From: Felix Fietkau <nbd@openwrt.org>
To: "John W. Linville" <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org, lrodriguez@atheros.com,
Jouni Malinen <jouni.malinen@atheros.com>
Subject: Re: [PATCH] ath9k: use split rx buffers to get rid of order-1 skb allocations
Date: Thu, 27 Jan 2011 22:58:54 +0100 [thread overview]
Message-ID: <4D41EA9E.6040907@openwrt.org> (raw)
In-Reply-To: <20110127213105.GC2271@tuxdriver.com>
On 2011-01-27 10:31 PM, John W. Linville wrote:
> On Wed, Jan 26, 2011 at 06:23:27PM +0100, Felix Fietkau wrote:
>> With this change, less CPU time is spent trying to look for consecutive
>> pages for rx skbs. This also reduces the socket memory required for IP/UDP
>> reassembly.
>> Only two buffers per frame are supported. Frames spanning more buffers
>> will be dropped, but the buffer size is enough to handle the required
>> AMSDU size.
>>
>> Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
>> Signed-off-by: Felix Fietkau <nbd@openwrt.org>
>
> Will this address https://bugzilla.kernel.org/show_bug.cgi?id=26652 ?
I think so. Memory allocation will fail less frequently and it reduces
RAM usage per device by 2 MB.
- Felix
prev parent reply other threads:[~2011-01-27 21:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-26 17:23 [PATCH] ath9k: use split rx buffers to get rid of order-1 skb allocations Felix Fietkau
2011-01-27 21:31 ` John W. Linville
2011-01-27 21:58 ` Felix Fietkau [this message]
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