[dtrace-discuss] fbt:ip:tcp_xchg:entry does not exists

[przemolicc at poczta.fm]

On Mon, Jan 15, 2007 at 09:54:04AM -0600, Chip Bennett wrote:
> Being an fbt probe, and there has to be function of that name in the 
> kernel, what do you get from each system for:
> 
>     /usr/ccs/bin/nm /dev/ksyms | grep tcp_xchg

Both servers are Solaris 10 6/06 s10x_u2wos:

server _without_ tcp_xchg (servername: e2 - 64bit AMD Opteron):

bash-3.00# /usr/ccs/bin/nm /dev/ksyms | grep tcp_xchg
[14872]	|18446744073441173472|          34|FUNC |LOCL |0    |ABS |tcp_xchg
[8206]	|18446744073437902160|          34|FUNC |LOCL |0    |ABS |tcp_xchg
bash-3.00# dtrace -l|grep tcp_xchg
bash-3.00# 


server with tcp_xchg (servername: bolek - 32bit):
bash-3.00# /usr/ccs/bin/nm /dev/ksyms | grep tcp_xchg
[10128] |4273276023|      52|FUNC |LOCL |0    |ABS    |tcp_xchg
[14903] |4192498854|      52|FUNC |LOCL |0    |ABS    |tcp_xchg
bash-3.00# dtrace -l|grep tcp_xchg
25995        fbt                ip                          tcp_xchg entry
25996        fbt                ip                          tcp_xchg return
36350        fbt               nca                          tcp_xchg entry
36351        fbt               nca                          tcp_xchg return
bash-3.00# 

> You also might compare the outputs of modinfo on each system.  Could 
> there have been a patch that eliminated that function name?  (yea, I 
> know: that's unlikely.)

The diff between the two (left=e2, right=32bit bolek):
1,2d0
< FX (Fixed priority sched class)
< FX_DPTBL (Fixed priority dispatch table)
10,11d7
< aes (AES Kernel SW Provider 1.8)
< aggr (Link Aggregation MAC)
16,19d11
< autofs (AUTOFS syscall (32-bit))
< autofs (AUTOFS syscall)
< autofs (filesystem for autofs)
< bge (BCM579x driver v0.48)
21,22d12
< blowfish (Blowfish Kernel SW Provider 1.9)
< bmc (BMC 1.0)
24a15
> c2audit (C2 system call)
33d23
< cpc (32-bit cpc sampling system call)
36d25
< cpu.AuthenticAMD.15 (AMD Athlon64/Opteron C
44,45d32
< des (DES Kernel SW Provider 1.22)
< des (des encryption)
50d36
< doorfs (32-bit door syscalls)
55d40
< elfexec (32-bit exec module for elf)
56a42
> elxl (3Com 90XX LAN driver 1.34)
60,61d45
< fcp (SunFC FCP v20060831-1.109)
< fcsm (Sun FC SAN Management v20060831)
65d48
< fp (SunFC Port v20060831-1.71)
71,72d53
< hid (USB HID Client Driver 1.36)
< hidparser (HID PARSER 1.13)
82,83d62
< inst_sync (32-bit instance binding syscall)
< inst_sync (instance binding syscall)
88d66
< ipc (common ipc code)
90d67
< ippctl (IP Policy Configuration Driver )
103d79
< klmmod (lock mgr common module)
119d94
< mc-amd (Memory Controller for AMD proce)
123c98
< md_hotspares (Solaris Volume Manager hot sp
---
> md_hotspares (Solaris Volume Manager hot spar)
132,133c107
< msgsys (32-bit System V message facilit)
< msgsys (System V message facility)
---
> mouse8042 (PS/2 Mouse 1.43, 05/06/01)
138d111
< nfs (NFS syscall, client, and common)
143,144d115
< nge (nVidia 1Gb Ethernet 1.3)
< npe (Host to PCIe nexus driver 1.3)
150c121,122
< pcbe.AuthenticAMD.15 (AMD Performance Count
---
> pcbe.GenuineIntel.15 (Pentium 4 Performance Counter
> pci (host to PCI nexus driver 1.65)
153d124
< pcie_pci (PCIe to PCI nexus driver 1.3)
159d129
< pipe (32-bit pipe(2) syscall)
164d133
< portfs (32-bit event ports syscalls)
169d137
< pset (32-bit pset(2) syscall)
177d144
< qlc (SunFC Qlogic FCA v20060630-2.16)
181d147
< rpcmod (32-bit RPC syscall)
196,198d161
< semsys (32-bit System V semaphore facil)
< semsys (System V semaphore facility)
< ses (SCSI Enclosure Services Driver )
201,202d163
< shmsys (32-bit System V shared memory)
< shmsys (System V shared memory)
210d170
< st (SCSI tape Driver 1.243)
234d193
< usb_mid (USB Multi Interface Driver 1.38)
236,237d194
< usbkbm (USB keyboard streams 1.34)
< usbms (USB mouse streams 1.18)
241a199
> vuid3ps2 (mouse events to vuid events)


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