linux-kernel - Re: [PATCH] perf vendor events arm64: Enable JSON events for ThunderX2 B0

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Date:   Wed, 7 Mar 2018 09:32:05 -0500
From:   William Cohen <wcohen@...hat.com>
To:     Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     acme@...nel.org, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, peterz@...radead.org, mingo@...hat.com,
        john.garry@...wei.com, Will.Deacon@....com, mark.rutland@....com,
        jnair@...iumnetworks.com, Robert.Richter@...ium.com
Subject: Re: [PATCH] perf vendor events arm64: Enable JSON events for
 ThunderX2 B0

On 03/07/2018 06:08 AM, Ganapatrao Kulkarni wrote:
> There is MIDR change on ThunderX2 B0, adding an entry to mapfile
> to enable JSON events for B0.
> 
> Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
> ---
>  tools/perf/pmu-events/arch/arm64/mapfile.csv | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/tools/perf/pmu-events/arch/arm64/mapfile.csv b/tools/perf/pmu-events/arch/arm64/mapfile.csv
> index e61c9ca..93c5d14 100644
> --- a/tools/perf/pmu-events/arch/arm64/mapfile.csv
> +++ b/tools/perf/pmu-events/arch/arm64/mapfile.csv
> @@ -13,4 +13,5 @@
>  #
>  #Family-model,Version,Filename,EventType
>  0x00000000420f5160,v1,cavium,core
> +0x00000000430f0af0,v1,cavium,core
>  0x00000000410fd03[[:xdigit:]],v1,cortex-a53,core
> 

Hi,
Like the cortex-a53 the last digit '0' of the match for the MIDR should be replaced with [[:xdigit:]] to allow for possible future revisions of chip:

0x00000000430f0af[[:xdigit:]],v1,cavium,core


-Will Cohen