RE: [PATCH v4] scsi: ufs: wb: Add explicit flush_threshold sysfs attribute

[Avri Altman]

> 
> There are three flags that control Write Booster Feature:
> 
>     1. WB ON/OFF
>     2. WB Hibern Flush ON/OFF (implicitly)
>     3. WB Flush ON/OFF (explicit)
> 
> In the case of "Hibern Flush", one of the conditions for flush WB buffer is
> that avail_wb_buff < wb_flush_threshold.
> 
> As we know, different users have different requirements for power
> consumption and performance. Therefore, we need the ability to manually
> set wb_flush_threshold, so that users can easily and flexibly adjust
> the wb_flush_threshold value, thereby achieving a balance between power
> consumption and performance.
> 
> So the sysfs attribute that controls this is necessary.
> 
> The meaning of wb_flush_threshold is the percentage of WB's total size,
> such as 1 representing 10%, 2 representing 20%, and so on.
> 
> Signed-off-by: Lu Hongfei <luhongfei@xxxxxxxx>
Reviewed-by: Avri Altman <avri.altman@xxxxxxx>