
>> [  284.590904]  |   +func                 -195
>> atomic_notifier_call_chain+0x14 (__switch_to+0x30)
>> [  284.616570]  |   +begin   0x80000000   -199 __sched_text_start+0x634
>> (xnshadow_harden+0xa8)
>> [  284.641486]  |   +end     0x80000001   -201 __sched_text_start+0x4a0
>> (xnshadow_harden+0xa8)
>> [  284.666375]  |   +begin   0x80000001   -204 __sched_text_start+0x484
>> (xnshadow_harden+0xa8)
>> [  284.691290]  |   +end     0x80000001   -206 __ipipe_dispatch_event+0x1c8
>> (__sched_text_start+0x44c)
>> [  284.718248]  |   +begin   0x80000001   -209 __ipipe_dispatch_event+0x104
>> (__sched_text_start+0x44c)
>> [  284.745206]  |   +end     0x80000000   -211
>> __ipipe_restore_pipeline_head+0xd8 (schedule_event+0xbb4)
>> [  284.772707]  | * +func                 -214
>> __ipipe_restore_pipeline_head+0x10 (schedule_event+0xbb4)
>> [  284.800180]  |   +begin   0x80000000   -216 schedule_event+0x6b0
>> (__ipipe_dispatch_event+0xdc)
>> [  284.825872]      +func                 -219 schedule_event+0x14
>> (__ipipe_dispatch_event+0xdc)
>> [  284.851278]  |   +end     0x80000001   -222 __ipipe_dispatch_event+0xc4
>> (__sched_text_start+0x44c)
>> [  284.878004]  |   +begin   0x80000001   -225 __ipipe_dispatch_event+0x40
>> (__sched_text_start+0x44c)
>> [  284.904727]      +func                 -227 __ipipe_dispatch_event+0x14
>> (__sched_text_start+0x44c)
>> [  284.931427]      +func                 -230 ipipe_check_context+0x10
>> (__sched_text_start+0x3c0)
>> [  284.957351]  |   +end     0x80000000   -232 __ipipe_unstall_root+0x64
>> (__sched_text_start+0x3b0)
>> [  284.983533]  |   #begin   0x80000000   -235 __ipipe_unstall_root+0x34
>> (__sched_text_start+0x3b0)
>> [  285.009741]      #func                 -237 __ipipe_unstall_root+0x10
>> (__sched_text_start+0x3b0)
>> [  285.035922]      #func                 -243 pick_next_task_rt+0x10
>> (__sched_text_start+0x250)
>> [  285.061329]      #func                 -247 check_spread+0x10
>> (put_prev_task_fair+0x3c)
>> [  285.085185]      #func                 -249 put_prev_task_fair+0x10
>> (__sched_text_start+0x214)
>> [  285.110850]      #func                 -254 calc_delta_mine+0x14
>> (update_curr+0xcc)
>> [  285.133672]      #func                 -257 update_curr+0x14
>> (dequeue_task_fair+0x2c)
>> [  285.157011]      #func                 -260 dequeue_task_fair+0x10
>> (dequeue_task+0x124)
>> [  285.180867]      #func                 -265 dequeue_task+0x14
>> (deactivate_task+0x2c)
>> [  285.203948]      #func                 -268 deactivate_task+0x10
>> (__sched_text_start+0x1f8)
>> [  285.228837]  |   #end     0x80000001   -271 __sched_text_start+0x18c
>> (xnshadow_harden+0xa8)
>> [  285.253753]  |   #begin   0x80000001   -273 __sched_text_start+0x174
>> (xnshadow_harden+0xa8)
>> [  285.278669]      #func                 -276 ipipe_check_context+0x10
>> (__sched_text_start+0x144)
>> [  285.304592]      #func                 -279 sched_clock+0x10
>> (sched_clock_cpu+0x30)
>> [  285.327415]      #func                 -281 sched_clock_cpu+0x10
>> (__sched_text_start+0x134)
>> [  285.352304]  |   #end     0x80000001   -283 __sched_text_start+0x128
>> (xnshadow_harden+0xa8)
>> [  285.377220]  |   +begin   0x80000001   -286 __sched_text_start+0x108
>> (xnshadow_harden+0xa8)
>> [  285.402135]      +func                 -288 ipipe_check_context+0x10
>> (__sched_text_start+0x94)
>> [  285.427801]      +func                 -290 preempt_schedule+0x10
>> (__sched_text_start+0x78)
>> [  285.452691]      +func                 -293 ipipe_check_context+0x10
>> (__sched_text_start+0x60)
>> [  285.478355]      +func                 -295 ipipe_check_context+0x10
>> (__sched_text_start+0x24)
>> [  285.504020]      +func                 -297 __sched_text_start+0x14
>> (xnshadow_harden+0xa8)
>> [  285.528653]      +func                 -300 preempt_schedule+0x10
>> (__wake_up_sync+0xdc)
>> [  285.552509]      +func                 -302 ipipe_check_context+0x10
>> (__wake_up_sync+0xc4)
>> [  285.577140]  |   +end     0x80000000   -304 __ipipe_unstall_root+0x64
>> (__ipipe_restore_root+0x64)
>> [  285.603580]  |   #begin   0x80000000   -306 __ipipe_unstall_root+0x34
>> (__ipipe_restore_root+0x64)
>> [  285.630021]      #func                 -308 __ipipe_unstall_root+0x10
>> (__ipipe_restore_root+0x64)
>> [  285.656461]      #func                 -311 __ipipe_restore_root+0x10
>> (__wake_up_sync+0xbc)
>> [  285.681351]      #func                 -313 preempt_schedule+0x10
>> (try_to_wake_up+0x138)
>> [  285.705466]      #func                 -315 ipipe_check_context+0x10
>> (try_to_wake_up+0x120)
>> [  285.730355]  |   #end     0x80000001   -318 __ipipe_restore_root+0x58
>> (try_to_wake_up+0x118)
>> [  285.755503]  |   #begin   0x80000001   -320 __ipipe_restore_root+0x38
>> (try_to_wake_up+0x118)
>> [  285.780689] invalid use of FPU in Xenomai context at 0x93e0
>> [  285.797290] Xenomai: Switching display-340 to secondary mode after
>> exception #5 from user-space at 0x93e0 (pid 342)
>> [  285.829719] Xenomai: registered exported object dispsem-342 (semaphores)
>>
>> Any idea about ?
> 
> Yes, it is the same problem as was posted a few days ago: the FPU
> support for PXA is not implemented. So, you should apply the patch that
> was posted a few days ago. The backtrace is due to the fact that we use
> print_symbol, which is verboten in real-time context, this needs to be
> fixed.
> 
> BUT, and that is a capital "but", be aware that when latency or any

