Dynamic-ftrace not working in PlayStation3

[Michael Ellerman]

On Thu, 2009-01-29 at 22:38 -0500, Steven Rostedt wrote:
> On Thu, 29 Jan 2009, Geoff Levand wrote:
> 
> > > 
> > > //*************************************************************************************************************************************
> > > ip:d000000000045aec jumps to d000000000046340 r2: d000000000050c00
> > > 3d82ffff 398c5740 ffff5740 toc: d000000000046360 c0000000 00007cac
> > > ip:d0000000000458d0 jumps to d000000000046340 r2: d000000000050c00
> > > 3d82ffff 398c5740 ffff5740 toc: d000000000046360 c0000000 00007cac
> > > ip:d000000000045838 jumps to d000000000046340 r2: d000000000050c00
> > > 3d82ffff 398c5740 ffff5740 toc: d000000000046360 c0000000 00007cac
> > > ip:d0000000000456dc jumps to d000000000046340 r2: d000000000050c00
> > > 3d82ffff 398c5740 ffff5740 toc: d000000000046360 c0000000 00007cac
> > ...
> 
> So I take it that the above showed that the code worked for some?
> 
> > > ps3_system_bus_match:362: dev=11.0(lpm_01), drv=11.0(ps3-lpm): match
> > > ps3_system_bus_match:362: dev=11.0(lpm_01), drv=11.0(ps3-lpm): match
> > > ps3-lpm lpm_01:  <- ps3_lpm_probe:1245:
> > > ip:d0000000003fe280 jumps to d0000000003ffad8 r2: d000000000422c70
> 
> Could you find out what that function is? Perhaps do a:
> 
> 	printk("ip:%pF\n", ip);
> 
> As long as you have kallsyms on, that should point to the function that's 
> the problem.
> 
> > > 3d82fffe 398cce68 fffece68 toc: d00000000040faf8 6c656400 5f5f6b73
> > > addr does not match
> > > ptr: 6c6564005f5f6b73
> 
> ptr is the same info as the last line above.

6c656400 5f5f6b73 = "led\0__ks"

:)

> > --- a/arch/powerpc/kernel/ftrace.c
> > +++ b/arch/powerpc/kernel/ftrace.c
> > @@ -23,7 +23,7 @@
> >  #if 0
> 
> Heh, I would have just done:
> 
> - #if 0
> + #if 1
> 
> ;-)

Should do s/DEBUGP/pr_debug/g

cheers


-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
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