Messages in this thread | | | Date | Wed, 7 May 2008 16:24:49 +0200 | From | "stephane eranian" <> | Subject | Re: [PATCH] perfmon: add context switch hooks for x86 |
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Andi,
It would be much bigger because it would pull in a bunch of generic and model-specific data structures and code.
To context switch, you need to know what the registers are, thus you need the PMU mapping table, which is implemented by a kernel module, so it needs its registration framework....
On Wed, May 7, 2008 at 4:17 PM, Andi Kleen <andi@firstfloor.org> wrote: > stephane eranian wrote: > > Hello, > > > > > > Here is a first perfmon patch. It provides the following: > > > > - minimal perfmon source tree layout with a topdir perfmon for > > generic code and > > the x86 arch specific subdir in arch/x86. > > How much larger would a patch be that does at least something minimally > useful? (like context switching the performance registers) > > -Andi >
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