other user-space real-time application which will use FPU while in
primary mode will switch to secondary mode, which will induce big latencies.

> So, if you do not want the high latencies, you are probably better off
> compiling real-time applications with -msoft-float.
> 
> 


-- 
					    Gilles.


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-28 18:04   ` Gilles Chanteperdrix
@ 2009-08-28 19:09     ` Felipe Castro
  2009-08-28 19:16       ` Gilles Chanteperdrix
  0 siblings, 1 reply; 10+ messages in thread
From: Felipe Castro @ 2009-08-28 19:09 UTC (permalink / raw)
  To: xenomai

[-- Attachment #1: Type: text/plain, Size: 13943 bytes --]

Well , i found the topic, but I'm using kernel 2.6.27 with xenomai 2.4.8 and
the code to be patched is a little bit different. I dont't know how to do ,
can you help me ?



On Fri, Aug 28, 2009 at 3:04 PM, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> Gilles Chanteperdrix wrote:
> > Felipe Castro wrote:
> >> Hi ,
> >>
> >> I'm trying xenomai running on PXA270 Voipac module.
> >> Acctually i have a problem when running the lantency test program.
> >>
> >> The module loads OK , but when i run latency program:
> >>
> >> [  110.874334] Xenomai: starting native API services.
> >> [  282.865308] I-pipe: Detected illicit call from domain 'Xenomai'
> >> [  282.865356]         into a service reserved for domain 'Linux' and
> below.
> >> [  282.903226] [<c0023068>] (dump_stack+0x0/0x18) from [<c006cbcc>]
> >> (ipipe_check_context+0xdc/0x100)
> >> [  282.929809] [<c006caf0>] (ipipe_check_context+0x0/0x100) from
> >> [<c0066168>] (module_address_lookup+0x34/0x108)
> >> [  282.959374] [<c0066134>] (module_address_lookup+0x0/0x108) from
> >> [<c00670e4>] (kallsyms_lookup+0x7c/0x80)
> >> [  282.987650] [<c0067068>] (kallsyms_lookup+0x0/0x80) from [<c0067208>]
> >> (sprint_symbol+0x38/0xb0)
> >> [  283.013599] [<c00671d0>] (sprint_symbol+0x0/0xb0) from [<c00672a4>]
> >> (__print_symbol+0x24/0x38)
> >> [  283.039294]  r6:c03334f8 r5:c7035e24 r4:c02b5728
> >> [  283.053066] [<c0067280>] (__print_symbol+0x0/0x38) from [<c007cfec>]
> >> (xnpod_trap_fault+0xc8/0x258)
> >> [  283.079818]  r5:c7040810 r4:c7035f40
> >> [  283.090466] [<c007cf24>] (xnpod_trap_fault+0x0/0x258) from
> [<c0073b30>]
> >> (xnarch_trap_fault+0x24/0x2c)
> >> [  283.117967]  r6:c0330cc4 r5:c02f6c48 r4:c0332950
> >> [  283.131742] [<c0073b0c>] (xnarch_trap_fault+0x0/0x2c) from
> [<c01dcd38>]
> >> (exception_event+0x50/0x74)
> >> [  283.158751] [<c01dcce8>] (exception_event+0x0/0x74) from [<c006bbac>]
> >> (__ipipe_dispatch_event+0xdc/0x1e8)
> >> [  283.187285]  r4:00000000
> >> [  283.194805] [<c006bad0>] (__ipipe_dispatch_event+0x0/0x1e8) from
> >> [<c001ee04>] (do_fpe+0x18/0x3c)
> >> [  283.221016] I-pipe tracer log (100 points):
> >> [  283.233469]  | +  func                    0
> ipipe_trace_panic_freeze+0x10
> >> (ipipe_check_context+0x5c)
> >> [  283.260735]  | +  func                   -4 ipipe_check_context+0x10
> >> (module_address_lookup+0x34)
> >> [  283.287176]  | +  func                   -6
> module_address_lookup+0x10
> >> (kallsyms_lookup+0x7c)
> >> [  283.312583]  | +  func                  -10 in_gate_area_no_task+0x10
> >> (is_ksym_addr+0x34)
> >> [  283.336956]  | +  func                  -13 is_ksym_addr+0x10
> >> (kallsyms_lookup+0x38)
> >> [  283.360036]  | +  func                  -15 kallsyms_lookup+0x14
> >> (sprint_symbol+0x38)
> >> [  283.383375]  | +  func                  -18 sprint_symbol+0x14
> >> (__print_symbol+0x24)
> >> [  283.406456]  | +  func                  -21 __print_symbol+0x14
> >> (xnpod_trap_fault+0xc8)
