netdev - Re: [question] About triggering a region snapshot through the devlink cmd

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Date:   Sun, 29 Sep 2019 20:21:37 +0800
From:   Yunsheng Lin <linyunsheng@...wei.com>
To:     Jiri Pirko <jiri@...nulli.us>
CC:     <jiri@...lanox.com>, <valex@...lanox.com>, <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linuxarm@...wei.com" <linuxarm@...wei.com>
Subject: Re: [question] About triggering a region snapshot through the devlink
 cmd

On 2019/9/27 16:13, Jiri Pirko wrote:
> Fri, Sep 27, 2019 at 09:40:47AM CEST, linyunsheng@...wei.com wrote:
>> Hi, Jiri & Alex
>>
>>    It seems that a region' snapshot is only created through the
>> driver when some error is detected, for example:
>> mlx4_crdump_collect_fw_health() -> devlink_region_snapshot_create()
>>
>>    We want to trigger a region' snapshot creation through devlink
>> cmd, maybe by adding the "devlink region triger", because we want
>> to check some hardware register/state when the driver or the hardware
>> does not detect the error sometimes.
>>
>> Does about "devlink region triger" make sense?
>>
>> If yes, is there plan to implement it? or any suggestion to implement
>> it?
> 
> Actually, the plan is co convert mlx4 to "devlink health" api. Mlx5
> already uses that.
> 
> You should look into "devlink health".

Thanks for mentioning the "devlink health" api.

I has sent a RFC adding the support of the dump hardware mac table.
Please have a look, any comment or suggestion will be very helpful.

> 
>>
> 
>