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SubjectRe: 2.6.25 new perfmon kernel patch + libpfm + pfmon available
On 29.04.08 09:42:18, Arjan van de Ven wrote:
> On Wed, 30 Apr 2008 15:51:39 +0200
> "stephane eranian" <> wrote:
> > If I recall, AMD said that this special initialization would
> > eventually migrate into the core kernel. The pci_read() may be there
> > because it was not exported by the kernel (this particular code lives
> > in a kernel module).
> ... yet your patch adds an EXPORT_SYMBOL() just to make this specific function possible. Weird.
> I find it hard to believe that there would be no code in the kernel to
> read or write config space of a device you have..... :)
> In fact I bet 80% of the drivers in the tree use it.

Access to extended config space for AMD northbridges was not yet
implemented. Recent patches from Yinghai Lu fix this. I will send a
patch that uses the in-kernel functions.


Advanced Micro Devices, Inc.
Operating System Research Center

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