> >> [  283.430313]  | +  func                  -24 xnpod_trap_fault+0x14
> >> (xnarch_trap_fault+0x24)
> >> [  283.454943]  | +  func                  -27 xnarch_trap_fault+0x14
> >> (exception_event+0x50)
> >> [  283.479316]  | +  func                  -30 exception_event+0x10
> >> (__ipipe_dispatch_event+0xdc)
> >> [  283.504982]  | +  func                  -34
> __ipipe_dispatch_event+0x14
> >> (do_fpe+0x18)
> >> [  283.528320]  | +  end     0x80000001    -45
> __ipipe_dispatch_event+0x1c8
> >> (__ipipe_syscall_root+0x80)
> >> [  283.555562]  | +  begin   0x80000001    -48
> __ipipe_dispatch_event+0x104
> >> (__ipipe_syscall_root+0x80)
> >> [  283.582778]  | +  end     0x80000000    -52
> >> ipipe_unstall_pipeline_head+0x90 (xnshadow_harden+0x1a0)
> >> [  283.610021]  | #  begin   0x80000000    -56
> >> ipipe_unstall_pipeline_head+0x34 (xnshadow_harden+0x1a0)
> >> [  283.637262]    #  func                  -58
> >> ipipe_unstall_pipeline_head+0x10 (xnshadow_harden+0x1a0)
> >> [  283.664477]    #  func                  -63 xnpod_switch_fpu+0x10
> >> (xnshadow_harden+0x190)
> >> [  283.688851]  | #  end     0x80000001    -66 __sched_text_start+0x6d0
> >> (xnshadow_harden+0xa8)
> >> [  283.713793]  | #  begin   0x80000001    -69 __sched_text_start+0x6b8
> >> (xnshadow_harden+0xa8)
> >> [  283.738707]  | #  end     0x80000000    -71 __sched_text_start+0x65c
> >> (xnshadow_harden+0xa8)
> >> [  283.763597]  | #  [  304] telnetd -1    -92 xnpod_schedule+0xb4
> >> (xnpod_schedule_handler+0x54)
> >> [  283.789056]  | #  func                  -95 xnpod_schedule+0x14
> >> (xnpod_schedule_handler+0x54)
> >> [  283.814463]  | #  func                  -98
> xnpod_schedule_handler+0x10
> >> (__ipipe_sync_stage+0x1b4)
> >> [  283.841162]  | +  func                 -101 __ipipe_sync_stage+0x10
> >> (ipipe_suspend_domain+0xa4)
> >> [  283.867086]  | +  func                 -104 ipipe_suspend_domain+0x10
> >> (__ipipe_walk_pipeline+0x74)
> >> [  283.893783]  |   +func                 -108
> __ipipe_walk_pipeline+0x10
> >> (__ipipe_restore_pipeline_head+0xc4)
> >> [  283.922809]  | * +func                 -111
> >> __ipipe_restore_pipeline_head+0x10 (gatekeeper_thread+0x180)
> >> [  283.951058]  | * +func                 -116
> __ipipe_set_irq_pending+0x10
> >> (__ipipe_dispatch_wired+0x7c)
> >> [  283.978792]  | * +func                 -120
> __ipipe_dispatch_wired+0x10
> >> (__ipipe_handle_irq+0xa4)
> >> [  284.005233]  | * +func                 -124 __ipipe_handle_irq+0x10
> >> (ipipe_trigger_irq+0x7c)
> >> [  284.030381]  | * +func                 -128 ipipe_trigger_irq+0x10
> >> (xnpod_schedule+0x34)
> >> [  284.054494]  | * +func                 -130 xnpod_schedule+0x14
> >> (gatekeeper_thread+0x164)
> >> [  284.078868]  | * +func                 -133 disengage_irq_shield+0x10
> >> (gatekeeper_thread+0x160)
> >> [  284.104792]  | * +[  342] display- 0   -142 xnpod_resume_thread+0x70
> >> (gatekeeper_thread+0x15c)
> >> [  284.130509]  | * +func                 -145 xnpod_resume_thread+0x14
> >> (gatekeeper_thread+0x15c)
> >> [  284.156173]  |   +begin   0x80000000   -147 gatekeeper_thread+0x140
> >> (kthread+0x58)
> >> [  284.178789]  |   +end     0x80000000   -150
> >> __ipipe_restore_pipeline_head+0xd8 (rpi_pop+0x4cc)
> >> [  284.204454]  | * +func                 -153
> >> __ipipe_restore_pipeline_head+0x10 (rpi_pop+0x4cc)
> >> [  284.230119]  |   +begin   0x80000000   -157 rpi_pop+0x38
> >> (gatekeeper_thread+0x120)
> >> [  284.252709]      +func                 -159 rpi_pop+0x14
> >> (gatekeeper_thread+0x120)
> >> [  284.275273]      +func                 -162 kthread_should_stop+0x10
> >> (gatekeeper_thread+0xf8)
