linux-kernel - Re: [PATCH v2] tick/nohz_full: turn tick_do_timer_boot_cpu into boot_cpu_is_nohz

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Message-ID: <Zl45Kc_c-ro41cYs@pavilion.home>
Date: Mon, 3 Jun 2024 23:44:09 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: Oleg Nesterov <oleg@...hat.com>
Cc: Ingo Molnar <mingo@...hat.com>, Nicholas Piggin <npiggin@...il.com>,
	Peter Zijlstra <peterz@...radead.org>, Phil Auld <pauld@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Chris von Recklinghausen <crecklin@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] tick/nohz_full: turn tick_do_timer_boot_cpu into
 boot_cpu_is_nohz_full

Le Mon, Jun 03, 2024 at 05:35:57PM +0200, Oleg Nesterov a écrit :
> We don't need to record the cpu number of the nohz_full boot CPU, a simple
> boolean is enough. We could even kill it, the "else if" branch could check
> tick_nohz_full_cpu(tick_do_timer_cpu) && !tick_nohz_full_cpu(cpu).
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>

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