From nobody Tue Feb 10 09:02:09 2026 Received: from mail-pf1-f195.google.com (mail-pf1-f195.google.com [209.85.210.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C337B278167; Tue, 22 Apr 2025 11:22:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.195 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745320979; cv=none; b=s1fmy80UEbXq3FUffIG8bfuT9/z8PZtYAyM9DJB2vTKzuZ/lBKs4KR5qdG/NQtVgEa7jKsLruTh3tRMjH34qCjcq/hyUUta0YFMsuIO0VYJ7yCRhjXCX4/5iguqe2aoZR4CWVGIPCfPJ0GWFxuaL0FZkYx8CB3bw7jKZMPjU4ZM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745320979; c=relaxed/simple; bh=pzRMD7fDKf99WmyFQqJWme1aUHdFSU9HM/xTQzrFw7s=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=u+1/dWweA0g28AAH8VuYtgXV1ZoS853ds9st8or7Wsfq/xnyk2OyFIvoELc/ydlnVl4sdP4FXkcwFOZpANPcUtyjIGwgREDu2BWoXRQtPNxCDANEnYbpnT31aHRb9s0fs/NTwxaquGVaIyY42GV5fWI3feHPowylIQ5jtpysqX8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=SJeGi9p4; arc=none smtp.client-ip=209.85.210.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SJeGi9p4" Received: by mail-pf1-f195.google.com with SMTP id d2e1a72fcca58-7399838db7fso4736823b3a.0; Tue, 22 Apr 2025 04:22:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1745320977; x=1745925777; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=aiGSkrm3DgewfYaP+Izlu7kFJeequ2GOc9ocYH0CLkc=; b=SJeGi9p4HqbQfsXOKRGSPp1jio1xxpXvcvcr59dNEMjJo+ireVqYGcwdGoE/O0Bxl/ +IWjLDMxtPn+LCQYkxTC+LyyddLxrCFT4pHQSLdGzRLEWWjJtdb6nPK5XqSxXP2rCo9t HLillhaajUuJrENz32Yl0LNKTjfVKoBouEmr/PSOSYsjNOvKy3kArcXLiifF73PuqHkx EOarv7v9dLKtC3kInf+Us/1smD/uYrOJlRBNAvtmXUvxBz/NWqvhuz63NTZzxxT5p5xu SGT6EKQEnwiQiyLnF9ZXrpHW6wKbBaL/JGJboKaT8Y2dQMpTmhWbEiqg/Xnn4tsTLL1l wJlQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1745320977; x=1745925777; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=aiGSkrm3DgewfYaP+Izlu7kFJeequ2GOc9ocYH0CLkc=; b=h5T0ySxHdJt0fOxpeWbBeqmV+L+ddtBwpHW3n/OPdRqkX7oGTL4bGOPe7fESIcKpK3 Foc29OF5J0dbveoN4KCe2N+YRfKbsZPbwIYNOSMZR+tNq7IdCx+75N5DlLUHtcl9dTrZ bJNMZ7qtPXy5lCUWUTaw9scclQF3C82dcfeauJeCrd/MjL4+0MFlcQ1soXfefcsd4neI MaxpQQrPpAggHapsCY7mH9/DjxXh4VKUam4JuIYqmli9C3x/rHVwGuk5VtU1Tk18n6N6 Y6oky5vZzoEfLSdN1pGvXD/3QUfl2aKCIOE4DxPRbDZ441Bzld+oXZyAp/XECJ2T99v3 DDEA== X-Forwarded-Encrypted: i=1; AJvYcCXCl7Uvl5YvYOEnxhorZXCbodpm88gBOTW2hcSRvzkxX1o5AtInWSM5eMd9Hfh5Asqzo3XBdRUrWa7OGEnR@vger.kernel.org, AJvYcCXQBJDiKikQpdfPhYkLAAIbMzESXZE1VG3FPggFbSvNo3O9CNYIF69ePMfn1fgi4ZRJJi8SldCWjEgMMaQi@vger.kernel.org X-Gm-Message-State: AOJu0YxFdDGXzO3mr5AFeMo/cDu9vU5QjZk+bm69HDumUiXWQ3BiA7Em fJ12UKG21CVvwy/nnUUl05wOKLXFgCNWMa8HXVQmCsgazVjolc2P X-Gm-Gg: ASbGncteMKK6xvfSIN2jaCvQYmNmdehUNp87GHoTwIh497K7VEuH+AmnSS3/CPv9D4/ VefNiuSPY/OZBYTk0h2jak+r94gdREBzHWk4LAnZgnGkfi3vjvx3aDJbEjLXZTOhtm1WCEb4+Tq aSHca85DXpDcdzWbL0Tis28M1R6wJ3kIeyJ8O0ar2hgmbW6F9M7eUYfyGyRZUa4WVQY1sjGatxY nYA0Ukgkwf4RJWzb1Uog4i0qwLmQL4ouhvPiZmUGLFrZZgR7Kmo+GITnZYe1elaUU8aB0B+Fm1U C5cKTs5/XPiA0BoRIwhGPF9Y0RgwnJDV5wpL18YkHL1QpcMeOlhtLQ== X-Google-Smtp-Source: AGHT+IGjecXBs7xBC0/rqoGxfRjHsEUBjW1ci/D+q51pdPyQkmzahn2l0dZlrCg3rUyHbG4WAEIaXA== X-Received: by 2002:a05:6a00:2c86:b0:736:4e14:8ec5 with SMTP id d2e1a72fcca58-73dc1b78556mr21412590b3a.11.1745320976914; Tue, 22 Apr 2025 04:22:56 -0700 (PDT) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-73dbf901143sm8318136b3a.73.2025.04.22.04.22.