> >> [  284.300680]      +func                 -165 ipipe_check_context+0x10
> >> (__sched_text_start+0x750)
> >> [  284.326603]      +func                 -168 finish_task_switch+0x10
> >> (__sched_text_start+0x6e8)
> >> [  284.352269]  |   +end     0x80000001   -170 __sched_text_start+0x6d0
> >> (gatekeeper_thread+0xf4)
> >> [  284.377701]  |   +begin   0x80000001   -173 __sched_text_start+0x6b8
> >> (gatekeeper_thread+0xf4)
> >> [  284.403133]  |   +end     0x80000000   -176 __sched_text_start+0x65c
> >> (gatekeeper_thread+0xf4)
> >> [  284.428565]  |   +func                 -180 ipipe_check_context+0x10
> >> (__atomic_notifier_call_chain+0x68)
> >> [  284.456841]  |   +func                 -182 iwmmxt_do+0x10
> >> (notifier_call_chain+0x4c)
> >> [  284.480180]  |   +func                 -185 nwfpe_notify+0x10
> >> (notifier_call_chain+0x4c)
> >> [  284.504321]  |   +func                 -188 notifier_call_chain+0x10
> >> (__atomic_notifier_call_chain+0x5c)
> >> [  284.532571]  |   +func                 -191 ipipe_check_context+0x10
> >> (__atomic_notifier_call_chain+0x34)
> >> [  284.560845]  |   +func                 -193
> >> __atomic_notifier_call_chain+0x14 (atomic_notifier_call_chain+0x24)
> >> [  284.590904]  |   +func                 -195
> >> atomic_notifier_call_chain+0x14 (__switch_to+0x30)
> >> [  284.616570]  |   +begin   0x80000000   -199 __sched_text_start+0x634
> >> (xnshadow_harden+0xa8)
> >> [  284.641486]  |   +end     0x80000001   -201 __sched_text_start+0x4a0
> >> (xnshadow_harden+0xa8)
> >> [  284.666375]  |   +begin   0x80000001   -204 __sched_text_start+0x484
> >> (xnshadow_harden+0xa8)
> >> [  284.691290]  |   +end     0x80000001   -206
> __ipipe_dispatch_event+0x1c8
> >> (__sched_text_start+0x44c)
> >> [  284.718248]  |   +begin   0x80000001   -209
> __ipipe_dispatch_event+0x104
> >> (__sched_text_start+0x44c)
> >> [  284.745206]  |   +end     0x80000000   -211
> >> __ipipe_restore_pipeline_head+0xd8 (schedule_event+0xbb4)
> >> [  284.772707]  | * +func                 -214
> >> __ipipe_restore_pipeline_head+0x10 (schedule_event+0xbb4)
> >> [  284.800180]  |   +begin   0x80000000   -216 schedule_event+0x6b0
> >> (__ipipe_dispatch_event+0xdc)
> >> [  284.825872]      +func                 -219 schedule_event+0x14
> >> (__ipipe_dispatch_event+0xdc)
> >> [  284.851278]  |   +end     0x80000001   -222
> __ipipe_dispatch_event+0xc4
> >> (__sched_text_start+0x44c)
> >> [  284.878004]  |   +begin   0x80000001   -225
> __ipipe_dispatch_event+0x40
> >> (__sched_text_start+0x44c)
> >> [  284.904727]      +func                 -227
> __ipipe_dispatch_event+0x14
> >> (__sched_text_start+0x44c)
> >> [  284.931427]      +func                 -230 ipipe_check_context+0x10
> >> (__sched_text_start+0x3c0)
> >> [  284.957351]  |   +end     0x80000000   -232 __ipipe_unstall_root+0x64
> >> (__sched_text_start+0x3b0)
> >> [  284.983533]  |   #begin   0x80000000   -235 __ipipe_unstall_root+0x34
> >> (__sched_text_start+0x3b0)
> >> [  285.009741]      #func                 -237 __ipipe_unstall_root+0x10
> >> (__sched_text_start+0x3b0)
> >> [  285.035922]      #func                 -243 pick_next_task_rt+0x10
> >> (__sched_text_start+0x250)
> >> [  285.061329]      #func                 -247 check_spread+0x10
> >> (put_prev_task_fair+0x3c)
> >> [  285.085185]      #func                 -249 put_prev_task_fair+0x10
> >> (__sched_text_start+0x214)
> >> [  285.110850]      #func                 -254 calc_delta_mine+0x14
> >> (update_curr+0xcc)
> >> [  285.133672]      #func                 -257 update_curr+0x14
> >> (dequeue_task_fair+0x2c)
