RE: oprofile support for PPC_E5500

> -----Original Message-----
> From: Michael Petlan [mailto:[email protected]]
> Sent: Tuesday, July 12, 2016 4:48 PM
> To: Beaman, Thomas
> Cc: William Cohen; [email protected]
> Subject: RE: oprofile support for PPC_E5500
> 
> On Tue, 12 Jul 2016, Beaman, Thomas wrote:
> >
> >>
> >> Hi Tom,
> >>
> >> Thanks for making the request to Windriver for the e6500 oprofile patch.
> >>
> >> Are there similar special patches in kernel being used to allow
> >> access to the
> >> e5500 performance monitoring hardware?  I see references to e500 and
> >> e6500 in the mainline kernel (linux/arch/power/perf/e500-pmu.c and
> >> linux/arch/power/perf/e6500-pmu.c, but don't see anything for e5500.
> >> Does "perf list" work and list out events thave "[Hardware event]" or
> >> "[Kernel PMU event]" on the line?  If the kernel support isn't there,
> >> then changes to the user-space oprofile isn't make much of a difference.
> >>
> >> -Will
> >
> >
> > Hi Will,
> >
> > So far I am only using Michaels patch plus a few hand edits I make, which
> allows detection of the cpu.
> >
> > I have attached the output of the "perf list" command.  It does have
> > some Hardware Events listed
> >
> > Tom
> >
> 
> Since the `perf list` shows stalled-cycles-frontend and stalled-cycles-backend
> events, it seems it does not use the e6500-pmu.c file, since these events are
> specified in e500-pmu.c only.
> 
> Tom, the question was whether WindRiver has some kernel patches for
> e5500 support or not.
> 
> You may also try to see which PMU drivers are present in kallsyms:
> 
> cat /proc/kallsyms | grep pmu | grep init
> 
> If you see e5500 there, your kernel probably has some WindRiver-specific
> patch, since there is probably no init_e5500_pmu in the upstream kernel.
> 
> Michael

Hi Michael,  

There are no specific WindRiver patches that I can see for the e5500 and there is no init_e5500 in kallsyms. How do you think we should proceed ?  

Thanks,
Tom

root@miopqt_250:~# cat /proc/kallsyms | grep pmu | grep init
c000000000059de8 t .fsl_emb_pmu_event_init
c00000000005acf0 t .init_e500_pmu
c00000000005ade4 t .init_e6500_pmu
c000000000c51f10 t __initcall_init_e500_pmuearly
c000000000c51f18 t __initcall_init_e6500_pmuearly
c000000000d3e480 d fsl_emb_pmu_event_init
c000000000d3e5b8 d init_e500_pmu
c000000000d3e5e8 d init_e6500_pmu



------------------------------------------------------------------------------
What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are 
consuming the most bandwidth. Provides multi-vendor support for NetFlow, 
J-Flow, sFlow and other flows. Make informed decisions using capacity planning
reports.http://sdm.link/zohodev2dev