Fwd: Re: Fail to use Dtrace on FreeBSD 8.1-STABLE

[Zhihao Yuan]

I guess such an error has nothing to do with the difference between
compilers... I assumed that you used similar KERNCONF on your two systems.
So, a hypothesis is: Dtrace does not work correctly on amd64.

On Wed, Dec 1, 2010 at 6:37 PM, Brandon Gooch
<jamesbrandongooch at gmail.com>wrote:

> On Wed, Dec 1, 2010 at 6:27 PM, Jeremy Chadwick
> <freebsd at jdc.parodius.com> wrote:
> > On Wed, Dec 01, 2010 at 06:22:40PM -0600, Brandon Gooch wrote:
> >> On Wed, Dec 1, 2010 at 4:30 PM, Zhihao Yuan <lichray at gmail.com> wrote:
> >> > OK. Let's make this more clear: anyone has a working 8-2-PRERELEASE
> kernel
> >> > (amd64 is preferred) with Dtrace supports, which can run the
> >> > scripts/commands on the wiki? If so, please post your kernel
> configurations
> >> > here, thanks.
> >>
> >> I have an i386 system working:
> >> [snip]
> >
> > Can you please try the command the OP originally provided?  See command
> > here:
> >
> >
> http://lists.freebsd.org/pipermail/freebsd-stable/2010-November/060216.html
>
> d820# dtrace -lP syscall | head
>   ID   PROVIDER            MODULE                          FUNCTION NAME
>   17    syscall                                             syscall entry
>   18    syscall                                             syscall return
>   19    syscall                                                exit entry
>   20    syscall                                                exit return
>   21    syscall                                                fork entry
>   22    syscall                                                fork return
>   23    syscall                                                read entry
>   24    syscall                                                read return
>   25    syscall                                               write entry
>
> The error the OP received from the above command was pretty much
> exactly what I was seeing when I attempting to use DTrace on my HEAD
> system, built with clang. Same error, at least this part:
>
> "/usr/lib/dtrace/psinfo.d", line 88: failed to resolve type
> kernel`struct thread * for identifier curthread: Unknown type name"
>
> I was running simply 'dtrace -l' to list all probes...
>
> -Brandon
>



-- 
Zhihao Yuan
The best way to predict the future is to invent it.