> >> [  285.157011]      #func                 -260 dequeue_task_fair+0x10
> >> (dequeue_task+0x124)
> >> [  285.180867]      #func                 -265 dequeue_task+0x14
> >> (deactivate_task+0x2c)
> >> [  285.203948]      #func                 -268 deactivate_task+0x10
> >> (__sched_text_start+0x1f8)
> >> [  285.228837]  |   #end     0x80000001   -271 __sched_text_start+0x18c
> >> (xnshadow_harden+0xa8)
> >> [  285.253753]  |   #begin   0x80000001   -273 __sched_text_start+0x174
> >> (xnshadow_harden+0xa8)
> >> [  285.278669]      #func                 -276 ipipe_check_context+0x10
> >> (__sched_text_start+0x144)
> >> [  285.304592]      #func                 -279 sched_clock+0x10
> >> (sched_clock_cpu+0x30)
> >> [  285.327415]      #func                 -281 sched_clock_cpu+0x10
> >> (__sched_text_start+0x134)
> >> [  285.352304]  |   #end     0x80000001   -283 __sched_text_start+0x128
> >> (xnshadow_harden+0xa8)
> >> [  285.377220]  |   +begin   0x80000001   -286 __sched_text_start+0x108
> >> (xnshadow_harden+0xa8)
> >> [  285.402135]      +func                 -288 ipipe_check_context+0x10
> >> (__sched_text_start+0x94)
> >> [  285.427801]      +func                 -290 preempt_schedule+0x10
> >> (__sched_text_start+0x78)
> >> [  285.452691]      +func                 -293 ipipe_check_context+0x10
> >> (__sched_text_start+0x60)
> >> [  285.478355]      +func                 -295 ipipe_check_context+0x10
> >> (__sched_text_start+0x24)
> >> [  285.504020]      +func                 -297 __sched_text_start+0x14
> >> (xnshadow_harden+0xa8)
> >> [  285.528653]      +func                 -300 preempt_schedule+0x10
> >> (__wake_up_sync+0xdc)
> >> [  285.552509]      +func                 -302 ipipe_check_context+0x10
> >> (__wake_up_sync+0xc4)
> >> [  285.577140]  |   +end     0x80000000   -304 __ipipe_unstall_root+0x64
> >> (__ipipe_restore_root+0x64)
> >> [  285.603580]  |   #begin   0x80000000   -306 __ipipe_unstall_root+0x34
> >> (__ipipe_restore_root+0x64)
> >> [  285.630021]      #func                 -308 __ipipe_unstall_root+0x10
> >> (__ipipe_restore_root+0x64)
> >> [  285.656461]      #func                 -311 __ipipe_restore_root+0x10
> >> (__wake_up_sync+0xbc)
> >> [  285.681351]      #func                 -313 preempt_schedule+0x10
> >> (try_to_wake_up+0x138)
> >> [  285.705466]      #func                 -315 ipipe_check_context+0x10
> >> (try_to_wake_up+0x120)
> >> [  285.730355]  |   #end     0x80000001   -318 __ipipe_restore_root+0x58
> >> (try_to_wake_up+0x118)
> >> [  285.755503]  |   #begin   0x80000001   -320 __ipipe_restore_root+0x38
> >> (try_to_wake_up+0x118)
> >> [  285.780689] invalid use of FPU in Xenomai context at 0x93e0
> >> [  285.797290] Xenomai: Switching display-340 to secondary mode after
> >> exception #5 from user-space at 0x93e0 (pid 342)
> >> [  285.829719] Xenomai: registered exported object dispsem-342
> (semaphores)
> >>
> >> Any idea about ?
> >
> > Yes, it is the same problem as was posted a few days ago: the FPU
> > support for PXA is not implemented. So, you should apply the patch that
> > was posted a few days ago. The backtrace is due to the fact that we use
> > print_symbol, which is verboten in real-time context, this needs to be
> > fixed.
> >
> > BUT, and that is a capital "but", be aware that when latency or any
>
> other user-space real-time application which will use FPU while in
> primary mode will switch to secondary mode, which will induce big
> latencies.
>
> > So, if you do not want the high latencies, you are probably better off
> > compiling real-time applications with -msoft-float.
> >
> >
>
>
> --
>                                            Gilles.
>

