netdev - [patch V2 0/3] ptp: Provide support for auxiliary clocks for PTP_SYS_OFFSET

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Message-ID: <20250701130923.579834908@linutronix.de>
Date: Tue,  1 Jul 2025 15:26:56 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: netdev@...r.kernel.org,
 Richard Cochran <richardcochran@...il.com>,
 Christopher Hall <christopher.s.hall@...el.com>,
 John Stultz <jstultz@...gle.com>,
 Frederic Weisbecker <frederic@...nel.org>,
 Anna-Maria Behnsen <anna-maria@...utronix.de>,
 Miroslav Lichvar <mlichvar@...hat.com>,
 Werner Abt <werner.abt@...nberg-usa.com>,
 David Woodhouse <dwmw2@...radead.org>,
 Stephen Boyd <sboyd@...nel.org>,
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>,
 Kurt Kanzenbach <kurt@...utronix.de>,
 Nam Cao <namcao@...utronix.de>,
 Antoine Tenart <atenart@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>
Subject: [patch V2 0/3] ptp: Provide support for auxiliary clocks for
 PTP_SYS_OFFSET_EXTENDED

This is a follow up to the V1 series, which can be found here:

     https://lore.kernel.org/all/20250626124327.667087805@linutronix.de

to address the merge logistics problem, which I created myself.

Changes vs. V1:

    - Make patch 1, which provides the timestamping function temporarily
      define CLOCK_AUX* if undefined so that it can be merged independently,

    - Add a missing check for CONFIG_POSIX_AUX_CLOCK in the PTP IOCTL

    - Picked up tags

Merge logistics if agreed on:

    1) Patch #1 is applied to the tip tree on top of plain v6.16-rc1 and
       tagged

    2) That tag is merged into tip:timers/ptp and the temporary CLOCK_AUX
       define is removed in a subsequent commit

    3) Network folks merge the tag and apply patches #2 + #3

So the only fallout from this are the extra merges in both trees and the
cleanup commit in the tip tree. But that way there are no dependencies and
no duplicate commits with different SHAs.

Thoughts?

Due to the above constraints there is no branch offered to pull from right
now. Sorry for the inconveniance. Should have thought about that earlier.

Thanks,

	tglx
---
 drivers/ptp/ptp_chardev.c        |   24 +++++++++++++++++++-----
 include/linux/ptp_clock_kernel.h |   34 ++++------------------------------
 include/linux/timekeeping.h      |   10 ++++++++++
 kernel/time/timekeeping.c        |   33 +++++++++++++++++++++++++++++++++
 4 files changed, 66 insertions(+), 35 deletions(-)