linux-kernel - Re: [RFC PATCH 07/10] memcg: use __mod_memcg_state in drain_obj

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Message-ID: <20250314113852.O1pm0QWd@linutronix.de>
Date: Fri, 14 Mar 2025 12:38:52 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Shakeel Butt <shakeel.butt@...ux.dev>
Cc: 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>,
	Vlastimil Babka <vbabka@...e.cz>, linux-mm@...ck.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	Meta kernel team <kernel-team@...a.com>
Subject: Re: [RFC PATCH 07/10] memcg: use __mod_memcg_state in drain_obj_stock

On 2025-03-13 23:15:08 [-0700], Shakeel Butt wrote:
> For non-PREEMPT_RT kernels, drain_obj_stock() is always called with irq
> disabled, so we can use __mod_memcg_state() instead of
> mod_memcg_state(). For PREEMPT_RT, we need to add memcg_stats_[un]lock
> in __mod_memcg_state().
> 
> Signed-off-by: Shakeel Butt <shakeel.butt@...ux.dev>

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian