linux-kernel - Re: [PATCH v5 0/4] sched/fair: Idle load balancer fixes for fallouts from IPI optimization to TIF

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Message-ID: <20241119111530.GA2328@noisy.programming.kicks-ass.net>
Date: Tue, 19 Nov 2024 12:15:30 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: K Prateek Nayak <kprateek.nayak@....com>
Cc: Ingo Molnar <mingo@...hat.com>, Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Clark Williams <clrkwllms@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>, linux-kernel@...r.kernel.org,
	linux-rt-devel@...ts.linux.dev,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, Tejun Heo <tj@...nel.org>,
	NeilBrown <neilb@...e.de>, Jens Axboe <axboe@...nel.dk>,
	Frederic Weisbecker <frederic@...nel.org>,
	Zqiang <qiang.zhang1211@...il.com>,
	Caleb Sander Mateos <csander@...estorage.com>,
	"Gautham R . Shenoy" <gautham.shenoy@....com>,
	Chen Yu <yu.c.chen@...el.com>, Julia Lawall <Julia.Lawall@...ia.fr>
Subject: Re: [PATCH v5 0/4] sched/fair: Idle load balancer fixes for fallouts
 from IPI optimization to TIF_POLLING CPUs

On Tue, Nov 19, 2024 at 05:44:28AM +0000, K Prateek Nayak wrote:
> K Prateek Nayak (4):
>   softirq: Allow raising SCHED_SOFTIRQ from SMP-call-function on RT
>     kernel
>   sched/core: Remove the unnecessary need_resched() check in
>     nohz_csd_func()
>   sched/fair: Check idle_cpu() before need_resched() to detect ilb CPU
>     turning busy
>   sched/core: Prevent wakeup of ksoftirqd during idle load balance
> 

Thanks!, I'll stick them in a tree post -rc1.