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

[Chip Bennett]

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

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.)

Chip

przemolicc at poczta.fm wrote:
> Anyone know what happened to fbt:ip:tcp_xchg:entry probe ?
>
> przemol
>
> On Thu, Jan 11, 2007 at 12:09:55PM +0100, przemolicc at poczta.fm wrote:
>   
>> Hello,
>>
>> I am trying to use one of scripts from Dtrace toolkit and get:
>> bash-3.00# dtrace -l|wc -l
>>    47351
>> bash-3.00# cat /etc/release 
>>                         Solaris 10 6/06 s10x_u2wos_09a X86
>>            Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
>>                         Use is subject to license terms.
>>                              Assembled 09 June 2006
>> bash-3.00# uname -a
>> SunOS e2 5.10 Generic_118855-19 i86pc i386 i86pc
>> bash-3.00# ./tcpsnoop.d
>> dtrace: failed to compile script ./tcpsnoop.d: line 233: probe description fbt:ip:tcp_xchg:entry does not match any probes
>>
>> Indeed, there is no such probe:
>> bash-3.00# dtrace -l|wc -l
>>    47351
>> bash-3.00# dtrace -l|grep tcp_xchg
>>
>> On the other x86 system I get it:
>> # cat /etc/release
>>                         Solaris 10 6/06 s10x_u2wos_09a X86
>>            Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
>>                         Use is subject to license terms.
>>                              Assembled 09 June 2006
>> # uname -a
>> SunOS bolek 5.10 Generic_118855-19 i86pc i386 i86pc
>> # 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
>>
>> Can anyone explain me what's going on ?
>>
>> przemol
>>
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