cddl/contrib/dtracetoolkit/Examples/putnexts_example.txt

   1 The following is an example of the putnexts.d script.
   2
   3
   4 When investigating the operation of kernel streams, it can be extreamly
   5 useful to trace who (which stack trace) is calling putnext to who (the
   6 kernel modele). This script does that,
   7
   8 # putnexts.d
   9 dtrace: script './putnexts.d' matched 1 probe
  10 ^C
  11
  12   bufmod
  13               bufmod`sbrput+0xb9
  14               unix`putnext+0x1b7
  15               pts`ptswput+0x1e1
  16               unix`putnext+0x1b7
  17               ptem`ptemwput+0x22f
  18                 1
  19   ip
  20               ip`ip_fanout_proto+0x4d2
  21               ip`ip_proto_input+0x616
  22               ip`ip_fanout_proto_again+0x160
  23               ip`ip_proto_input+0x530
  24               ip`ip_rput+0x50d
  25                 1
  26   ip
  27               ip`ip_wput_ipsec_out+0x60a
  28               ip`ipsec_out_process+0x322
  29               ip`ip_wput_ire+0x18d0
  30               ip`ip_output+0x70a
  31               ip`ip_wput+0x14
  32                 1
  33   ip
  34               ip`ip_wput_ire+0x17d1
  35               ip`ip_output+0x70a
  36               ip`tcp_send_data+0x68c
  37               ip`tcp_ack_timer+0xb0
  38               ip`tcp_timer_handler+0x1d
  39                 1
  40   ip
  41               ip`ip_udp_input+0x4e4
  42               ip`ip_rput+0x540
  43               unix`putnext+0x1b7
  44               gld`gld_recv_tagged+0xed
  45               gld`gld_recv+0x10
  46                 1
  47   ldterm
  48               genunix`putnextctl1+0x52
  49               ldterm`ldterm_dosig+0x7b
  50               ldterm`ldtermrput+0x6fe
  51               unix`putnext+0x1b7
  52               ptem`ptemrput+0xff
  53                 1
  54   ldterm
  55               ldterm`ldterm_ioctl_reply+0x93
  56               ldterm`ldtermrput+0x186
  57               genunix`qdrain_syncq+0x68
  58               genunix`drain_syncq+0x1a4
  59               genunix`putnext_tail+0x88
  60                 1
  61   ldterm
  62               ldterm`ldtermrput+0x12a
  63               unix`putnext+0x1b7
  64               ptem`ptemrput+0xff
  65               genunix`qdrain_syncq+0x68
  66               genunix`drain_syncq+0x1a4
  67                 1
  68   ldterm
  69               ldterm`ldterm_dosig+0x16f
  70               ldterm`ldtermrput+0x6fe
  71               unix`putnext+0x1b7
  72               ptem`ptemrput+0xff
  73               unix`putnext+0x1b7
  74                 1
  75   ldterm
  76               genunix`putnextctl1+0x52
  77               ldterm`ldterm_dosig+0x124
  78               ldterm`ldtermrput+0x6fe
  79               unix`putnext+0x1b7
  80               ptem`ptemrput+0xff
  81                 1
  82   ldterm
  83               ldterm`ldterm_do_ioctl+0xd8b
  84               ldterm`ldtermwmsg+0x41
  85               ldterm`ldtermwput+0x8e
  86               unix`putnext+0x1b7
  87               ttcompat`ttcompat_do_ioctl+0x425
  88                 1
  89   ldterm
  90               genunix`putnextctl1+0x52
  91               ldterm`ldterm_dosig+0xe3
  92               ldterm`ldtermrput+0x6fe
  93               unix`putnext+0x1b7
  94               ptem`ptemrput+0xff
  95                 1
  96   ptem
  97               genunix`qreply+0x23
  98               ptem`ptemwmsg+0x2b9
  99               ptem`ptemwput+0xe1
 100               unix`putnext+0x1b7
 101               ldterm`ldterm_do_ioctl+0xd8b
 102                 1
 103   ptem
 104               ptem`ptemwput+0x22f
 105               genunix`qdrain_syncq+0x68
 106               genunix`drain_syncq+0x1a4
