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From: John-Mark Gurney <jmg@funkthat.com>
Subject: Re: amd64/185290: Dtrace does not work on -stable/10
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The following reply was made to PR amd64/185290; it has been noted by GNATS.

From: John-Mark Gurney <jmg@funkthat.com>
To: Robert David <robert.david.public@gmail.com>
Cc: freebsd-gnats-submit@freebsd.org
Subject: Re: amd64/185290: Dtrace does not work on -stable/10
Date: Mon, 30 Dec 2013 09:28:49 -0800

 Robert David wrote this message on Mon, Dec 30, 2013 at 12:00 +0000:
 > >Description:
 > All simple dtrace oneliners I tryed has the same output:
 > 
 > root@notebook ~ # dtrace -n 'syscall:::entry { @num[execname] = count(); }'
 > dtrace: invalid probe specifier syscall:::entry { @num[execname] = count(); }: "/usr/lib/dtrace/io.d", line 43: operator -> cannot be applied to a forward declaration: no struct devstat definition is available
 
 Did you do a:
 kldload dtraceall
 
 on the system?  Just dtrace.ko isn't enough to have dtrace work..  What
 does dtrace -l say?  If you just have dtrace.ko loaded, you'll see
 something like:
 # dtrace -l
    ID   PROVIDER            MODULE                          FUNCTION NAME
     1     dtrace                                                     BEGIN
     2     dtrace                                                     END
     3     dtrace                                                     ERROR
 
 if you have dtraceall.ko loaded, you should see many pages of lines..
 
 -- 
   John-Mark Gurney				Voice: +1 415 225 5579
 
      "All that I will do, has been done, All that I have, has not."