linux-kernel - Re: [PATCH v2 3/3] perf vendor events: Add Fujitsu A64FX V1.2 pmu event

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Message-ID: <a0f7c814-5c56-4e17-1198-a611d19f57d5@huawei.com>
Date:   Thu, 21 Jan 2021 17:41:26 +0000
From:   John Garry <john.garry@...wei.com>
To:     Shunsuke Nakamura <nakamura.shun@...fujitsu.com>
CC:     <will@...nel.org>, <mathieu.poirier@...aro.org>,
        <leo.yan@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] perf vendor events: Add Fujitsu A64FX V1.2 pmu
 event

On 21/01/2021 10:54, Shunsuke Nakamura wrote:
> +  {
> +    "PublicDescription": "This event counts each correction to the predicted program flow that occurs because of a misprediction from, or no prediction from, the branch prediction resources and that relates to instructions that the branch prediction resources are capable of predicting.",
> +    "EventCode": "0x10",
> +    "EventName": "BR_MIS_PRED",

I think that we need to the same here as the IMPDEF recommended events - 
add a common JSON to reduce the duplication.

I had done work on this for current CPUs, but never got it finished. Let 
me check the status.

Cheers,
John

Ps, arm have put JSONs here for their cores:

https://github.com/ARM-software/data/tree/master/pmu

But unfortunately the schema does not suit perf.

I raised an issue, but no response.

I'm just wondering if you hand copied the JSON data.


> +    "BriefDescription": "This event counts each correction to the predicted program flow that occurs because of a misprediction from, or no prediction from, the branch prediction resources and that relates to instructions that the branch prediction resources are capable of predicting."
> +  },