netdev - Re: [PATCH net-next v6 1/4] net: wangxun: Add support for PTP clock

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Message-ID: <20250211160706.15eb0d2a@kernel.org>
Date: Tue, 11 Feb 2025 16:07:06 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Jiawen Wu <jiawenwu@...stnetic.com>
Cc: andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com,
 pabeni@...hat.com, richardcochran@...il.com, linux@...linux.org.uk,
 horms@...nel.org, jacob.e.keller@...el.com, netdev@...r.kernel.org,
 vadim.fedorenko@...ux.dev, mengyuanlou@...-swift.com
Subject: Re: [PATCH net-next v6 1/4] net: wangxun: Add support for PTP clock

On Sat,  8 Feb 2025 11:13:45 +0800 Jiawen Wu wrote:
> + * wx_ptp_tx_hwtstamp_work
> + * @work: pointer to the work struct
> + *
> + * This work item polls TSC_1588_CTL valid bit to determine when a Tx hardware
> + * timestamp has been taken for the current skb. It is necessary, because the
> + * descriptor's "done" bit does not correlate with the timestamp event.

Why not use the aux_work for this?
IIUC aux_work often has lower latency since it's a dedicated thread.