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Date: Thu, 30 Oct 2014 14:56:06 +0100
Message-ID: <CAAfyv351AXRuZw5zYQ2=6jmJrnzLLscggzduKuL6GeQbzQgNqg@mail.gmail.com> (sfid-20141030_145612_965121_DD8225C7)
Subject: Re: mwifiex_usb_submit_rx_urb: dev_alloc_skb failed when conected to 5GHz
From: Belisko Marek <marek.belisko@gmail.com>
To: Amitkumar Karwar <akarwar@marvell.com>
Cc: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
	Avinash Patil <patila@marvell.com>
Content-Type: text/plain; charset=UTF-8
Sender: linux-wireless-owner@vger.kernel.org

Hi Amitkumar,

On Thu, Oct 30, 2014 at 11:01 AM, Amitkumar Karwar <akarwar@marvell.com> wrote:
> Hi Marek,
>
> Thanks a lot for testing. I have added flow control logic to limit pending Rx packets. Could you please check if attached patch fixes out of memory issue?
> You can also backport below patch to your 3.9 kernel for rx_pending count imbalance issue.
With rx_pending count imbalance + your patch on top I cannot reproduce
allocation failure issue (tested on 1 hour iperf session).
Reason why console was completely blocked was that iperf server eats ~
55% cpu + kworker ~27 + ksoftirq ~14 so I think this is cause
why console was unresponsive. Thanks for patches. You can add my Tested-by ;)
>
> http://www.spinics.net/lists/linux-wireless/msg115536.html
>
> Your hacks to decrement rx_pending count won't be needed now.
>
> Regards,
> Amitkumar

BR,

marek
-- 
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