linux-kernel - Re: [patch V2 06/26] ntp: Add support for auxiliary timekeepers

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Message-ID: <20250613082938-04b6c1ae-b5b9-4547-bb23-23fd0df81818@linutronix.de>
Date: Fri, 13 Jun 2025 08:32:30 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>, 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>, Kurt Kanzenbach <kurt@...utronix.de>, 
	Nam Cao <namcao@...utronix.de>, Antoine Tenart <atenart@...nel.org>
Subject: Re: [patch V2 06/26] ntp: Add support for auxiliary timekeepers

On Mon, May 19, 2025 at 10:33:21AM +0200, Thomas Gleixner wrote:
> If auxiliary clocks are enabled, provide an array of NTP data so that the
> auxiliary timekeepers can be steered independently of the core timekeeper.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> ---
>  kernel/time/ntp.c |   41 ++++++++++++++++++++++-------------------
>  1 file changed, 22 insertions(+), 19 deletions(-)

<snip>

>  void __init ntp_init(void)
>  {
> -	ntp_clear();
> +	for (int id = 0; id < TIMEKEEPERS_MAX; id++)
> +		__ntp_clear(tk_ntp_data + id);

For consistency with the rest of the code:

__ntp_clear(&tk_ntp_data[id]);

>  	ntp_init_cmos_sync();
>  }
>