Messages in this thread | | | Date | Thu, 8 May 2008 08:42:35 -0800 | From | "stephane eranian" <> | Subject | Re: [PATCH] perfmon: add context switch hooks for x86 |
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Andi,
It is not necessarily that easy. I will lok at this next week.
On 5/7/08, Andi Kleen <andi@firstfloor.org> wrote: > stephane eranian wrote: > > 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.... > > > Can you strip it down to be simpler? > > Minimally generic x86 perfctr switching code just needs an array with > MSR numbers, doesn't it? And there are only a few variants. > > > -Andi >
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