linux-kernel - Re: [PATCH 06/12] perf/x86-ibs: Precise event sampling with IBS for AMD CPUs

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Message-ID: <1334399098.2528.52.camel@twins>
Date:	Sat, 14 Apr 2012 12:24:58 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Robert Richter <robert.richter@....com>
Cc:	Ingo Molnar <mingo@...e.hu>, Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 06/12] perf/x86-ibs: Precise event sampling with IBS for
 AMD CPUs

On Mon, 2012-04-02 at 20:19 +0200, Robert Richter wrote:
> +       switch (event->attr.type) {
> +       case PERF_TYPE_HARDWARE:
> +               switch (event->attr.config) {
> +               case PERF_COUNT_HW_CPU_CYCLES:
> +                       *config = 0;
> +                       return 0;
> +               }
> +               break;
> +       case PERF_TYPE_RAW:
> +               switch (event->attr.config) {
> +               case 0x0076:
> +                       *config = 0;
> +                       return 0;
> +               case 0x00C1:
> +                       *config = IBS_OP_CNT_CTL;
> +                       return 0;
> +               }
> +               break;
> +       default:
> +               return -ENOENT;
> +       } 

Another option would be to do this from amd_pmu_hw_config() after you've
already gotten rid of the whole attr.type thing.
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