netdev - Re: [PATCH] net: neterion: vxge: reduce stack usage in VXGE_COMPLETE_VPATH

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Date:   Mon, 20 Jul 2020 09:57:01 +0800
From:   Bixuan Cui <cuibixuan@...wei.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
CC:     <davem@...emloft.net>, <kuba@...nel.org>,
        <linux-next@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>, <jdmason@...zu.us>,
        <christophe.jaillet@...adoo.fr>, <john.wanghui@...wei.com>
Subject: Re: [PATCH] net: neterion: vxge: reduce stack usage in
 VXGE_COMPLETE_VPATH_TX



On 2020/7/20 1:05, Stephen Hemminger wrote:
> On Thu, 16 Jul 2020 17:32:47 +0000
> Bixuan Cui <cuibixuan@...wei.com> wrote:
> 
>> Fix the warning: [-Werror=-Wframe-larger-than=]
>>
>> drivers/net/ethernet/neterion/vxge/vxge-main.c:
>> In function'VXGE_COMPLETE_VPATH_TX.isra.37':
>> drivers/net/ethernet/neterion/vxge/vxge-main.c:119:1:
>> warning: the frame size of 1056 bytes is larger than 1024 bytes
>>
>> Signed-off-by: Bixuan Cui <cuibixuan@...wei.com>
> Dropping the NR_SKB_COMPLETED to 16 won't have much impact
> on performance, and shrink the size.
> 
> Doing 16 skb's at a time instead of 128 probably costs
> less than one allocation. Especially since it is unlikely
> that the device completed that many transmits at once.
> 
> 
I will send the v2 patch based on your suggestions.
thanks