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Date:      Wed, 15 Oct 2008 19:55:31 -0600
From:      Scott Long <scottl@samsco.org>
To:        Lionel Flandrin <simias.n@gmail.com>
Cc:        swell.k@gmail.com, freebsd-current@freebsd.org
Subject:   Re: DTrace complains about struct thread
Message-ID:  <48F69F13.8020900@samsco.org>
In-Reply-To: <20081015221842.GA1329@casibsd.localnet>
References:  <20081015090453.GA1995@casibsd.elexo.fr.local>	<86prm1rf11.fsf@gmail.com> <20081015221842.GA1329@casibsd.localnet>

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Lionel Flandrin wrote:
> On Wed, Oct 15, 2008 at 08:36:58PM +0400, swell.k@gmail.com wrote:
>> I believe only kernel should be rebuilt with WITH_CTF=1 since there is
>> no userland tracing yet.
>>
>> Try building world as usual and enable WITH_CTF only for kernel, then
>> rerun the test.
> 
> Ok, so i rebuilt everything using WITH_CTF only for
> build/installkernel.
> 
> It fixed my "abort" problem with gcc (I guess it didn't like the
> additional CTF section in the ELF), but I still get the "failed to
> resolve type kernel`struct thread" error when I run dtrace. I tried
> with "hotkernel" from the DTraceToolkit-0.99 and several one liner
> syscall tracing. Always the same error message.
> 

Yes, this 'struct thread' error message is a regression in HEAD.  It
is not present in FreeBSD 7.1, so I'd recommend that you focus on
that if at all possible.  I don't know where the regression is or how
to fix it, but hopefully John Birrell will take notice and help out.

Scott




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