From: Jesper Dangaard Brouer <jbrouer@redhat.com>
To: Jakub Kicinski <kuba@kernel.org>, Haiyang Zhang <haiyangz@microsoft.com>
Cc: brouer@redhat.com,
"linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
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KY Srinivasan <kys@microsoft.com>,
Paul Rosswurm <paulros@microsoft.com>,
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"ast@kernel.org" <ast@kernel.org>,
Ajay Sharma <sharmaajay@microsoft.com>,
"hawk@kernel.org" <hawk@kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"shradhagupta@linux.microsoft.com"
<shradhagupta@linux.microsoft.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>
Subject: Re: [PATCH net-next] net: mana: Add page pool for RX buffers
Date: Fri, 14 Jul 2023 09:43:04 +0200 [thread overview]
Message-ID: <85bfa818-6856-e3ea-ef4d-16646c57d1cc@redhat.com> (raw)
In-Reply-To: <20230713205326.5f960907@kernel.org>
On 14/07/2023 05.53, Jakub Kicinski wrote:
> On Thu, 13 Jul 2023 14:48:45 +0000 Haiyang Zhang wrote:
>> Add page pool for RX buffers for faster buffer cycle and reduce CPU
>> usage.
>>
>> Get an extra ref count of a page after allocation, so after upper
>> layers put the page, it's still referenced by the pool. We can reuse
>> it as RX buffer without alloc a new page.
>
> Please use the real page_pool API from include/net/page_pool.h
> We've moved past every driver reinventing the wheel, sorry.
+1
Quoting[1]: Documentation/networking/page_pool.rst
Basic use involves replacing alloc_pages() calls with the
page_pool_alloc_pages() call.
Drivers should use page_pool_dev_alloc_pages() replacing
dev_alloc_pages().
[1] https://kernel.org/doc/html/latest/networking/page_pool.html
next prev parent reply other threads:[~2023-07-14 7:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-13 14:48 [PATCH net-next] net: mana: Add page pool for RX buffers Haiyang Zhang
2023-07-14 3:53 ` Jakub Kicinski
2023-07-14 7:43 ` Jesper Dangaard Brouer [this message]
2023-07-14 12:51 ` Haiyang Zhang
2023-07-14 13:13 ` Jesper Dangaard Brouer
2023-07-14 15:31 ` Jakub Kicinski
2023-07-17 18:26 ` Haiyang Zhang
2023-07-17 23:59 ` Zhu Yanjun
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