[-- Attachment #2: Type: text/html, Size: 16711 bytes --]

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-28 19:09     ` Felipe Castro
@ 2009-08-28 19:16       ` Gilles Chanteperdrix
  2009-08-31 14:53         ` Felipe Castro
  0 siblings, 1 reply; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-28 19:16 UTC (permalink / raw)
  To: Felipe Castro; +Cc: xenomai

[-- Attachment #1: Type: text/plain, Size: 311 bytes --]

Felipe Castro wrote:
> Well , i found the topic, but I'm using kernel 2.6.27 with xenomai 2.4.8 and
> the code to be patched is a little bit different. I dont't know how to do ,
> can you help me ?

The code has not changed, but I think my patch was mangled, please try
the attached one.


-- 
					    Gilles.

[-- Attachment #2: pxa-disable-fpu.diff --]
[-- Type: text/x-diff, Size: 1202 bytes --]

diff --git a/ksrc/arch/arm/switch.S b/ksrc/arch/arm/switch.S
index a7c3dba..384f2cd 100644
--- a/ksrc/arch/arm/switch.S
+++ b/ksrc/arch/arm/switch.S
@@ -102,10 +102,12 @@ ENTRY(rthal_thread_switch)
     strex   r5, r4, [ip]                    @ Clear exclusive monitor
 #endif
 #endif
+#if 0	
 #if defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_IWMMXT)
     mra     r4, r5, acc0
     stmia   ip, {r4, r5}
 #endif
+#endif
 #if defined(CONFIG_HAS_TLS_REG)
     mcr     p15, 0, r3, c13, c0, 3          @ set TLS register
 #elif !defined(CONFIG_TLS_REG_EMUL)
@@ -129,6 +131,7 @@ ENTRY(rthal_thread_switch)
 #endif
     VFPFMXR FPEXC, r4
 #endif
+#if 0
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18) &&  defined(CONFIG_IWMMXT)
     bl      iwmmxt_task_switch
 #endif
@@ -137,13 +140,16 @@ ENTRY(rthal_thread_switch)
     ldmib   r4, {r4, r5}
     mar     acc0, r4, r5
 #endif
+#endif
     add	    r4, r2, #TI_CPU_SAVE
+#if 0	
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 18) && defined(CONFIG_IWMMXT)
     mov	    r5, r0
     mov     r0, r2
     bl	    iwmmxt_task_switch
     mov	    r0, r5
-#endif	
+#endif
+#endif
     ldmia   r4, {r4 - sl, fp, sp, pc}       @ Load all regs saved previously
 
 /*

^ permalink raw reply related	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-28 19:16       ` Gilles Chanteperdrix
@ 2009-08-31 14:53         ` Felipe Castro
  2009-08-31 15:10           ` Gilles Chanteperdrix
  0 siblings, 1 reply; 10+ messages in thread
From: Felipe Castro @ 2009-08-31 14:53 UTC (permalink / raw)
  To: xenomai

[-- Attachment #1: Type: text/plain, Size: 2440 bytes --]

hi !

