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  1. root@rpi2:~# cat /proc/ipipe/trace/frozen
  2. I-pipe frozen back-tracing service on 3.8.13-ipipe/ipipe release #3
  3. ------------------------------------------------------------
  4. CPU: 0, Freeze: 3625760 cycles, Trace Points: 100 (+10)
  5. Calibrated minimum trace-point overhead: 0.000 us
  6.  
  7. +----- Hard IRQs ('|': locked)
  8. |+-- Xenomai
  9. ||+- Linux ('*': domain stalled, '+': current, '#': current+stalled)
  10. ||| +---------- Delay flag ('+': > 1 us, '!': > 10 us)
  11. ||| | +- NMI noise ('N')
  12. ||| | |
  13. Type User Val. Time Delay Function (Parent)
  14. :| #func -49 0.000 __ipipe_grab_irq+0x10 (__irq_svc+0x4c)
  15. :| #begin 0x00000020 -49 0.500 __ipipe_grab_irq+0x24 (__irq_svc+0x4c)
  16. :| #func -48 1.000 __ipipe_dispatch_irq+0x10 (__ipipe_grab_irq+0x48)
  17. :| #func -47 0.500 __ipipe_ack_irq+0x10 (__ipipe_dispatch_irq+0x1fc)
  18. :| #func -47 1.000 __ipipe_ack_level_irq+0x10 (__ipipe_ack_irq+0x1c)
  19. :| #func -46 0.500 armctrl_mask_irq+0x10 (__ipipe_ack_level_irq+0x4c)
  20. :| #func -45 0.500 irq_get_irq_data+0x10 (armctrl_mask_irq+0x24)
  21. :| #func -45 0.500 armctrl_mask_irq+0x10 (__ipipe_ack_level_irq+0x30)
  22. :| #func -44 0.500 irq_get_irq_data+0x10 (armctrl_mask_irq+0x24)
  23. :| #func -44+ 1.500 __ipipe_set_irq_pending+0x10 (__ipipe_dispatch_irq+0x16c)
  24. :| #func -42 0.500 __ipipe_do_sync_pipeline+0x10 (__ipipe_dispatch_irq+0x1b8)
  25. :| #end 0x00000020 -42 0.000 __ipipe_grab_irq+0x50 (__irq_svc+0x4c)
  26. :| #func -42 0.500 __ipipe_exit_irq+0x10 (__ipipe_grab_irq+0x58)
  27. :| #func -41 0.500 __ipipe_check_root_interruptible+0x10 (__irq_svc+0xb0)
  28. :| #func -41 0.500 __ipipe_bugon_irqs_enabled+0x10 (__ipipe_fast_svc_irq_exit+0x4)
  29. :| #end 0x90000000 -40 0.000 __ipipe_fast_svc_irq_exit+0x18 (__ipipe_trace+0x0)
  30. : #func -40 0.500 ipipe_unstall_root+0x10 (DWC_MODIFY_REG32+0x98)
  31. :| #begin 0x80000000 -40 0.500 ipipe_unstall_root+0x68 (DWC_MODIFY_REG32+0x98)
  32. :| #func -39 0.500 ipipe_root_only+0x10 (ipipe_unstall_root+0x24)
  33. :| +func -39 1.000 __ipipe_do_sync_stage+0x14 (ipipe_unstall_root+0x70)
  34. :| #end 0x80000000 -38 0.500 __ipipe_do_sync_stage+0x208 (ipipe_unstall_root+0x70)
  35. : #func -37 0.500 __ipipe_do_IRQ+0x10 (__ipipe_do_sync_stage+0x1e4)
  36. : #func -37 0.500 handle_IRQ+0x10 (__ipipe_do_IRQ+0x1c)
  37. : #func -36 0.500 irq_enter+0x10 (handle_IRQ+0x28)
  38. : #func -36 0.000 rcu_irq_enter+0x10 (irq_enter+0x24)
  39. :| #begin 0x80000001 -36 1.000 rcu_irq_enter+0xa8 (irq_enter+0x24)
  40. :| #end 0x80000001 -35 0.500 rcu_irq_enter+0xc0 (irq_enter+0x24)
  41. : #func -34 0.000 ipipe_root_only+0x10 (irq_enter+0x50)
  42. : #func -34 1.000 generic_handle_irq+0x10 (handle_IRQ+0x40)
  43. : #func -33 0.000 handle_level_irq+0x10 (generic_handle_irq+0x2c)
  44. : #func -33 1.000 ipipe_root_only+0x10 (handle_level_irq+0x24)
  45. : #func -32 0.000 handle_irq_event+0x10 (handle_level_irq+0x8c)
  46. : #func -32 0.500 ipipe_root_only+0x10 (handle_irq_event+0x38)
