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

    * 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


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