I apllied the patch that you sent me, but there are some weird!
When i run latency program the result is:

root@domain.hid$ /usr/xenomai/bin/latency
== Sampling period: 100 us
== Test mode: periodic user-mode task
== All results in microseconds
warming up...
RTT|  00:00:02  (periodic user-mode task, 100 us period, priority 99)
RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat
worst
RTD|      83.384|     146.769|     189.538|    1803|      83.384|
189.538


And than the program just freeze, and the kernel trace:

[  780.136217] Xenomai: Switching display-343 to secondary mode after
exception #5 from user-space at 0x93e0 (pid 345)
[  780.169608] Xenomai: registered exported object dispsem-345 (semaphores)
[  783.284333] Xenomai: watchdog triggered -- killing runaway thread
'sampling-343'

I did a software to test, like this :

#include <stdio.h>
#include <sys/mman.h>
#include <native/task.h>
#include <native/timer.h>


void periodic_serialRead (void *arg);


#define TASK_PRIORITY     99     //Priority
#define TASK_MODE    0
#define TASK_STACKSIZE    0

#define TASK_PERIOD    69444 // 69,4us

RT_TASK td;

void periodic_serialRead (void *arg){
    int i1=0;
    unsigned long over1;
    int err1 =
rt_task_set_periodic(NULL,TM_NOW,rt_timer_ns2ticks(TASK_PERIOD));

    for(;;){
        err1 = rt_task_wait_period(&over1);
        if(err1)break;
        printf(" Task Active - Reading -> %d\n",i1++);

    }
}

int main (int argc, char *argv[]){



    int err=0;

    mlockall(MCL_CURRENT|MCL_FUTURE);

    err=rt_task_spawn(&td,
"serialRead",TASK_STACKSIZE,TASK_PRIORITY,TASK_MODE,&periodic_serialRead,NULL);


    if(!err){
        printf("Press any key to finish ... \n ");
        getchar();

        rt_task_delete(&td);

    }

    return 0;
}

if i set a long time interval for my task , for example 500ms it works fine,
but if i put a small value like 70us , the software just freeze.

Can you help ?

Thanks in advance.

On Fri, Aug 28, 2009 at 4:16 PM, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> Felipe Castro wrote:
> > Well , i found the topic, but I'm using kernel 2.6.27 with xenomai 2.4.8
> and
> > the code to be patched is a little bit different. I dont't know how to do
> ,
> > can you help me ?
>
> The code has not changed, but I think my patch was mangled, please try
> the attached one.
>
>
> --
>                                             Gilles.
>

[-- Attachment #2: Type: text/html, Size: 3160 bytes --]

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-31 14:53         ` Felipe Castro
@ 2009-08-31 15:10           ` Gilles Chanteperdrix
  2009-08-31 18:36             ` Felipe Castro
       [not found]             ` <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>
  0 siblings, 2 replies; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-31 15:10 UTC (permalink / raw)
  To: Felipe Castro; +Cc: xenomai

Felipe Castro wrote:
> hi !
> 
> I apllied the patch that you sent me, but there are some weird!
> When i run latency program the result is:
> 
> root@domain.hid$ /usr/xenomai/bin/latency
> == Sampling period: 100 us
> == Test mode: periodic user-mode task
> == All results in microseconds
> warming up...
> RTT|  00:00:02  (periodic user-mode task, 100 us period, priority 99)
> RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat
> worst
> RTD|      83.384|     146.769|     189.538|    1803|      83.384|    
> 189.538

100us is to short a period for an ARM without FCSE enabled. Actually it
is also too short for an ARM with FCSE. Look at the latency: you are
asking a 100us period whereas the latency is 150us on average, don't you
see the problem?

You can try a period of 1ms, it is more reasonable. If you want periods
of 70us, you can not use an ARM.

> 
> 
> And than the program just freeze, and the kernel trace:
> 
> [  780.136217] Xenomai: Switching display-343 to secondary mode after
> exception #5 from user-space at 0x93e0 (pid 345)

That is another problem which should be fixed in the next Xenomai
release, which should happen real soon now.

