Messages in this thread | | | Date | Mon, 15 Sep 2014 08:58:37 -0700 | From | Andi Kleen <> | Subject | Re: [PATCH] perf/x86/uncore: update support for client uncore IMC PMU |
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On Mon, Sep 15, 2014 at 04:38:32PM +0200, Stephane Eranian wrote: > > This patch restructures the memory controller (IMC) uncore > PMU support for client SNB/IVB/HSW processors. The main change > is that it can now cope with more than one PCI device ID per > processor model. There are many flavors of memory controllers > for each processor. They have different PCI device ID, yet > they behave the same w.r.t. the memory controller PMU that > we are interested in. > > The patch now supports two distinct memory controllers for IVB > processors: one for mobile, one for desktop.
I haven't investigated yet, but on my Lenovo ULT Haswell laptop the IMC PCI-ID doesn't exist, so the driver doesn't initialize.
So either it's the BIOS disabling it, or it's a different ID there too.
BTW any reason you didn't enable the CBOX/ARB PMUs originally for HSW? At least ARB events are useful for some things.
-Andi
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