From nobody Fri Dec 19 11:38:21 2025 Received: from dggsgout12.his.huawei.com (dggsgout12.his.huawei.com [45.249.212.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B9A2619005E; Tue, 9 Dec 2025 13:17:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765286274; cv=none; b=TYNSM2Aq2gHwKwO1d0C5WrA9tL3FadiT8LB+Nxnqxve0NV9/0wdXraOH4WsQ03NFe7m71b/F3wD0MFpnyjMTJkkAAqiPzyTXDbndndBzCLh4BnWP3KgikO1D+PdGWs/DBApfh55j6qanCIwHssNZ6RLvvCZ0MNS+eIfmUmH8nGw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765286274; c=relaxed/simple; bh=JpeHjh2D4RYEdBW/05l/FRoE07PGkVGpOYuGXfkpTcA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=MCHUm0jwZX4dMNvLf1OdNcpwQchd2uDIC6jr+MvETDu6xxPRPUB5WllNdt6mEFntsWi4YV+gIzfVlHMDg8aEPpARosIYU0DSon5ofuVDhlsi5hFB7Ga3UqtwMaKo1JYpLNtkqNLE7BPvsuGrjUPYZQKmWw0Vm6MmMHwREHdrM6Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=none smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout12.his.huawei.com (SkyGuard) with ESMTPS id 4dQfWj5QzPzKHMKd; Tue, 9 Dec 2025 21:16:49 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 4F7051A1A75; Tue, 9 Dec 2025 21:17:48 +0800 (CST) Received: from hulk-vt.huawei.com (unknown [10.67.174.121]) by APP1 (Coremail) with SMTP id cCh0CgAnYn5wIThpE+mPBA--.4181S3; Tue, 09 Dec 2025 21:17:48 +0800 (CST) From: Chen Ridong To: hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, akpm@linux-foundation.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, david@kernel.org, zhengqi.arch@bytedance.com, lorenzo.stoakes@oracle.com Cc: cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, lujialin4@huawei.com, chenridong@huaweicloud.com Subject: [PATCH -next 1/2] memcg: move mem_cgroup_usage memcontrol-v1.c Date: Tue, 9 Dec 2025 13:02:50 +0000 Message-Id: <20251209130251.1988615-2-chenridong@huaweicloud.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251209130251.1988615-1-chenridong@huaweicloud.com> References: <20251209130251.1988615-1-chenridong@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: cCh0CgAnYn5wIThpE+mPBA--.4181S3 X-Coremail-Antispam: 1UD129KBjvJXoWxJF1fZF1fWrW8Jw4fJFW5ZFb_yoW5XFW5pF sak3ZxZa1rJ398Wr4akFyDur9ava1Iqay5t3s7tryfZwnxtwn0q347t3yrAFW5CF97Xrnr Xws0yw1xGFWYkw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUHYb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUGw A2048vs2IY020Ec7CjxVAFwI0_Gr0_Xr1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV W8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMc Ij6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_ Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I 0E8cxan2IY04v7MxkF7I0En4kS14v26r4a6rW5MxAIw28IcxkI7VAKI48JMxAqzxv26xkF 7I0En4kS14v26r4a6rW5MxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr 0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVW8ZVWrXwCIc40Y0x0E wIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JV WxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAI cVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBIdaVFxhVjvjDU0xZFpf9x0piKsU_UUUUU= X-CM-SenderInfo: hfkh02xlgr0w46kxt4xhlfz01xgou0bp/ Content-Type: text/plain; charset="utf-8" From: Chen Ridong Currently, mem_cgroup_usage is only used for v1, just move it to memcontrol-v1.c Signed-off-by: Chen Ridong --- mm/memcontrol-v1.c | 22 ++++++++++++++++++++++ mm/memcontrol-v1.h | 2 -- mm/memcontrol.c | 22 ---------------------- 3 files changed, 22 insertions(+), 24 deletions(-) diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c index 6eed14bff742..0b50cb122ff3 100644 --- a/mm/memcontrol-v1.c +++ b/mm/memcontrol-v1.c @@ -427,6 +427,28 @@ static int mem_cgroup_move_charge_write(struct cgroup_= subsys_state *css, } #endif =20 +static unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap) +{ + unsigned long val; + + if (mem_cgroup_is_root(memcg)) { + /* + * Approximate root's usage from global state. This isn't + * perfect, but the root usage was always an approximation. + */ + val =3D global_node_page_state(NR_FILE_PAGES) + + global_node_page_state(NR_ANON_MAPPED); + if (swap) + val +=3D total_swap_pages - get_nr_swap_pages(); + } else { + if (!swap) + val =3D page_counter_read(&memcg->memory); + else + val =3D page_counter_read(&memcg->memsw); + } + return val; +} + static void __mem_cgroup_threshold(struct mem_cgroup *memcg, bool swap) { struct mem_cgroup_threshold_ary *t; diff --git a/mm/memcontrol-v1.h b/mm/memcontrol-v1.h index 6358464bb416..e92b21af92b1 100644 --- a/mm/memcontrol-v1.h +++ b/mm/memcontrol-v1.h @@ -22,8 +22,6 @@ iter !=3D NULL; \ iter =3D mem_cgroup_iter(NULL, iter, NULL)) =20 -unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap); - void drain_all_stock(struct mem_cgroup *root_memcg); =20 unsigned long memcg_events(struct mem_cgroup *memcg, int event); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index e2e49f4ec9e0..dbe7d8f93072 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3272,28 +3272,6 @@ void folio_split_memcg_refs(struct folio *folio, uns= igned old_order, css_get_many(&__folio_memcg(folio)->css, new_refs); } =20 -unsigned long mem_cgroup_usage(struct mem_cgroup *memcg, bool swap) -{ - unsigned long val; - - if (mem_cgroup_is_root(memcg)) { - /* - * Approximate root's usage from global state. This isn't - * perfect, but the root usage was always an approximation. - */ - val =3D global_node_page_state(NR_FILE_PAGES) + - global_node_page_state(NR_ANON_MAPPED); - if (swap) - val +=3D total_swap_pages - get_nr_swap_pages(); - } else { - if (!swap) - val =3D page_counter_read(&memcg->memory); - else - val =3D page_counter_read(&memcg->memsw); - } - return val; -} - static int memcg_online_kmem(struct mem_cgroup *memcg) { struct obj_cgroup *objcg; --=20 2.34.1