 107               genunix`putnext_tail+0x88
 108               unix`putnext+0x38e
 109                 1
 110   ptem
 111               ptem`ptemrput+0xff
 112               genunix`qdrain_syncq+0x68
 113               genunix`drain_syncq+0x1a4
 114               genunix`putnext_tail+0x88
 115               unix`putnext+0x38e
 116                 1
 117   ptem
 118               ptem`ptemwmsg+0x44d
 119               ptem`ptemwput+0xe1
 120               genunix`qdrain_syncq+0x68
 121               genunix`drain_syncq+0x1a4
 122               genunix`putnext_tail+0x88
 123                 1
 124   ptm
 125               pts`ptswsrv+0x7c
 126               genunix`runservice+0x2a
 127               genunix`queue_service+0x30
 128               genunix`stream_service+0x69
 129               genunix`taskq_d_thread+0x8a
 130                 1
 131   ptm
 132               pts`ptswput+0x1e1
 133               unix`putnext+0x1b7
 134               ptem`ptemwput+0x22f
 135               genunix`qdrain_syncq+0x68
 136               genunix`drain_syncq+0x1a4
 137                 1
 138   pts
 139               genunix`qreply+0x23
 140               pts`ptswput+0x201
 141               unix`putnext+0x1b7
 142               ptem`ptemwput+0x22f
 143               genunix`qdrain_syncq+0x68
 144                 1
 145   strwhead
 146               genunix`qreply+0x23
 147               genunix`strrput_nondata+0x22d
 148               genunix`strrput+0x256
 149               unix`putnext+0x1b7
 150               ttcompat`ttcompatrput+0x1d
 151                 1
 152   strwhead
 153               genunix`strdoioctl+0x30d
 154               genunix`strioctl+0x6ae
 155               specfs`spec_ioctl+0x48
 156               genunix`fop_ioctl+0x1e
 157               genunix`ioctl+0x199
 158                 1
 159   tcp
 160               ip`tcp_rput_data+0x2221
 161               ip`tcp_input+0x39
 162               ip`squeue_enter+0x1bf
 163               ip`ip_tcp_input+0x9f8
 164               ip`ip_rput+0x583
 165                 1
 166   ttcompat
 167               ttcompat`ttcompat_ioctl_ack+0x398
 168               ttcompat`ttcompatrput+0x39
 169               genunix`qdrain_syncq+0x68
 170               genunix`drain_syncq+0x1a4
 171               genunix`putnext_tail+0x88
 172                 1
 173   ttcompat
 174               ttcompat`ttcompatrput+0x1d
 175               unix`putnext+0x1b7
 176               ldterm`ldtermrput+0x12a
 177               unix`putnext+0x1b7
 178               ptem`ptemrput+0xff
 179                 1
 180   ttcompat
 181               ttcompat`ttcompatrput+0x1d
 182               unix`putnext+0x1b7
 183               genunix`putnextctl1+0x52
 184               ldterm`ldterm_dosig+0x124
 185               ldterm`ldtermrput+0x6fe
 186                 1
 187   ttcompat
 188               ttcompat`ttcompatwput+0x32
 189               genunix`qdrain_syncq+0x68
 190               genunix`drain_syncq+0x1a4
 191               genunix`putnext_tail+0x88
 192               unix`putnext+0x38e
 193                 1
 194   ttcompat
 195               ttcompat`ttcompat_do_ioctl+0x425
 196               ttcompat`ttcompatwput+0x152
 197               unix`putnext+0x1b7
 198               genunix`strdoioctl+0x30d
 199               genunix`strioctl+0x6ae
 200                 1
 201   ttcompat
 202               ttcompat`ttcompatrput+0x1d
 203               unix`putnext+0x1b7
 204               genunix`putnextctl1+0x52
 205               ldterm`ldterm_dosig+0xe3
 206               ldterm`ldtermrput+0x6fe
 207                 1
 208   tun
 209               tun`tun_rdata_v4+0x58c
 210               tun`tun_rproc+0x256
 211               tun`tun_rput+0x23
