linux-kernel - Re: [patch V2 05/26] time: Introduce auxiliary POSIX clocks

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Message-ID: <CANDhNCqSbz39AN5Pp_1+YzW4jgO-089=L5WzgBrb077KTz4LYw@mail.gmail.com>
Date: Thu, 12 Jun 2025 17:06:21 -0700
From: John Stultz <jstultz@...gle.com>
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>, 
	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>
Subject: Re: [patch V2 05/26] time: Introduce auxiliary POSIX clocks

On Mon, May 19, 2025 at 1:33 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> From: Anna-Maria Behnsen <anna-maria@...utronix.de>
>
> To support auxiliary timekeeping and the related user space interfaces,
> it's required to define a clock ID range for them.
>
> Reserve 8 auxiliary clock IDs after the regular timekeeping clock ID space.
>
> This is the maximum number of auxiliary clocks the kernel can support. The actual
> number of supported clocks depends obviously on the presence of related devices
> and might be constraint by the available VDSO space.
>
> Add the corresponding timekeeper IDs as well.
>
> Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

Acked-by: John Stultz <jstultz@...gle.com>

thanks
-john