Re: [greybus-dev] [PATCH v2] staging: greybus: Convert uart.c from IDR to XArray

From: Alex Elder
Date: Wed Aug 25 2021 - 09:45:18 EST


On 8/25/21 12:20 AM, Fabio M. De Francesco wrote:
> On Monday, August 16, 2021 4:46:08 PM CEST Alex Elder wrote:
>> On 8/14/21 1:11 PM, Fabio M. De Francesco wrote:
>>> Convert greybus/uart.c from IDR to XArray. The abstract data type XArray
>>> is more memory-efficient, parallelisable, and cache friendly. It takes
>>> advantage of RCU to perform lookups without locking. Furthermore, IDR is
>>> deprecated because XArray has a better (cleaner and more consistent) API.
>>
>> I haven't verified the use of the new API (yet) but I have a few
>> comments on your patch, below.
>>
>> -Alex
>
> Dear Alex,
>
> On August 16th I submitted the v3 of my patch ("staging: greybus: Convert uart.c
> from IDR to XArray"), with changes based on the comments you provided.

Yes, I intend to review version 3. I'm sorry I didn't respond to
your earlier message; I am on vacation this week.

-Alex
>
> Could you please take a few minutes to review this too? I would really appreciate it.
>
> The v3 patch is at https://lore.kernel.org/lkml/20210816195000.736-1-fmdefrancesco@xxxxxxxxx/
>
> Thanks,
>
> Fabio
>
> P.S.: I'd also like to know if you think it's worth converting IDA to XArray in order
> to improve the Greybus driver in staging.
>
>
>
>
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