linux-kernel - Re: [PATCH] perf/x86: enable Intel Cedarview Atom suppport

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Date:	Mon, 20 Aug 2012 11:41:38 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	andi@...stfloor.org, zheng.z.yan@...el.com
Subject: Re: [PATCH] perf/x86: enable Intel Cedarview Atom suppport

> diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
> index 7f2739e..0d3d63a 100644
> --- a/arch/x86/kernel/cpu/perf_event_intel.c
> +++ b/arch/x86/kernel/cpu/perf_event_intel.c
> @@ -2008,6 +2008,7 @@ __init int intel_pmu_init(void)
>  		break;
>  
>  	case 28: /* Atom */
> +	case 54: /* Cedariew */

Ack. We currently miss some more 32nm Atoms too, will send patches soon.

>  		memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
>  		       sizeof(hw_cache_event_ids));
>  
> diff --git a/arch/x86/kernel/cpu/perf_event_intel_lbr.c b/arch/x86/kernel/cpu/perf_event_intel_lbr.c
> index 520b426..da02e9c 100644
> --- a/arch/x86/kernel/cpu/perf_event_intel_lbr.c
> +++ b/arch/x86/kernel/cpu/perf_event_intel_lbr.c
> @@ -686,7 +686,8 @@ void intel_pmu_lbr_init_atom(void)
>  	 * to have an operational LBR which can freeze
>  	 * on PMU interrupt
>  	 */
> -	if (boot_cpu_data.x86_mask < 10) {
> +	if (boot_cpu_data.x86_model == 28
> +	    && boot_cpu_data.x86_mask < 10) {

Is that correct?

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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