From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AEFDC369C2 for ; Tue, 22 Apr 2025 11:23:01 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 815EA6B0007; Tue, 22 Apr 2025 07:22:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 79FF46B0022; Tue, 22 Apr 2025 07:22:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 61A2E6B0023; Tue, 22 Apr 2025 07:22:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 442EB6B0007 for ; Tue, 22 Apr 2025 07:22:58 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 1DD951C8A20 for ; Tue, 22 Apr 2025 11:23:00 +0000 (UTC) X-FDA: 83361442920.01.E2FEC81 Received: from mail-pf1-f196.google.com (mail-pf1-f196.google.com [209.85.210.196]) by imf26.hostedemail.com (Postfix) with ESMTP id 21350140008 for ; Tue, 22 Apr 2025 11:22:57 +0000 (UTC) Authentication-Results: imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b=YyH3b2Mw; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf26.hostedemail.com: domain of xu.xin.sc@gmail.com designates 209.85.210.196 as permitted sender) smtp.mailfrom=xu.xin.sc@gmail.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745320978; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=aiGSkrm3DgewfYaP+Izlu7kFJeequ2GOc9ocYH0CLkc=; b=DxWg71zvXmEcOx2lSexF2rsEm447FnWgphdttJNwWyOPKrWUDtNL7OQmwy7wLt6auWg0Kq AfXxMdL4xqK2blEQLmSDIDsfvIOGp9ttedHi9raqYq6yAeSQ3byhCE6p9RHD3YrpiiARb1 xR0I2temsW3d3AcZelrXX0Eef5qWK7M= ARC-Authentication-Results: i=1; imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20230601 header.b=YyH3b2Mw; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf26.hostedemail.com: domain of xu.xin.sc@gmail.com designates 209.85.210.196 as permitted sender) smtp.mailfrom=xu.xin.sc@gmail.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1745320978; a=rsa-sha256; cv=none; b=7tUUSK5wAdMH6Q6KJxnnJMudQRIK1wV9NJbf/qW+dB4tnr0bdkNVPzWG28mS/RKoMRrPSS 4WOXVk6xrwl94bA8QNNsHMsxZilGkJ4GefktAVOxU63EZ/LvIAhBL+GDwYutl2nq5vNPek EqdcuxZjgfoMxHMUmLailgTTx5Ga0M4= Received: by mail-pf1-f196.google.com with SMTP id d2e1a72fcca58-7398d65476eso3934342b3a.1 for ; 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=kvack.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=YyH3b2Mw2AvHLNX5Ww3E5YujQIvR24Hv9n0s+2wWJIB3Y57krcx4BK/PbLoiZEs8xG IVafduFfPpFUMH1l7I5cVL77Nt9sMgX5xDTbVT0ik1Nh6JMkB6KkpRuOWRW5Z/iEsGLj nF3YCYZvBI/mVd7yBS3BXMIWzmvJJDnVgzePCTM8H0G6O8pfWT6D8I5l/ZsIRX4oGWNc tVkwU+nc1IdabvPJbnHEuuA/svlNA1JehopCoAhfsqbyHboDWyPM2NzyGBpGZA1E+DaQ d0IfocTCEbg3Pdrc1wgmlPKe3E5Mnofam7ST5o8S3f2LVb5VWnmxFY+W+OWqEGi1NGyS hFYg== 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=UgSrqEZt8tZH9frlku0f5rtA8YcJub4+5VtMvhXEWUXOTORar8w+UqRJG2omhEXFLV iy5QNbAM/fKUyK3akmRRBvhKJJCcmNe8DMwfY6cim4+7VFCzvslFwhO3lWQs22T1rOwl bwRbgaTkquU7T2sqBctp2DGMuOwFpd23Nh1U8tB/hMso42ShIuQMv0bmc8LbJyHbS487 l9w/QhRuZdjGen1y3zYHRX2HqctxzjGtzco1pVjLDKnO1caFzlNvvVx2Skv/L56sPQ9I mD+u2MnXhNyw99HKyjlkfmbwwf+68kwGKYxoRfWndFqO+kou2p1pAYCg/0RIWQeb/lXg bDgg== X-Forwarded-Encrypted: i=1; AJvYcCWfnWjZJ5ZWprzSZxmJZ0JtWvVd+vLlw5nPQgnIKmSBJdSFZCOcfTjticm5MFX/SJ8JbqLBf2PniA==@kvack.org X-Gm-Message-State: AOJu0YxYmNP+VIdZ+cPuZdmgxkPe+gWnZp28tLAEh1KC93uslDPcl6sb QFAtwOK5/ytQs4kn9EDiQXy2dgBDglX+FiIly28OpTCmUwgOvB1x X-Gm-Gg: ASbGncs8ZNazXWHAldaYkfAGcU2HEawJcpxDT2JcMq1MB5t55ePOhFty0Fji2Hlt/O7 Fd3se+OCdkguLFmd1yjmuL2Y3F84NXbe1fhMxDXizE6Oq5L1FHLpDEif2CLystmXKdOqQAFBbkO FvXF+uNXRgAuhzUv5d7732vzPWnp+EUP2ozDqyePvlDAhzsjM5Cez7dWfMx3QNWWGuZaNKZGOUL Il5hepFsWojNtickpKVSKfXpzk4AOPLz1lhwwVd4f9ApFzWu4+XWtLCsf79NCtXOhRjFUK3Vp/j wg/1HifOx3kP0i08eabCNQj+ytpiyKFHBBlSklGv4juQJlCinyD/Kg== 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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 8q9osx317756b8wtkbh14x46hhuujc8k X-Rspamd-Queue-Id: 21350140008 X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1745320977-808033 X-HE-Meta: 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 Z9P4XurW 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 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: 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; }; 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 += mm->ksm_rmap_items; ksm_stat->ksm_zero_pages += mm_ksm_zero_pages(mm); ksm_stat->ksm_merging_pages += mm->ksm_merging_pages; + ksm_stat->ksm_profit += ksm_process_profit(mm); mmput(mm); } @@ -1854,6 +1856,7 @@ static int memcg_ksm_stat_show(struct seq_file *m, void *v) ksm_stat.ksm_rmap_items = 0; ksm_stat.ksm_zero_pages = 0; ksm_stat.ksm_merging_pages = 0; + ksm_stat.ksm_profit = 0; /* 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, void *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); return 0; } -- 2.39.3