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Apr 2025 04:22:56 -0700 (PDT) From: xu xin X-Google-Original-From: xu xin To: xu.xin16@zte.com.cn Cc: akpm@linux-foundation.org, david@redhat.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, wang.yaxin@zte.com.cn, yang.yang29@zte.com.cn Subject: [PATCH RESEND 6/6] memcontrol-v1: add ksm_profit in cgroup/memory.ksm_stat Date: Tue, 22 Apr 2025 11:22:51 +0000 Message-Id: <20250422112251.3231599-1-xu.xin16@zte.com.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250422191407770210-193JBD0Fgeu5zqE2K@zte.com.cn> References: <20250422191407770210-193JBD0Fgeu5zqE2K@zte.com.cn> 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 Content-Type: text/plain; charset="utf-8" Users can obtain ksm_profit of a cgroup just by: / # cat /sys/fs/cgroup/memory.ksm_stat ksm_rmap_items 76800 ksm_zero_pages 0 ksm_merging_pages 76800 ksm_profit 309657600 Current implementation supports cgroup v1 temporarily; cgroup v2 compatibility is planned for future versions. Signed-off-by: xu xin --- mm/memcontrol-v1.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c index 7ee38d633d85..2cf2823c5514 100644 --- a/mm/memcontrol-v1.c +++ b/mm/memcontrol-v1.c @@ -1827,6 +1827,7 @@ struct memcg_ksm_stat { unsigned long ksm_rmap_items; long ksm_zero_pages; unsigned long ksm_merging_pages; + long ksm_profit; }; =20 static int evaluate_memcg_ksm_stat(struct task_struct *task, void *arg) @@ -1839,6 +1840,7 @@ static int evaluate_memcg_ksm_stat(struct task_struct= *task, void *arg) ksm_stat->ksm_rmap_items +=3D mm->ksm_rmap_items; ksm_stat->ksm_zero_pages +=3D mm_ksm_zero_pages(mm); ksm_stat->ksm_merging_pages +=3D mm->ksm_merging_pages; + ksm_stat->ksm_profit +=3D ksm_process_profit(mm); mmput(mm); } =20 @@ -1854,6 +1856,7 @@ static int memcg_ksm_stat_show(struct seq_file *m, vo= id *v) ksm_stat.ksm_rmap_items =3D 0; ksm_stat.ksm_zero_pages =3D 0; ksm_stat.ksm_merging_pages =3D 0; + ksm_stat.ksm_profit =3D 0; =20 /* summing all processes'ksm statistic items of this cgroup hierarchy */ mem_cgroup_scan_tasks(memcg, evaluate_memcg_ksm_stat, &ksm_stat); @@ -1861,6 +1864,7 @@ static int memcg_ksm_stat_show(struct seq_file *m, vo= id *v) seq_printf(m, "ksm_rmap_items %lu\n", ksm_stat.ksm_rmap_items); seq_printf(m, "ksm_zero_pages %ld\n", ksm_stat.ksm_zero_pages); seq_printf(m, "ksm_merging_pages %ld\n", ksm_stat.ksm_merging_pages); + seq_printf(m, "ksm_profit %ld\n", ksm_stat.ksm_profit); =20 return 0; } --=20 2.39.3