[u]

[..]
  1. u_char
  2. u_int
  3. u_long
  4. u_short
  5. uch
  6. udp_check
  7. udp_close
  8. udp_connect
  9. udp_err
  10. udp_header
  11. udp_ioctl
  12. udp_loopback
  13. udp_rcv
  14. udp_read
  15. udp_recvfrom
  16. udp_select
  17. udp_send_check
  18. udp_sendto
  19. udp_write
  20. uid_t
  21. uint
  22. ulcolor
  23. ulg
  24. ulong
  25. ultrastor_abort
  26. ultrastor_biosparam
  27. ultrastor_detect
  28. ultrastor_info
  29. ultrastor_interrupt
  30. ultrastor_queuecommand
  31. ultrastor_reset
  32. ultrastor_sg_list
  33. umode_t
  34. unalt
  35. unblank_screen
  36. uncaps
  37. unchar
  38. unctrl
  39. underline
  40. unexpected_floppy_interrupt
  41. unexpected_hd_interrupt
  42. unix_data_alloc
  43. unix_data_deref
  44. unix_data_lookup
  45. unix_data_ref
  46. unix_proto_accept
  47. unix_proto_bind
  48. unix_proto_connect
  49. unix_proto_create
  50. unix_proto_data
  51. unix_proto_dup
  52. unix_proto_getname
  53. unix_proto_getsockopt
  54. unix_proto_init
  55. unix_proto_ioctl
  56. unix_proto_listen
  57. unix_proto_read
  58. unix_proto_recv
  59. unix_proto_recvfrom
  60. unix_proto_release
  61. unix_proto_select
  62. unix_proto_send
  63. unix_proto_sendto
  64. unix_proto_setsockopt
  65. unix_proto_shutdown
  66. unix_proto_socketpair
  67. unix_proto_write
  68. unixify_text_buffer
  69. unlock_buffer
  70. unlock_creation
  71. unlock_fat
  72. unlock_inode
  73. unlock_it
  74. unlock_skb
  75. unlock_super
  76. unlshift
  77. unmap_page_range
  78. unrshift
  79. unzip
  80. update_attr
  81. update_screen
  82. update_timeout
  83. updcrc
  84. usage
  85. user
  86. user_i387_struct
  87. ush
  88. ushort
  89. ustat
  90. utimbuf
[..]