From: Vinicius Costa Gomes <vinicius.gomes@intel.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: vladimir.oltean@nxp.com, kurt@linutronix.de,
anthony.l.nguyen@intel.com, kernel@pengutronix.de,
intel-wired-lan@lists.osuosl.org, jzi@pengutronix.de
Subject: Re: [Intel-wired-lan] [PATCH next-queue v1 3/3] igc: Use ptp->aux_worker to retrieve TX timestamps
Date: Mon, 13 Mar 2023 15:13:12 -0700 [thread overview]
Message-ID: <87edpsi9l3.fsf@intel.com> (raw)
In-Reply-To: <20230313100207.ztxhu3cbxkb5c6iy@pengutronix.de>
Hi,
Marc Kleine-Budde <mkl@pengutronix.de> writes:
> On 27.02.2023 21:45:34, Vinicius Costa Gomes wrote:
>> ptp->aux_worker is a kthread and allows the user to set it's priority,
>> which is useful for workloads that time synchronization is required.
>>
>> As an optimization, when the interrupt is handled try to retrieve the
>> timestamps "inline", if they are not, schedule the workload. This
>> should reduce the delay before the TX timestamp is available to
>> userspace.
>>
>> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
>
> Can this optimization also be applied to the igb?
>
The idea behind this optimization applies, but I think that also
introducing something like patch 1/3 (the spinlock) would make the code
easier to reason about.
Cheers,
--
Vinicius
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next prev parent reply other threads:[~2023-03-13 22:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-28 5:45 [Intel-wired-lan] [PATCH next-queue v1 0/3] igc: Add support for multiple TX tstamp requests Vinicius Costa Gomes
2023-02-28 5:45 ` [Intel-wired-lan] [PATCH next-queue v1 1/3] igc: Fix race condition in PTP tx code Vinicius Costa Gomes
2023-02-28 17:33 ` Vladimir Oltean
2023-03-09 21:33 ` Vinicius Costa Gomes
[not found] ` <20230313095648.czf4so6qpkcotqq4@pengutronix.de>
2023-03-14 19:19 ` Vinicius Costa Gomes
2023-02-28 5:45 ` [Intel-wired-lan] [PATCH next-queue v1 2/3] igc: Add support for multiple in-flight TX timestamps Vinicius Costa Gomes
2023-02-28 17:45 ` Vladimir Oltean
2023-03-09 21:39 ` Vinicius Costa Gomes
2023-02-28 5:45 ` [Intel-wired-lan] [PATCH next-queue v1 3/3] igc: Use ptp->aux_worker to retrieve " Vinicius Costa Gomes
2023-02-28 18:16 ` Vladimir Oltean
2023-03-09 21:58 ` Vinicius Costa Gomes
[not found] ` <20230313100207.ztxhu3cbxkb5c6iy@pengutronix.de>
2023-03-13 22:13 ` Vinicius Costa Gomes [this message]
2023-02-28 18:27 ` [Intel-wired-lan] [PATCH next-queue v1 0/3] igc: Add support for multiple TX tstamp requests Vladimir Oltean
2023-03-09 22:57 ` Vinicius Costa Gomes
2023-03-22 16:03 ` Miroslav Lichvar
2023-03-22 21:46 ` Vinicius Costa Gomes
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