linux-kernel - Re: [PATCHv2] perf/x86/intel/uncore: add support for Haswell ULT IMC uncore

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Date:	Mon, 20 Apr 2015 17:35:58 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Sonny Rao <sonnyrao@...omium.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [PATCHv2] perf/x86/intel/uncore: add support for Haswell ULT IMC uncore

On Mon, Apr 20, 2015 at 5:34 PM, Sonny Rao <sonnyrao@...omium.org> wrote:
> This uncore is the same as the Haswell desktop part but uses a
> different PCI ID.
>
> Signed-off-by: Sonny Rao <sonnyrao@...omium.org>

You don't need my ack, and I don't know enough to review the perf
stuff anyway, but the way you handled the PCI device ID looks great to
me.

> ---
>  arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
> index 3001015..ca75e70 100644
> --- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
> +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snb.c
> @@ -1,6 +1,9 @@
>  /* Nehalem/SandBridge/Haswell uncore support */
>  #include "perf_event_intel_uncore.h"
>
> +/* Uncore IMC PCI Id */
> +#define PCI_DEVICE_ID_INTEL_HSW_U_IMC  0x0a04
> +
>  /* SNB event control */
>  #define SNB_UNC_CTL_EV_SEL_MASK                        0x000000ff
>  #define SNB_UNC_CTL_UMASK_MASK                 0x0000ff00
> @@ -472,6 +475,10 @@ static const struct pci_device_id hsw_uncore_pci_ids[] = {
>                 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HSW_IMC),
>                 .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
>         },
> +       { /* IMC */
> +               PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_HSW_U_IMC),
> +               .driver_data = UNCORE_PCI_DEV_DATA(SNB_PCI_UNCORE_IMC, 0),
> +       },
>         { /* end: all zeroes */ },
>  };
>
> @@ -502,6 +509,7 @@ static const struct imc_uncore_pci_dev desktop_imc_pci_ids[] = {
>         IMC_DEV(IVB_IMC, &ivb_uncore_pci_driver),    /* 3rd Gen Core processor */
>         IMC_DEV(IVB_E3_IMC, &ivb_uncore_pci_driver), /* Xeon E3-1200 v2/3rd Gen Core processor */
>         IMC_DEV(HSW_IMC, &hsw_uncore_pci_driver),    /* 4th Gen Core Processor */
> +       IMC_DEV(HSW_U_IMC, &hsw_uncore_pci_driver),  /* 4th Gen Core ULT Mobile Processor */
>         {  /* end marker */ }
>  };
>
> --
> 2.1.2
>
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