  47. : #func -32 1.000 handle_irq_event_percpu+0x14 (handle_irq_event+0x74)
  48. : #func -31 0.500 dwc_otg_common_irq+0x10 (handle_irq_event_percpu+0x124)
  49. : #func -30 0.500 dwc_otg_handle_common_intr+0x14 (dwc_otg_common_irq+0x1c)
  50. : #func -30 0.500 DWC_READ_REG32+0x10 (dwc_otg_handle_common_intr+0x2c)
  51. : #func -29 0.500 dwc_otg_is_device_mode+0x10 (dwc_otg_handle_common_intr+0x38)
  52. : #func -29 0.500 DWC_READ_REG32+0x10 (dwc_otg_is_device_mode+0x20)
  53. : #func -28 0.500 DWC_SPINLOCK+0x10 (dwc_otg_handle_common_intr+0x50)
  54. : #func -28 1.000 ipipe_root_only+0x10 (DWC_SPINLOCK+0x18)
  55. : #func -27 0.000 dwc_otg_is_device_mode+0x10 (dwc_otg_handle_common_intr+0x30c)
  56. : #func -27 0.500 DWC_READ_REG32+0x10 (dwc_otg_is_device_mode+0x20)
  57. : #func -26 0.500 DWC_READ_REG32+0x10 (dwc_otg_handle_common_intr+0x328)
  58. : #func -26 0.500 DWC_READ_REG32+0x10 (dwc_otg_handle_common_intr+0x338)
  59. :| #begin 0x80000001 -25 0.500 dwc_otg_handle_common_intr+0xbf0 (dwc_otg_common_irq+0x1c)
  60. :| #end 0x80000001 -25 0.500 dwc_otg_handle_common_intr+0xc08 (dwc_otg_common_irq+0x1c)
  61. :| #begin 0x80000001 -24 0.500 dwc_otg_handle_common_intr+0xc34 (dwc_otg_common_irq+0x1c)
  62. :| #end 0x80000001 -24 0.500 dwc_otg_handle_common_intr+0xc48 (dwc_otg_common_irq+0x1c)
  63. : #func -23 1.000 DWC_READ_REG32+0x10 (dwc_otg_handle_common_intr+0x3b8)
  64. : #func -22 0.500 DWC_WRITE_REG32+0x10 (dwc_otg_handle_common_intr+0x5a0)
  65. : #func -22 0.500 DWC_SPINUNLOCK+0x10 (dwc_otg_handle_common_intr+0xcc)
  66. : #func -21 1.000 ipipe_root_only+0x10 (DWC_SPINUNLOCK+0x18)
  67. : #func -20 0.000 dwc_otg_pcd_irq+0x10 (handle_irq_event_percpu+0x124)
  68. : #func -20 0.500 dwc_otg_pcd_handle_intr+0x10 (dwc_otg_pcd_irq+0x1c)
  69. : #func -20 0.500 dwc_otg_is_device_mode+0x10 (dwc_otg_pcd_handle_intr+0x30)
  70. : #func -19 1.000 DWC_READ_REG32+0x10 (dwc_otg_is_device_mode+0x20)
  71. : #func -18 0.500 usb_hcd_irq+0x14 (handle_irq_event_percpu+0x124)
  72. :| #begin 0x80000001 -18 0.500 usb_hcd_irq+0x94 (handle_irq_event_percpu+0x124)
  73. :| #end 0x80000001 -17 0.500 usb_hcd_irq+0xac (handle_irq_event_percpu+0x124)
  74. : #func -17 0.500 dwc_otg_hcd_irq+0x10 (usb_hcd_irq+0x68)
  75. : #func -16 0.500 dwc_otg_hcd_handle_intr+0x10 (dwc_otg_hcd_irq+0x1c)
  76. : #func -16 0.500 DWC_READ_REG32+0x10 (dwc_otg_hcd_handle_intr+0x28)
  77. : #func -15 0.500 DWC_READ_REG32+0x10 (dwc_otg_hcd_handle_intr+0x38)
  78. : #func -15 0.000 DWC_SPINLOCK+0x10 (dwc_otg_hcd_handle_intr+0x54)
  79. : #func -15 0.500 ipipe_root_only+0x10 (DWC_SPINLOCK+0x18)
  80. : #func -14 0.500 dwc_otg_is_host_mode+0x10 (dwc_otg_hcd_handle_intr+0x5c)
  81. : #func -14 0.500 DWC_READ_REG32+0x10 (dwc_otg_is_host_mode+0x20)
  82. :| #begin 0x80000001 -13 0.500 dwc_otg_hcd_handle_intr+0x1c8 (dwc_otg_hcd_irq+0x1c)
  83. :| #end 0x80000001 -13 0.500 dwc_otg_hcd_handle_intr+0x1e0 (dwc_otg_hcd_irq+0x1c)
  84. : #func -12 0.500 ipipe_unstall_root+0x10 (dwc_otg_hcd_handle_intr+0x134)
