linux-kernel - Re: [PATCH 3/4] scsi: ufs-debugfs: Add user-defined exception_event

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Message-ID: <85b6cbb805e97081a676aeb30fe76f059eba192e.camel@gmail.com>
Date:   Wed, 03 Feb 2021 10:45:15 +0100
From:   Bean Huo <huobean@...il.com>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Can Guo <cang@...eaurora.org>,
        Stanley Chu <stanley.chu@...iatek.com>
Subject: Re: [PATCH 3/4] scsi: ufs-debugfs: Add user-defined
 exception_event_mask

On Tue, 2021-01-19 at 16:15 +0200, Adrian Hunter wrote:
> Allow users to enable specific exception events via debugfs.
> 
> The bits enabled by the driver ee_drv_ctrl are separated from the
> bits
> enabled by the user ee_usr_ctrl. The control mask ee_mask_ctrl is the
> logical-or of those two. A mutex is needed to ensure that the masks
> match
> what was written to the device.

Hallo Adrian

Would you like sharing the advantage of this debugfs node comparing to
sysfs node "attributes/exception_event_control(if it is writable)"?
what is the value of this?
Also, now I can disable/enable UFS event over ufs-bsg.

Bean