Re: [git-pull -tip] x86: Basic AMD Support for performance counters

Ingo Molnar
2009-03-01T11:30:41Z

* Jaswinder Singh Rajput <jaswinder@kernel.org> wrote:

> On Sun, 2009-03-01 at 09:36 +0100, Ingo Molnar wrote:
> > * Ingo Molnar <mingo@elte.hu> wrote:
> >
> > > Seems to be working fine, here's the output from an Athlon 64
> > > 3200+ (Sempron) box:
> > >
> > > Performance counter stats for 'ls':
> > >
> > > 17.420811 task clock ticks (msecs)
> > >
> > > 0 CPU migrations (events)
> > > 12 context switches (events)
> > > 583 pagefaults (events)
> > > 29760299 CPU cycles (events)
> > > 29401642 instructions (events)
> > > 12698498 cache references (events)
> > > 66269 cache misses (events)
> > >
> > > Wall-clock time elapsed: 687.999988 msecs
> >
> > The patches cause a crash on another system - an Opteron system
> > spontaneous reboots at this point during early bootup:
> >
> > CPU 0/0x4 -> Node 0
> > tseg: 00cfe00000
> > CPU: Physical Processor ID: 0
> > CPU: Processor Core ID: 0
> > using C1E aware idle routine
> > AMD Performance Monitoring support detected.
> > ... num counters: 4
> > ... value mask: 0000000000000000
> > ... fixed counters: 0
> > ... counter mask: 000000000000000f
> > ACPI: Core revision 20081204
> > ftrace: converting mcount calls to 0f 1f 44 00 00
> > ftrace: allocating 16365 entries in 129 pages
> > Setting APIC routing to physical flat
> > masked ExtINT on CPU#0
> > ENABLING IO
> > [reboot]
> >
>
> Can you please share your config file.

any config file will crash that box. I used the 64-bit defconfig
- i.e. 'make ARCH=x86_64 defconfig'.

Ingo