linux-kernel - Re: [Outreachy kernel] [PATCH v5] staging: unisys: visorhba: Convert module from IDR to XArray

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Message-ID: <2381635.6tjctmx4mM@linux.local>
Date:   Mon, 03 May 2021 20:41:05 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     outreachy-kernel@...glegroups.com,
        David Kershner <david.kershner@...sys.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Daniel Vetter <daniel@...ll.ch>,
        Matthew Wilcox <willy@...radead.org>
Subject: Re: [Outreachy kernel] [PATCH v5] staging: unisys: visorhba: Convert module from IDR to XArray

On Monday, May 3, 2021 6:31:20 PM CEST Greg Kroah-Hartman wrote:
> On Tue, Apr 27, 2021 at 05:07:19PM +0200, Fabio M. De Francesco wrote:
> > Converted visorhba 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.
> 
> And does any of that affect the runtime of this driver?
>
Unfortunately, I cannot tell. I had cc'ed the maintainer at Unisys but no 
response at all at now.
> 
> I would need this to be tested by the maintainer before I could do
> anything, and a review from willy@ would be also appreciated as I'm
> guessing he asked you to do this?
>
I've contacted willy on #kernel-outreachy and said that you would appreciate a 
review from him. I hope he can find time to see that code.

Thanks,

Fabio
> 
> thanks,
> 
> greg k-h