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

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Message-ID: <f1436c35-e8be-7b9d-c2f5-b6403348f87a@huawei.com>
Date:   Fri, 27 Sep 2019 15:40:47 +0800
From:   Yunsheng Lin <linyunsheng@...wei.com>
To:     <jiri@...lanox.com>, <valex@...lanox.com>
CC:     <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linuxarm@...wei.com" <linuxarm@...wei.com>
Subject: [question] About triggering a region snapshot through the devlink cmd

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?