Re: Results of systemtap-20080517 snapshot on ppc64

[Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>]

On Mon, May 19, 2008 at 12:10:28PM -0700, Jim Keniston wrote:
> On Mon, 2008-05-19 at 18:19 +0530, Ananth N Mavinakayanahalli wrote:
> > On Mon, May 19, 2008 at 06:02:55PM +0530, Srinivasa DS wrote:
> > > Attaching results of systemtap-20080517 snapshot on ppc64. I have applied 
> > > one interim fix(present in bug#6429) and executed the tests.
> > 
> > Looks like there are a higher number of errors compared to the earlier
> > tests... probably new features?
> > 
> ...
> > 
> > > FAIL: semok/nodwf01.stp
> > > FAIL: semok/nodwf02.stp
> > > FAIL: semok/nodwf03.stp
> > ^^^^^^^^^^
> > These are probably related to dwarfless
> ...
> 
> Yup.  Please try the attached patch and see if it fixes the dwarfless
> failures.
> 
> Ananth et al, can you think of any kernel functions (nm type T or t)
> where this simple mapping of ".func" to "func" would cause problems?

If you are passing the "func" (or ".func") as a kp.symbol_name member
down to the kernel, then there won't be a problem. Otherwise, if
SystemTap is doing the lookup passing just a vaddr, then there may be
issues if its not done correctly.

Ananth