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SubjectRe: [PATCH 3/4] scsi: ufs-debugfs: Add user-defined exception_event_mask
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On Wed, 2021-02-03 at 11:56 +0200, Adrian Hunter wrote:
> >
> > Hallo Adrian
>
> Hi Bean
>
> Thanks for the review
>
> >
> > Would you like sharing the advantage of this debugfs node comparing
> > to
> > sysfs node "attributes/exception_event_control(if it is writable)"?
>
> Primarily this is being done as a debug interface, but the user's
> exception
> events also need to be kept separate from the driver's ones.
>
> > what is the value of this?
>
> To be able to determine if the UFS device is being affected by
> exception events.
>
> > Also, now I can disable/enable UFS event over ufs-bsg.
>
> That will be overwritten by the driver when it updates the e.g. bkops
> control, or sometimes also suspend/resume.

Hi Adrian
yes, I saw that, they are not tracked by driver.

I have one question that why "exception_event_mask" cannot represent
the current QUERY_ATTR_IDN_EE_CONTROL value? only after writing it.


thanks,
Bean




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