From: Jakub Kicinski <kuba@kernel.org>
To: Maciek Machnikowski <maciek@machnikowski.net>
Cc: netdev@vger.kernel.org, richardcochran@gmail.com,
jacob.e.keller@intel.com, vadfed@meta.com, darinzon@amazon.com
Subject: Re: [RFC 0/3] ptp: Add esterror support
Date: Wed, 14 Aug 2024 17:41:47 -0700 [thread overview]
Message-ID: <20240814174147.761e1ea7@kernel.org> (raw)
In-Reply-To: <20240813125602.155827-1-maciek@machnikowski.net>
On Tue, 13 Aug 2024 12:55:59 +0000 Maciek Machnikowski wrote:
> This patch series implements handling of timex esterror field
> by ptp devices.
>
> Esterror field can be used to return or set the estimated error
> of the clock. This is useful for devices containing a hardware
> clock that is controlled and synchronized internally (such as
> a time card) or when the synchronization is pushed to the embedded
> CPU of a DPU.
>
> Current implementation of ADJ_ESTERROR can enable pushing
> current offset of the clock calculated by a userspace app
> to the device, which can act upon this information by enabling
> or disabling time-related functions when certain boundaries
> are not met (eg. packet launchtime)
Please do CC people who are working on the VM / PTP / vdso thing,
and time people like tglx. And an implementation for a real device
would be nice to establish attention.
next prev parent reply other threads:[~2024-08-15 0:41 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-13 12:55 [RFC 0/3] ptp: Add esterror support Maciek Machnikowski
2024-08-13 12:56 ` [RFC 1/3] ptp: Implement timex " Maciek Machnikowski
2024-08-14 9:29 ` Vadim Fedorenko
2024-08-15 9:33 ` Maciek Machnikowski
2024-08-14 11:46 ` Simon Horman
2024-08-15 9:32 ` Maciek Machnikowski
2024-08-15 4:23 ` Richard Cochran
2024-08-15 9:43 ` Maciek Machnikowski
2024-08-15 9:47 ` Maciek Machnikowski
2024-08-15 21:04 ` Richard Cochran
2024-08-16 16:01 ` kernel test robot
2024-08-17 5:40 ` kernel test robot
2024-08-13 12:56 ` [RFC 2/3] ptp: Implement support for esterror in ptp_mock Maciek Machnikowski
2024-08-13 12:56 ` [RFC 3/3] ptp: Add setting esterror and reading timex structure Maciek Machnikowski
2024-08-13 20:05 ` [RFC 0/3] ptp: Add esterror support Andrew Lunn
2024-08-14 8:44 ` Vadim Fedorenko
2024-08-14 13:08 ` Andrew Lunn
2024-08-14 15:08 ` Maciek Machnikowski
2024-08-15 3:53 ` Richard Cochran
2024-08-15 9:40 ` Maciek Machnikowski
2024-08-15 14:26 ` Andrew Lunn
2024-08-15 15:00 ` Maciek Machnikowski
2024-08-15 21:08 ` Richard Cochran
2024-08-15 22:06 ` Maciek Machnikowski
2024-08-15 23:11 ` Andrew Lunn
2024-08-16 4:13 ` Maciek Machnikowski
2024-08-17 4:29 ` Richard Cochran
2024-08-15 3:33 ` Richard Cochran
2024-08-15 4:16 ` Richard Cochran
2024-08-15 5:24 ` Miroslav Lichvar
2024-08-15 9:45 ` Maciek Machnikowski
2024-08-15 9:41 ` Maciek Machnikowski
2024-08-15 0:41 ` Jakub Kicinski [this message]
2024-08-15 3:42 ` Richard Cochran
2024-08-15 4:17 ` Richard Cochran
2024-08-15 9:35 ` Maciek Machnikowski
2024-08-15 10:29 ` Vadim Fedorenko
2024-08-15 11:40 ` Arinzon, David
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