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Tue, 30 Aug 2022 07:37:41 -0700 (PDT) From: xu xin X-Google-Original-From: xu xin To: akpm@linux-foundation.org, adobriyan@gmail.com, willy@infradead.org Cc: bagasdotme@gmail.com, hughd@google.com, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, xu xin Subject: [PATCH v5 0/2] ksm: count allocated rmap_items and update documentation Date: Tue, 30 Aug 2022 14:37:31 +0000 Message-Id: <20220830143731.299702-1-xu.xin16@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 ARC-Authentication-Results: i=1; imf26.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b="JS/iz1eH"; spf=pass (imf26.hostedemail.com: domain of cgel.zte@gmail.com designates 209.85.214.170 as permitted sender) smtp.mailfrom=cgel.zte@gmail.com; dmarc=pass (policy=none) header.from=gmail.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1661870262; a=rsa-sha256; cv=none; b=hEhzEammGsd6yb1x1UXfZTbbN8DjSfXyyVZwWemyUHap0tzYMYOAoOjoV42q7aoGGksx/6 N3l5VUSCAMw3Q+Z8UdxIAgvdbbWElBf7Jn5SghZ8c2iw8Z6j+SOeiJQ9jwwU/21JADmQNz atTWj06GP+DqPlbvjuTId6T+zIIU2IY= ARC-Message-Signature: i=1; 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To determine how beneficial the ksm-policy (like madvise), they are using brings, so we add a new interface /proc//ksm_stat for each process The value "ksm_rmap_items" in it indicates the total allocated ksm rmap_items of this process. The detailed description can be seen in the following patches' commit message. ----------- v4->v5: 1. change ksm_rmp_items to ksm_rmap_items; 2. use /proc/*/ksm_stat as proc name rather than "ksm_rmap_items" and start filling it with the value "ksm_rmap_items" so that more values can be added in future. v3->v4: Fix the wrong writing format and some misspellings of the related documentaion. v2->v3: remake the patches based on the latest linux-next branch. v1->v2: Add documentation for the new item. *** BLURB HERE *** xu xin (2): ksm: count allocated ksm rmap_items for each process ksm: add profit monitoring documentation Documentation/admin-guide/mm/ksm.rst | 36 ++++++++++++++++++++++++++++ fs/proc/base.c | 15 ++++++++++++ include/linux/mm_types.h | 5 ++++ mm/ksm.c | 2 ++ 4 files changed, 58 insertions(+)