From: Matteo Croce <mcroce@linux.microsoft.com>
To: netdev@vger.kernel.org, linux-mm@kvack.org
Cc: Ayush Sawal <ayush.sawal@chelsio.com>,
Vinay Kumar Yadav <vinay.yadav@chelsio.com>,
Rohit Maheshwari <rohitm@chelsio.com>,
"David S. Miller" <davem@davemloft.net>,
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Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
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Russell King <linux@armlinux.org.uk>,
Mirko Lindner <mlindner@marvell.com>,
Stephen Hemminger <stephen@networkplumber.org>,
Tariq Toukan <tariqt@nvidia.com>,
Jesper Dangaard Brouer <hawk@kernel.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
John Fastabend <john.fastabend@gmail.com>,
Boris Pismenny <borisp@nvidia.com>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
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Miaohe Lin <linmiaohe@huawei.com>,
Yunsheng Lin <linyunsheng@huawei.com>,
Guillaume Nault <gnault@redhat.com>,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
bpf@vger.kernel.org, Matthew Wilcox <willy@infradead.org>,
Eric Dumazet <edumazet@google.com>,
David Ahern <dsahern@gmail.com>,
Lorenzo Bianconi <lorenzo@kernel.org>,
Saeed Mahameed <saeedm@nvidia.com>, Andrew Lunn <andrew@lunn.ch>,
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Sven Auhagen <sven.auhagen@voleatech.de>
Subject: Re: [PATCH net-next v6 3/5] page_pool: Allow drivers to hint on SKB recycling
Date: Thu, 3 Jun 2021 20:45:19 +0200 [thread overview]
Message-ID: <CAFnufp2Qbq53rT17eZD97tm3o5OFJeHEDAyaW8VhVcy4u+KeNQ@mail.gmail.com> (raw)
In-Reply-To: <20210521161527.34607-4-mcroce@linux.microsoft.com>
On Fri, May 21, 2021 at 6:16 PM Matteo Croce <mcroce@linux.microsoft.com> wrote:
> +bool page_pool_return_skb_page(void *data)
> +{
> + struct page_pool *pp;
> + struct page *page;
> +
> + page = virt_to_head_page(data);
> + if (unlikely(page->pp_magic != PP_SIGNATURE))
> + return false;
> +
> + pp = (struct page_pool *)page->pp;
> +
> + /* Driver set this to memory recycling info. Reset it on recycle.
> + * This will *not* work for NIC using a split-page memory model.
> + * The page will be returned to the pool here regardless of the
> + * 'flipped' fragment being in use or not.
> + */
> + page->pp = NULL;
> + page_pool_put_full_page(pp, virt_to_head_page(data), false);
Here I could just use the cached "page" instead of calling
virt_to_head_page() once again.
--
per aspera ad upstream
next prev parent reply other threads:[~2021-06-03 18:46 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 16:15 [PATCH net-next v6 0/5] page_pool: recycle buffers Matteo Croce
2021-05-21 16:15 ` [PATCH net-next v6 1/5] mm: add a signature in struct page Matteo Croce
2021-05-21 16:15 ` [PATCH net-next v6 2/5] skbuff: add a parameter to __skb_frag_unref Matteo Croce
2021-05-21 16:15 ` [PATCH net-next v6 3/5] page_pool: Allow drivers to hint on SKB recycling Matteo Croce
2021-06-03 18:45 ` Matteo Croce [this message]
2021-06-04 7:52 ` Yunsheng Lin
2021-06-04 8:42 ` Ilias Apalodimas
2021-06-05 16:06 ` David Ahern
2021-06-05 16:34 ` Matteo Croce
2021-06-06 13:56 ` Tariq Toukan
2021-06-07 4:38 ` Ilias Apalodimas
2021-06-07 11:14 ` Tariq Toukan
2021-06-07 4:35 ` Ilias Apalodimas
2021-05-21 16:15 ` [PATCH net-next v6 4/5] mvpp2: recycle buffers Matteo Croce
2021-05-21 16:15 ` [PATCH net-next v6 5/5] mvneta: " Matteo Croce
2021-05-28 0:44 ` [PATCH net-next v6 0/5] page_pool: " Matteo Croce
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