  85. :| #begin 0x80000000 -12 0.000 ipipe_unstall_root+0x68 (dwc_otg_hcd_handle_intr+0x134)
  86. :| #func -12 0.500 ipipe_root_only+0x10 (ipipe_unstall_root+0x24)
  87. :| +end 0x80000000 -11 0.500 ipipe_unstall_root+0x54 (dwc_otg_hcd_handle_intr+0x134)
  88. : +func -11 0.500 DWC_READ_REG32+0x10 (dwc_otg_hcd_handle_intr+0x158)
  89. : +func -10 0.500 dwc_otg_hcd_handle_port_intr+0x14 (dwc_otg_hcd_handle_intr+0x26c)
  90. : +func -10 0.500 DWC_READ_REG32+0x10 (dwc_otg_hcd_handle_port_intr+0x2c)
  91. : +func -9 0.500 DWC_READ_REG32+0x10 (dwc_otg_hcd_handle_port_intr+0x40)
  92. : +func -9 0.500 DWC_TIMER_CANCEL+0x10 (dwc_otg_hcd_handle_port_intr+0x9c)
  93. : +func -8 1.000 del_timer+0x14 (DWC_TIMER_CANCEL+0x1c)
  94. : +func -7 0.000 DWC_WRITE_REG32+0x10 (dwc_otg_hcd_handle_port_intr+0xf4)
  95. : +func -7 0.500 DWC_MODIFY_REG32+0x10 (dwc_otg_hcd_handle_intr+0x284)
  96. :| +begin 0x80000001 -7 0.500 DWC_MODIFY_REG32+0xa4 (dwc_otg_hcd_handle_intr+0x284)
  97. :| #end 0x80000001 -6 0.500 DWC_MODIFY_REG32+0xb8 (dwc_otg_hcd_handle_intr+0x284)
  98. :| #begin 0x80000001 -6 0.000 DWC_MODIFY_REG32+0xc4 (dwc_otg_hcd_handle_intr+0x284)
  99. :| #end 0x80000001 -6 0.500 DWC_MODIFY_REG32+0xd8 (dwc_otg_hcd_handle_intr+0x284)
  100. : #func -5 0.500 ipipe_unstall_root+0x10 (DWC_MODIFY_REG32+0x98)
  101. :| #begin 0x80000000 -5 0.500 ipipe_unstall_root+0x68 (DWC_MODIFY_REG32+0x98)
  102. :| #func -4 0.000 ipipe_root_only+0x10 (ipipe_unstall_root+0x24)
  103. :| +end 0x80000000 -4 0.500 ipipe_unstall_root+0x54 (DWC_MODIFY_REG32+0x98)
  104. :| +begin 0x80000001 -4 0.500 dwc_otg_hcd_handle_intr+0x1a4 (dwc_otg_hcd_irq+0x1c)
  105. :| #end 0x80000001 -3 0.500 dwc_otg_hcd_handle_intr+0x1bc (dwc_otg_hcd_irq+0x1c)
  106. : #func -3 0.500 DWC_WRITE_REG32+0x10 (dwc_otg_hcd_handle_intr+0x1f0)
  107. : #func -2 0.500 ipipe_unstall_root+0x10 (dwc_otg_hcd_handle_intr+0xbc)
  108. :| #begin 0x80000000 -2 0.000 ipipe_unstall_root+0x68 (dwc_otg_hcd_handle_intr+0xbc)
  109. :| #func -2 0.500 ipipe_root_only+0x10 (ipipe_unstall_root+0x24)
  110. :| +end 0x80000000 -1 0.500 ipipe_unstall_root+0x54 (dwc_otg_hcd_handle_intr+0xbc)
  111. : +func -1 0.500 DWC_SPINUNLOCK+0x10 (dwc_otg_hcd_handle_intr+0xec)
  112. : +func 0 0.500 ipipe_root_only+0x10 (DWC_SPINUNLOCK+0x18)
  113. < +freeze 0x00000000 0 1.000 ipipe_trace_freeze+0x20 (handle_irq_event_percpu+0x150)
  114. +func 1 0.500 warn_slowpath_fmt+0x18 (handle_irq_event_percpu+0x334)
  115. +func 1 0.500 warn_slowpath_common+0x10 (warn_slowpath_fmt+0x40)
  116. +func 2 0.500 printk+0x18 (warn_slowpath_common+0x30)
  117. | +begin 0x80000001 2 0.500 printk+0x3c (warn_slowpath_common+0x30)
  118. | +end 0x80000001 3 0.500 printk+0xec (warn_slowpath_common+0x30)
  119. +func 3 0.500 vprintk_emit+0x14 (printk+0x118)
  120. | +begin 0x80000001 4 0.500 vprintk_emit+0x324 (printk+0x118)
  121. | #end 0x80000001 4 0.500 vprintk_emit+0x33c (printk+0x118)
  122. #func 5 3.000 ipipe_root_only+0x10 (vprintk_emit+0x14c)
  123. #func 8 0.000 log_store+0x14 (vprintk_emit+0x234)
  124. root@rpi2:~#
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