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Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1t68X6-0000000DDen-2WSw; Wed, 30 Oct 2024 13:14:44 +0000 Date: Wed, 30 Oct 2024 13:14:44 +0000 From: Matthew Wilcox To: gutierrez.asier@huawei-partners.com Cc: akpm@linux-foundation.org, david@redhat.com, ryan.roberts@arm.com, baohua@kernel.org, peterx@redhat.com, hannes@cmpxchg.org, hocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, stepanov.anatoly@huawei.com, alexander.kozhevnikov@huawei-partners.com, guohanjun@huawei.com, weiyongjun1@huawei.com, wangkefeng.wang@huawei.com, judy.chenhui@huawei.com, yusongping@huawei.com, artem.kuzin@huawei.com, kang.sun@huawei.com Subject: Re: [RFC PATCH 0/3] Cgroup-based THP control Message-ID: References: <20241030083311.965933-1-gutierrez.asier@huawei-partners.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241030083311.965933-1-gutierrez.asier@huawei-partners.com> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 97C1A4000E X-Stat-Signature: 4bkbhm78d96fwms8ehxyjaxazu5x66bg X-Rspam-User: X-HE-Tag: 1730294060-680121 X-HE-Meta: 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 jeyy5EzB co4tT3ifaPVQ9IwZxfTPj9+Q6M0Fwi+jz1QKVTMqSMNCR/NG6KDmBatABSLl3NVC5NiXa+aDoipHBwiJ2RLcXbdPJQ3+A9iw5fKwLOdeUzP8jktsm70ZWi9qdGrIouc1sPUpiu/lpawIbpU71OfjsZQNKnZc1cKeKlSIjdOLG5QKd+9pZQZV7di/rOFQN74nyuKAmyK5iuG5YrjaO7ofxjZ3nGWgoz6vT49Uvz4BTKgz/14OP3GykUOUQRNPrtZ1LWygqlzsvZXXfcm6zTxGBozXUpisRlI59E0v2 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 Wed, Oct 30, 2024 at 04:33:08PM +0800, gutierrez.asier@huawei-partners.com wrote: > From: Asier Gutierrez > > Currently THP modes are set globally. It can be an overkill if only some > specific app/set of apps need to get benefits from THP usage. Moreover, various > apps might need different THP settings. Here we propose a cgroup-based THP > control mechanism. Or maybe we should stop making the sysadmin's life so damned hard and figure out how to do without all of these settings?