linux-kernel - Re: [PATCH v11 13/20] timers: Add get next timer interrupt functionality for remote CPUs

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Date: Wed, 21 Feb 2024 21:50:26 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: Anna-Maria Behnsen <anna-maria@...utronix.de>
Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
	John Stultz <jstultz@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Eric Dumazet <edumazet@...gle.com>,
	"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
	Arjan van de Ven <arjan@...radead.org>,
	"Paul E . McKenney" <paulmck@...nel.org>,
	Rik van Riel <riel@...riel.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Sebastian Siewior <bigeasy@...utronix.de>,
	Giovanni Gherdovich <ggherdovich@...e.cz>,
	Lukasz Luba <lukasz.luba@....com>,
	"Gautham R . Shenoy" <gautham.shenoy@....com>,
	Srinivas Pandruvada <srinivas.pandruvada@...el.com>,
	K Prateek Nayak <kprateek.nayak@....com>,
	Christian Loehle <christian.loehle@....com>
Subject: Re: [PATCH v11 13/20] timers: Add get next timer interrupt
 functionality for remote CPUs

Le Wed, Feb 21, 2024 at 10:05:41AM +0100, Anna-Maria Behnsen a écrit :
> To prepare for the conversion of the NOHZ timer placement to a pull at
> expiry time model it's required to have functionality available getting the
> next timer interrupt on a remote CPU.
> 
> Locking of the timer bases and getting the information for the next timer
> interrupt functionality is split into separate functions. This is required
> to be compliant with lock ordering when the new model is in place.
> 
> Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>

Reviewed-by: Frederic Weisbecker <frederic@...nel.org>