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Date: Mon, 15 Sep 2014 08:58:37 -0700 From: Andi Kleen <ak@...ux.intel.com> To: Stephane Eranian <eranian@...gle.com> Cc: linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu, kan.liang@...el.com Subject: Re: [PATCH] perf/x86/uncore: update support for client uncore IMC PMU 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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