Re: [PATCH 0/2] oprofile support for ppc750
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2009-01-07 02:52:42
On Tue, 2009-01-06 at 14:55 +0200, Octavian Purdila wrote:
Adds oprofile support for ppc750. ppc750 performance counters interface is similar with G4, but it only has 4 performance counters instead of 6. I tested this on a PPC750GX and it seems to work fine.
I'm not too sure about using the same model as 74xx... I have some patches that haven't been released yet from Jack Miller to implement the full OP support for 750 but they appear to cause crashes. There is a known HW bug in various 750's that basically make the performance interrupt unuseable. I -think- it may have been fixed in the very latest revision of the 750CL though but I'm not sure. Cheers, Ben.