From: Jakub Kicinski <kuba@kernel.org>
To: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: jwiedmann.dev@gmail.com, Shay Agroskin <shayagr@amazon.com>,
Arthur Kiyanovski <akiyano@amazon.com>,
David Arinzon <darinzon@amazon.com>,
Noam Dagan <ndagan@amazon.com>, Saeed Bishara <saeedb@amazon.com>,
"David S . Miller" <davem@davemloft.net>,
Daniel Borkmann <daniel@iogearbox.net>,
Sameeh Jubran <sameehj@amazon.com>,
Wei Yongjun <weiyongjun1@huawei.com>,
Lorenzo Bianconi <lorenzo@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] net: ena: Do not waste napi skb cache
Date: Wed, 26 Jan 2022 07:52:20 -0800 [thread overview]
Message-ID: <20220126075220.3d60981f@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> (raw)
In-Reply-To: <YfFJuQQBLJRxIJR+@ip-172-31-19-208.ap-northeast-1.compute.internal>
On Wed, 26 Jan 2022 13:16:41 +0000 Hyeonggon Yoo wrote:
> By profiling, discovered that ena device driver allocates skb by
> build_skb() and frees by napi_skb_cache_put(). Because the driver
> does not use napi skb cache in allocation path, napi skb cache is
> periodically filled and flushed. This is waste of napi skb cache.
>
> As ena_alloc_skb() is called only in napi, Use napi_build_skb()
> and napi_alloc_skb() when allocating skb.
>
> This patch was tested on aws a1.metal instance.
>
> [ jwiedmann.dev@gmail.com: Use napi_alloc_skb() instead of
> netdev_alloc_skb_ip_align() to keep things consistent. ]
>
> Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
It seems you missed CCing netdev@, you'll need to repost.
You can keep the ack from Shay.
next prev parent reply other threads:[~2022-01-26 15:52 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-23 11:56 [PATCH] net: ena: Do not waste napi skb cache Hyeonggon Yoo
2022-01-24 8:57 ` Julian Wiedmann
2022-01-24 9:29 ` Julian Wiedmann
2022-01-24 20:50 ` Shay Agroskin
2022-01-25 9:34 ` Hyeonggon Yoo
2022-01-25 13:50 ` Julian Wiedmann
2022-01-29 8:56 ` Hyeonggon Yoo
2022-01-25 13:45 ` Julian Wiedmann
2022-01-26 13:16 ` [PATCH v2] " Hyeonggon Yoo
2022-01-26 15:16 ` Shay Agroskin
2022-01-26 15:52 ` Jakub Kicinski [this message]
2022-01-29 8:55 ` Hyeonggon Yoo
2022-01-29 8:53 Hyeonggon Yoo
2022-02-01 5:50 ` patchwork-bot+netdevbpf
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