linux-kernel - Re: [PATCH] memcg: decouple memcg_hotplug_cpu_dead from stock

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Message-ID: <20250415063054.jerbqGF8@linutronix.de>
Date: Tue, 15 Apr 2025 08:30:54 +0200
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Shakeel Butt <shakeel.butt@...ux.dev>
Cc: Vlastimil Babka <vbabka@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>,
	Roman Gushchin <roman.gushchin@...ux.dev>,
	Muchun Song <muchun.song@...ux.dev>,
	Yosry Ahmed <yosry.ahmed@...ux.dev>, Waiman Long <llong@...hat.com>,
	linux-mm@...ck.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Meta kernel team <kernel-team@...a.com>
Subject: Re: [PATCH] memcg: decouple memcg_hotplug_cpu_dead from stock_lock

On 2025-04-14 10:55:31 [-0700], Shakeel Butt wrote:
> Vlastimil & Sebastian, if you don't have a strong opinion/push-back on
> this patch then I will keep it as is. However I am planning to rework
> the memcg stats (& vmstats) to see if I can use dedicated local_lock for
> them and able to modify them in any context.

Please don't use local_irq_save().

Sebastian