-- 
                                          Gilles



^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-core] [PXA + Xenomai] Latency program
  2009-08-31 15:10           ` Gilles Chanteperdrix
@ 2009-08-31 18:36             ` Felipe Castro
       [not found]             ` <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>
  1 sibling, 0 replies; 10+ messages in thread
From: Felipe Castro @ 2009-08-31 18:36 UTC (permalink / raw)
  To: xenomai

[-- Attachment #1: Type: text/plain, Size: 1788 bytes --]

Ok i got ,

When i tried to run latency with 3 ms, it works but i received the message
[149.437671] Xenomai: Switching display-321 to secondary modo after
exception #5 from user-spcae at 0x9588 (pid 232)

So , if i put my test software posted in the last message, to run with 3ms
period task, the software freeze.
I can run this software only with 10ms period time, what i'm doing wrong ?

On Mon, Aug 31, 2009 at 12:10 PM, Gilles Chanteperdrix <
gilles.chanteperdrix@xenomai.org> wrote:

> Felipe Castro wrote:
> > hi !
> >
> > I apllied the patch that you sent me, but there are some weird!
> > When i run latency program the result is:
> >
> > root@domain.hid$ /usr/xenomai/bin/latency
> > == Sampling period: 100 us
> > == Test mode: periodic user-mode task
> > == All results in microseconds
> > warming up...
> > RTT|  00:00:02  (periodic user-mode task, 100 us period, priority 99)
> > RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat
> > worst
> > RTD|      83.384|     146.769|     189.538|    1803|      83.384|
> > 189.538
>
> 100us is to short a period for an ARM without FCSE enabled. Actually it
> is also too short for an ARM with FCSE. Look at the latency: you are
> asking a 100us period whereas the latency is 150us on average, don't you
> see the problem?
>
> You can try a period of 1ms, it is more reasonable. If you want periods
> of 70us, you can not use an ARM.
>
> >
> >
> > And than the program just freeze, and the kernel trace:
> >
> > [  780.136217] Xenomai: Switching display-343 to secondary mode after
> > exception #5 from user-space at 0x93e0 (pid 345)
>
> That is another problem which should be fixed in the next Xenomai
> release, which should happen real soon now.
>
> --
>                                           Gilles
>
>

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^ permalink raw reply	[flat|nested] 10+ messages in thread

[parent not found: <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>]

* Re: [Xenomai-help] [Xenomai-core] [PXA + Xenomai] Latency program
       [not found]             ` <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>
@ 2009-08-31 18:38               ` Gilles Chanteperdrix
  2009-08-31 18:48               ` Gilles Chanteperdrix
  1 sibling, 0 replies; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-31 18:38 UTC (permalink / raw)
  To: Felipe Castro; +Cc: Xenomai help

Felipe Castro wrote:
> Ok i got ,
> 
> When i tried to run latency with 3 ms, it works but i received the message
> [149.437671] Xenomai: Switching display-321 to secondary modo after
> exception #5 from user-spcae at 0x9588 (pid 232)
> 
> So , if i put my test software posted in the last message, to run with 3ms
> period task, the software freeze.
> I can run this software only with 10ms period time, what i'm doing wrong ?

Read my answer again.

Please do not drop the mailing list from our discussions. And
xenomai-help is more apropriate than xenomai-core.

-- 
					    Gilles.


^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xenomai-help] [Xenomai-core] [PXA + Xenomai] Latency program
       [not found]             ` <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>
  2009-08-31 18:38               ` [Xenomai-help] " Gilles Chanteperdrix
@ 2009-08-31 18:48               ` Gilles Chanteperdrix
  1 sibling, 0 replies; 10+ messages in thread
From: Gilles Chanteperdrix @ 2009-08-31 18:48 UTC (permalink / raw)
  To: Felipe Castro

Felipe Castro wrote:
> Ok i got ,
> 
> When i tried to run latency with 3 ms, it works but i received the message
> [149.437671] Xenomai: Switching display-321 to secondary modo after
> exception #5 from user-spcae at 0x9588 (pid 232)

You have compiled latency with FPU support. Contarily to what I told
you, it can not work. You MUST compile real-time applications with
-msoft-float.


-- 
					    Gilles.



^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2009-08-31 18:48 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-08-28 17:50 [Xenomai-core] [PXA + Xenomai] Latency program Felipe Castro
2009-08-28 18:00 ` Gilles Chanteperdrix
2009-08-28 18:04   ` Gilles Chanteperdrix
2009-08-28 19:09     ` Felipe Castro
2009-08-28 19:16       ` Gilles Chanteperdrix
2009-08-31 14:53         ` Felipe Castro
2009-08-31 15:10           ` Gilles Chanteperdrix
2009-08-31 18:36             ` Felipe Castro
     [not found]             ` <7a15153d0908311135o753de66ex90f835f14c506e9b@domain.hid>
2009-08-31 18:38               ` [Xenomai-help] " Gilles Chanteperdrix
2009-08-31 18:48               ` Gilles Chanteperdrix

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