 212               unix`putnext+0x1b7
 213               ip`ip_fanout_proto+0x4d2
 214                 1
 215   tun
 216               tun`tun_wputnext_v4+0x1f8
 217               tun`tun_wproc_mdata+0x71
 218               tun`tun_wproc+0xdf
 219               tun`tun_wput+0x23
 220               unix`putnext+0x1b7
 221                 1
 222   udp
 223               udp`udp_rput+0x975
 224               unix`putnext+0x1b7
 225               ip`ip_udp_input+0x4e4
 226               ip`ip_rput+0x540
 227               unix`putnext+0x1b7
 228                 1
 229   conskbd
 230               genunix`qreply+0x23
 231               conskbd`conskbd_mux_upstream_msg+0x24f
 232               conskbd`conskbd_lqs_ack_complete+0x65
 233               conskbd`conskbdlrput+0x9d
 234               unix`putnext+0x1b7
 235                 2
 236   conskbd
 237               conskbd`conskbdlwserv+0x2d
 238               genunix`runservice+0x2a
 239               genunix`queue_service+0x30
 240               genunix`stream_service+0x69
 241               genunix`taskq_d_thread+0x8a
 242                 2
 243   kb8042
 244               genunix`qreply+0x23
 245               genunix`miocack+0x2a
 246               kb8042`kb8042_ioctlmsg+0x281
 247               kb8042`kb8042_wsrv+0xcb
 248               genunix`runservice+0x2a
 249                 2
 250   strwhead
 251               genunix`strdoioctl+0x30d
 252               genunix`strioctl+0x587
 253               specfs`spec_ioctl+0x48
 254               genunix`fop_ioctl+0x1e
 255               genunix`ioctl+0x199
 256                 2
 257   consms
 258               consms`consmslrput+0x15a
 259               unix`putnext+0x1b7
 260               vuid3ps2`vuid3ps2_putnext+0x94
 261               vuid3ps2`sendButtonEvent+0x58
 262               vuid3ps2`vuid3ps2+0x8ee
 263                 4
 264   vuid3ps2
 265               vuid3ps2`vuid3ps2_putnext+0x94
 266               vuid3ps2`sendButtonEvent+0x58
 267               vuid3ps2`vuid3ps2+0x8ee
 268               vuid3ps2`vuidmice_rsrv+0x69
 269               genunix`runservice+0x2a
 270                 4
 271   ip
 272               ip`tcp_send_data+0x55d
 273               ip`tcp_ack_timer+0xb0
 274               ip`tcp_timer_handler+0x1d
 275               ip`squeue_drain+0xbb
 276               ip`squeue_worker+0xeb
 277                10
 278   ip
 279               ip`tcp_send_data+0x55d
 280               ip`tcp_rput_data+0x259e
 281               ip`squeue_enter+0x1bf
 282               ip`ip_tcp_input+0xcfb
 283               ip`ip_rput+0x583
 284                11
 285   ip
 286               ip`ip_fanout_udp_conn+0x14b
 287               ip`ip_fanout_udp+0x373
 288               ip`ip_wput_local+0x16f
 289               ip`ip_wput_ire+0x1436
 290               ip`ip_output+0x70a
 291                14
 292   strwhead
 293               genunix`strput+0x168
 294               genunix`strputmsg+0x1d5
 295               genunix`msgio+0x142
 296               genunix`putmsg+0x6e
 297               unix`sys_sysenter+0xdc
 298                14
 299   timod
 300               timod`timodwput+0xea
 301               unix`putnext+0x1b7
 302               genunix`strput+0x168
 303               genunix`strputmsg+0x1d5
 304               genunix`msgio+0x142
 305                14
 306   timod
 307               timod`timodrput+0xa9
 308               unix`putnext+0x1b7
 309               udp`udp_rput+0x975
 310               unix`putnext+0x1b7
 311               ip`ip_fanout_udp_conn+0x14b
 312                14
 313   udp
 314               udp`udp_rput+0x975
 315               unix`putnext+0x1b7
 316               ip`ip_fanout_udp_conn+0x14b
