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From: Andi Kleen <ak@linux.intel.com>
To: "Kuppuswamy,
	Sathyanarayanan"  <sathyanarayanan.kuppuswamy@linux.intel.com>,
	Matthew Wilcox <willy@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Dan Williams <dan.j.williams@intel.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v1] driver: base: Add driver filter support
Date: Wed, 4 Aug 2021 12:27:44 -0700	[thread overview]
Message-ID: <515ff3e6-d7aa-4d40-1cf7-7113721d68b9@linux.intel.com> (raw)
In-Reply-To: <0e20cad3-8ba4-71bc-5bfd-3246ef991c6d@linux.intel.com>


On 8/4/2021 11:29 AM, Kuppuswamy, Sathyanarayanan wrote:
>
>
> On 8/4/21 11:08 AM, Matthew Wilcox wrote:
>> Why use a doubly-linked-list here?  An allocating xarray should perform
>> much better and use less memory.
>
> We don't expect the list to be too long. So we may not gain any 
> significant
> advantage in terms of performance or memory when using alternate 
> lists. Since
> linked list easier to use, we chose it.
>
Also even if it was long it wouldn't matter because this isn't a fast 
path at all.

All that matters it to write the code as clearly as possible.

-Andi


  parent reply	other threads:[~2021-08-04 19:27 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-04 17:43 [PATCH v1] driver: base: Add driver filter support Kuppuswamy Sathyanarayanan
2021-08-04 18:08 ` Matthew Wilcox
2021-08-04 18:29   ` Kuppuswamy, Sathyanarayanan
2021-08-04 18:33     ` Matthew Wilcox
2021-08-04 19:27     ` Andi Kleen [this message]
2021-08-04 18:45   ` Dan Williams
2021-08-04 19:29 ` Greg Kroah-Hartman
2021-08-04 19:50   ` Andi Kleen
2021-08-04 20:09     ` Kuppuswamy, Sathyanarayanan
2021-08-05  7:50       ` Greg Kroah-Hartman
2021-08-05  7:49     ` Greg Kroah-Hartman
2021-08-05  7:55       ` Greg Kroah-Hartman
2021-08-05  7:58         ` Greg Kroah-Hartman
2021-08-05 13:52           ` Andi Kleen
2021-08-05 17:51             ` Greg Kroah-Hartman
2021-08-05 17:58               ` Andi Kleen
2021-08-05 18:09                 ` Greg Kroah-Hartman
2021-08-05 18:44                   ` Andi Kleen
2021-08-05 19:01                     ` Dan Williams
2021-08-05 19:08                       ` Kuppuswamy, Sathyanarayanan
2021-08-05 19:28                         ` Greg Kroah-Hartman
2021-08-05 21:10                       ` Andi Kleen
2021-08-06  1:00                         ` Dan Williams
2021-08-06  5:17                           ` Greg Kroah-Hartman
2021-08-06 14:36                             ` Dan Williams
2021-08-06  5:07                     ` Greg Kroah-Hartman
2021-08-05 18:53                   ` Kuppuswamy, Sathyanarayanan
2021-08-05 19:12                     ` Greg Kroah-Hartman
2021-08-05 19:18                       ` Dan Williams
2021-08-05 19:28                         ` Greg Kroah-Hartman
2021-08-05 19:52                           ` Dan Williams
2021-08-06 11:15                             ` Jonathan Cameron
2021-08-05 16:37           ` Dan Williams
2021-08-05 17:25             ` Kuppuswamy, Sathyanarayanan
2021-08-05 17:48               ` Greg Kroah-Hartman
2021-08-05 17:52               ` Andi Kleen
2021-08-05 18:11                 ` Greg Kroah-Hartman
2021-08-05 17:49             ` Greg Kroah-Hartman
2021-08-04 20:11   ` Dan Williams
2021-08-04 20:29     ` Kuppuswamy, Sathyanarayanan
2021-08-04 21:07     ` Matthew Wilcox
2021-08-04 21:28       ` Dan Williams
2021-08-05  4:45         ` Andi Kleen
2021-08-05  7:59         ` Greg Kroah-Hartman

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