From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Xiaolong Ye <xiaolong.ye@intel.com>,
John McNamara <john.mcnamara@intel.com>,
Marko Kovacevic <marko.kovacevic@intel.com>,
Qi Zhang <qi.z.zhang@intel.com>
Cc: Karlsson Magnus <magnus.karlsson@intel.com>,
Topel Bjorn <bjorn.topel@intel.com>,
yuan.peng@intel.com, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v3] net/af_xdp: support need wakeup feature
Date: Thu, 27 Jun 2019 19:22:29 +0100 [thread overview]
Message-ID: <d965c654-d331-be7d-3d2d-285b285e43ed@intel.com> (raw)
In-Reply-To: <20190621131915.46662-1-xiaolong.ye@intel.com>
On 6/21/2019 2:19 PM, Xiaolong Ye wrote:
> This patch enables need_wakeup flag for Tx and fill rings, when this flag
> is set by the driver, it means that the userspace application has to
> explicitly wake up the kernel Rx or kernel Tx processing by issuing a
> syscall. Poll() can wake up both and sendto() or its alternatives will wake
> up Tx processing only.
>
> This feature is to provide efficient support for case that application and
> driver executing on the same core.
>
> Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
> ---
> v3 changes:
>
> 1. add introduction in 19.08 release note
>
> v2 changes:
>
> 1. remove need_wakeup devarg to make need_wakeup feature enabled
> unconditionally.
> 2. add conditional compilation directive to avoid breaking build with
> kernel which doesn't support need_wakeup feature yet.
>
> Note:
>
> Original busy poll feature has morphed into need_wakeup flag in
> kernel side, the main purpose is the same, that is to support both
> application and driver executing on the same core efficiently.
> doc/guides/rel_notes/release_19_08.rst | 2 ++
> drivers/net/af_xdp/rte_eth_af_xdp.c | 41 +++++++++++++++++++-------
Hi Xiaolong,
Can you please document this feature in af_xdp documentation? And if there
specific kernel version requirement for this, can you please add this
information too?
next prev parent reply other threads:[~2019-06-27 18:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-17 14:23 [dpdk-dev] [PATCH v1] " Xiaolong Ye
2019-06-17 8:03 ` David Marchand
2019-06-17 15:27 ` Ye Xiaolong
2019-06-17 8:51 ` David Marchand
2019-06-17 10:05 ` Bruce Richardson
2019-06-17 15:39 ` Ye Xiaolong
2019-06-18 8:51 ` [dpdk-dev] [PATCH v2] " Xiaolong Ye
2019-06-21 13:19 ` [dpdk-dev] [PATCH v3] " Xiaolong Ye
2019-06-27 18:22 ` Ferruh Yigit [this message]
2019-06-28 8:35 ` Ye Xiaolong
2019-06-28 10:07 ` [dpdk-dev] [PATCH v4] " Xiaolong Ye
2019-06-28 17:58 ` Ferruh Yigit
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