 317               ip`ip_fanout_udp+0x373
 318               ip`ip_wput_local+0x16f
 319                14
 320   udp
 321               udp`udp_wput+0x378
 322               unix`putnext+0x1b7
 323               timod`timodwput+0xea
 324               unix`putnext+0x1b7
 325               genunix`strput+0x168
 326                14
 327   bufmod
 328               bufmod`sbsendit+0x5a
 329               bufmod`sbclosechunk+0x2e
 330               bufmod`sbrput+0xee
 331               genunix`qdrain_syncq+0x68
 332               genunix`drain_syncq+0x1a4
 333                21
 334   conskbd
 335               kbtrans`kbtrans_queueevent+0x5c
 336               kbtrans`kbtrans_keyreleased+0x3d
 337               kbtrans`kbtrans_untrans_keyreleased_raw+0x10
 338               kbtrans`kbtrans_processkey+0x20
 339               kbtrans`kbtrans_streams_key+0x95
 340                22
 341   kb8042
 342               kbtrans`kbtrans_queueevent+0x5c
 343               kbtrans`kbtrans_keyreleased+0x3d
 344               kbtrans`kbtrans_untrans_keyreleased_raw+0x10
 345               kbtrans`kbtrans_processkey+0x20
 346               kbtrans`kbtrans_streams_key+0x95
 347                22
 348   ldterm
 349               ldterm`ldterm_msg_upstream+0x2c
 350               ldterm`vmin_satisfied+0x5e
 351               ldterm`ldterm_dononcanon+0x230
 352               ldterm`ldtermrmsg+0x252
 353               ldterm`ldtermrput+0x7e9
 354                22
 355   ttcompat
 356               ttcompat`ttcompatrput+0x1d
 357               unix`putnext+0x1b7
 358               ldterm`ldterm_msg_upstream+0x2c
 359               ldterm`vmin_satisfied+0x5e
 360               ldterm`ldterm_dononcanon+0x230
 361                22
 362   bufmod
 363               bufmod`sbwput+0x33
 364               unix`putnext+0x1b7
 365               genunix`strput+0x168
 366               genunix`strwrite+0x151
 367               specfs`spec_write+0x4e
 368                23
 369   ptem
 370               ptem`ptemrput+0xff
 371               unix`putnext+0x1b7
 372               ptm`ptmwsrv+0x90
 373               genunix`runservice+0x2a
 374               genunix`queue_service+0x30
 375                23
 376   pts
 377               ptm`ptmwsrv+0x90
 378               genunix`runservice+0x2a
 379               genunix`queue_service+0x30
 380               genunix`stream_runservice+0x96
 381               genunix`strput+0x171
 382                23
 383   conskbd
 384               kbtrans`kbtrans_queueevent+0x5c
 385               kbtrans`kbtrans_queuepress+0x5f
 386               kbtrans`kbtrans_untrans_keypressed_raw+0x36
 387               kbtrans`kbtrans_processkey+0x30
 388               kbtrans`kbtrans_streams_key+0x95
 389                24
 390   kb8042
 391               kbtrans`kbtrans_queueevent+0x5c
 392               kbtrans`kbtrans_queuepress+0x5f
 393               kbtrans`kbtrans_untrans_keypressed_raw+0x36
 394               kbtrans`kbtrans_processkey+0x30
 395               kbtrans`kbtrans_streams_key+0x95
 396                24
 397   ip
 398               ip`tcp_send_data+0x55d
 399               ip`tcp_output+0x562
 400               ip`squeue_enter+0x1bf
 401               ip`tcp_wput+0x234
 402               unix`putnext+0x1b7
 403                32
 404   ldterm
 405               ldterm`ldtermwmsg+0x100
 406               ldterm`ldtermwput+0x8e
 407               unix`putnext+0x1b7
 408               ttcompat`ttcompatwput+0x32
 409               unix`putnext+0x1b7
 410                36
 411   ptem
 412               ptem`ptemwmsg+0x44d
 413               ptem`ptemwput+0xe1
 414               unix`putnext+0x1b7
 415               ldterm`ldtermwmsg+0x100
