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bh=IE5DnVpdF1de3XX4dQ8FvyhXAn2YbDi95QhoG0JcATk=; b=J7xE2MdHqfbP937+Ww4wixg/L9FtvnUCY3IgLnh+pagK1hPayeHnGws1e+3HRb2rxdtZ/h xUvQB1b689ADiCmV0Apmyx3PO0Xplrczmf0iRBGZyX9ztfnUjQM94joAK2HkXmb0d0CEMn E7Uhq8lkT3ksAOu/IBd3zRxelazvvr2rZ6782h3MmIaCOWb7afO0EwpbR+mZkWcUB8AuzW m8HOBnj01+yq0pWY8LHJCxmddaw6JGraDdPwjIOMTyuPyiGbtT9mr4/LffoaDfFU4WuacG TqUL4WCi22ZwMgfZiDHPnG0XKt1KZvZgibnFnbCP3fMfIkayyq412AjAOqBKQQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1744698656; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=IE5DnVpdF1de3XX4dQ8FvyhXAn2YbDi95QhoG0JcATk=; b=Heuai6ntnKtatI5XsqHCHtmvLMSvI1cTyDEUJtoddyiOnXDRyKjhIzqhYBrtrHbCbVY/5p DWUkNrIGZFQccwDw== From: Sebastian Andrzej Siewior To: Shakeel Butt Cc: Vlastimil Babka , Andrew Morton , Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , Yosry Ahmed , Waiman Long , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, Meta kernel team Subject: Re: [PATCH] memcg: decouple memcg_hotplug_cpu_dead from stock_lock Message-ID: <20250415063054.jerbqGF8@linutronix.de> References: <20250410210623.1016767-1-shakeel.butt@linux.dev> <0e9e2d5d-ec64-4ad4-a184-0c53832ff565@suse.cz> <8cce9a28-3b02-4126-a150-532e92c0e7f8@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam01 X-Stat-Signature: fxq1h7efqirymu4hc3euktkwj8chaxje X-Rspam-User: X-Rspamd-Queue-Id: 5293C80008 X-HE-Tag: 1744698658-779707 X-HE-Meta: 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 LmiMKu42 RgkcGoHNgKzaoV0btqXwKklASD+I01uB5hw7KUutM3M/pyrBSDDYqLyVeN8m95qD4Q0/ZCyYTPTg6UKYqDS254qlnWZ/X3kuloEgNIx9BF+oWKdwpow7MuejB5wjlVpHcdcYXZLeMChw8Yngvow7UXOECT/fnEZOImscAvnh+fL+oO9EVik19yRCvM8GO9o9pVLr9TfctJSSnLZkrxsGJAcraGvmr1JQJbS4XXb+OBaOEhjaon5VXZHKSlg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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