 416               ldterm`ldtermwput+0x8e
 417                36
 418   ptm
 419               pts`ptswsrv+0x7c
 420               genunix`runservice+0x2a
 421               genunix`queue_service+0x30
 422               genunix`stream_runservice+0x96
 423               genunix`strput+0x171
 424                36
 425   ttcompat
 426               ttcompat`ttcompatwput+0x32
 427               unix`putnext+0x1b7
 428               genunix`strput+0x168
 429               genunix`strwrite+0x151
 430               specfs`spec_write+0x4e
 431                36
 432   tcp
 433               ip`tcp_rput_data+0x2221
 434               ip`squeue_enter+0x1bf
 435               ip`ip_tcp_input+0xcfb
 436               ip`ip_rput+0x583
 437               unix`putnext+0x1b7
 438                40
 439   rtls
 440               gld`gld_recv_tagged+0xed
 441               gld`gld_recv+0x10
 442               rtls`rtls_receive+0x18f
 443               rtls`rtls_gld_intr+0x133
 444               gld`gld_intr+0x1e
 445                46
 446   consms
 447               consms`consmslrput+0x15a
 448               unix`putnext+0x1b7
 449               vuid3ps2`vuid3ps2_putnext+0x94
 450               vuid3ps2`vuid3ps2+0x82b
 451               vuid3ps2`vuidmice_rsrv+0x69
 452                59
 453   strwhead
 454               genunix`strput+0x168
 455               genunix`strwrite+0x151
 456               specfs`spec_write+0x4e
 457               genunix`fop_write+0x1b
 458               genunix`write+0x29a
 459                59
 460   vuid3ps2
 461               vuid3ps2`vuid3ps2_putnext+0x94
 462               vuid3ps2`vuid3ps2+0x82b
 463               vuid3ps2`vuidmice_rsrv+0x69
 464               genunix`runservice+0x2a
 465               genunix`queue_service+0x30
 466                59
 467   consms
 468               consms`consmslrput+0x15a
 469               unix`putnext+0x1b7
 470               vuid3ps2`vuid3ps2_putnext+0x94
 471               vuid3ps2`vuid3ps2+0x809
 472               vuid3ps2`vuidmice_rsrv+0x69
 473                77
 474   vuid3ps2
 475               vuid3ps2`vuid3ps2_putnext+0x94
 476               vuid3ps2`vuid3ps2+0x809
 477               vuid3ps2`vuidmice_rsrv+0x69
 478               genunix`runservice+0x2a
 479               genunix`queue_service+0x30
 480                77
 481   strwhead
 482               genunix`strput+0x168
 483               genunix`strwrite+0x151
 484               sockfs`socktpi_write+0xcb
 485               genunix`fop_write+0x1b
 486               genunix`writev+0x308
 487               108
 488   rtls
 489               gld`gld_passon+0x9e
 490               gld`gld_sendup+0xfc
 491               gld`gld_recv_tagged+0x15f
 492               gld`gld_recv+0x10
 493               rtls`rtls_receive+0x18f
 494               124
 495   strwhead
 496               genunix`strput+0x168
 497               genunix`strwrite+0x151
 498               sockfs`socktpi_write+0xcb
 499               genunix`fop_write+0x1b
 500               genunix`write+0x29a
 501               138
 502   tl
 503               tl`tl_wput_data_ser+0x5e
 504               genunix`serializer_exec+0x1d
 505               genunix`serializer_enter+0x81
 506               tl`tl_serializer_enter+0x40
 507               tl`tl_wput+0x1c7
 508               214
 509   mouse8042
 510               mouse8042`mouse8042_intr+0x68
 511               i8042`i8042_intr+0xa6
 512               unix`intr_thread+0x107
 513               261
 514
 515 Highlights of the above output include,
 516
 517 - gld calling putnext to rtls (my laptop network device driver)
 518 - ip receive path calling putnext to tcp
 519 - tcp_send_data() calling putnext to ip
 520