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 X-Spam-Level: X-Spam-Status: No, score=-11.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DB919C433E3 for ; Tue, 18 Aug 2020 07:25:54 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 931962076E for ; Tue, 18 Aug 2020 07:25:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="TE8XGl1n" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 931962076E Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amazon.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2F2196B000C; Tue, 18 Aug 2020 03:25:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2A50D6B000D; Tue, 18 Aug 2020 03:25:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 192EA6B000E; Tue, 18 Aug 2020 03:25:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0181.hostedemail.com [216.40.44.181]) by kanga.kvack.org (Postfix) with ESMTP id 0005B6B000C for ; Tue, 18 Aug 2020 03:25:53 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id AA9651F1A for ; Tue, 18 Aug 2020 07:25:53 +0000 (UTC) X-FDA: 77162854986.30.rule03_1c1524c2701d Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin30.hostedemail.com (Postfix) with ESMTP id 7711B180B3C83 for ; Tue, 18 Aug 2020 07:25:53 +0000 (UTC) X-HE-Tag: rule03_1c1524c2701d X-Filterd-Recvd-Size: 8435 Received: from smtp-fw-9102.amazon.com (smtp-fw-9102.amazon.com [207.171.184.29]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Tue, 18 Aug 2020 07:25:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1597735553; x=1629271553; h=from:to:cc:subject:date:message-id:mime-version; bh=dL187gJ8qi2qXZXs1LP3LRzwm4jN5jl6FKrBM6p80Pw=; b=TE8XGl1nPrRSEEVeYxhg45C30dLKOmQa7PyUi8KGgfqNgO4MPdbg2nCU fI83hkc3s2LTn1RrlZfLQMiVice/zrCcwz63HLezidhnl982nZ7KqhCIj AOgZ7kT6PwO2g3+VeZ6SzPr81MnfglsDJSWklrfWOHJuUmgyjUejgTAbd A=; X-IronPort-AV: E=Sophos;i="5.76,326,1592870400"; d="scan'208";a="68776044" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1a-715bee71.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 18 Aug 2020 07:25:47 +0000 Received: from EX13MTAUEA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1a-715bee71.us-east-1.amazon.com (Postfix) with ESMTPS id 717B6A2466; Tue, 18 Aug 2020 07:25:35 +0000 (UTC) Received: from EX13D31EUA001.ant.amazon.com (10.43.165.15) by EX13MTAUEA001.ant.amazon.com (10.43.61.243) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 18 Aug 2020 07:25:34 +0000 Received: from u3f2cd687b01c55.ant.amazon.com (10.43.162.73) by EX13D31EUA001.ant.amazon.com (10.43.165.15) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 18 Aug 2020 07:25:18 +0000 From: SeongJae Park To: CC: SeongJae Park , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [RFC v7 00/10] DAMON: Support Physical Memory Address Space Monitoring Date: Tue, 18 Aug 2020 09:24:51 +0200 Message-ID: <20200818072501.30396-1-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.43.162.73] X-ClientProxiedBy: EX13D38UWB002.ant.amazon.com (10.43.161.171) To EX13D31EUA001.ant.amazon.com (10.43.165.15) X-Rspamd-Queue-Id: 7711B180B3C83 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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: From: SeongJae Park Changes from Previous Version ============================= - Use 42 as the fake target id for paddr instead of -1 - Fix a typo Introduction ============ DAMON[1] programming interface users can extend DAMON for any address space by configuring the address-space specific low level primitives with appropriate ones including their own implementations. However, because the implementation for the virtual address space is only available now, the users should implement their own for other address spaces. Worse yet, the user space users who rely on the debugfs interface and user space tool, cannot implement their own. This patchset implements another reference implementation of the low level primitives for the physical memory address space. With this change, hence, the kernel space users can monitor both the virtual and the physical address spaces by simply changing the configuration in the runtime. Further, this patchset links the implementation to the debugfs interface and the user space tool for the user space users. Note that the implementation supports only the user memory, as same to the idle page access tracking feature. [1] https://lore.kernel.org/linux-mm/20200706115322.29598-1-sjpark@amazon.com/ Baseline and Complete Git Trees =============================== The patches are based on the v5.8 plus DAMON v20 patchset[1] and DAMOS RFC v14 patchset[2]. You can also clone the complete git tree: $ git clone git://github.com/sjp38/linux -b cdamon/rfc/v7 The web is also available: https://github.com/sjp38/linux/releases/tag/cdamon/rfc/v7 [1] https://lore.kernel.org/linux-mm/20200817105137.19296-1-sjpark@amazon.com/ [2] https://lore.kernel.org/linux-mm/20200804142430.15384-1-sjpark@amazon.com/ Sequence of Patches =================== The sequence of patches is as follow. The first 5 patches allow the user space users manually set the monitoring regions. The 1st and 2nd patches implements the features in the debugfs interface and the user space tool . Following two patches each implement unittests (the 3rd patch) and selftests (the 4th patch) for the new feature. Finally, the 5th patch documents this new feature. Following 5 patches implement the physical memory monitoring. The 6th patch implements the low level primitives. The 7th and the 8th patches links the primitives to the debugfs and the user space tool, respectively. The 9th patch further implement a handy NUMA specific memory monitoring feature on the user space tool. Finally, the 10th patch documents this new features. Patch History ============= Changes from RFC v6 (https://lore.kernel.org/linux-mm/20200805065951.18221-1-sjpark@amazon.com/) - Use 42 as the fake target id for paddr instead of -1 - Fix typo Changes from RFC v5 (https://lore.kernel.org/linux-mm/20200707144540.21216-1-sjpark@amazon.com/) - Support nested iomem sections (Du Fan) - Rebase on v5.8 Changes from RFC v4 (https://lore.kernel.org/linux-mm/20200616140813.17863-1-sjpark@amazon.com/) - Support NUMA specific physical memory monitoring Changes from RFC v3 (https://lore.kernel.org/linux-mm/20200609141941.19184-1-sjpark@amazon.com/) - Export rmap functions - Reorganize for physical memory monitoring support only - Clean up debugfs code Changes from RFC v2 (https://lore.kernel.org/linux-mm/20200603141135.10575-1-sjpark@amazon.com/) - Support the physical memory monitoring with the user space tool - Use 'pfn_to_online_page()' (David Hildenbrand) - Document more detail on random 'pfn' and its safeness (David Hildenbrand) Changes from RFC v1 (https://lore.kernel.org/linux-mm/20200409094232.29680-1-sjpark@amazon.com/) - Provide the reference primitive implementations for the physical memory - Connect the extensions with the debugfs interface SeongJae Park (10): mm/damon/debugfs: Allow users to set initial monitoring target regions tools/damon: Support init target regions specification mm/damon-test: Add more unit tests for 'init_regions' selftests/damon/_chk_record: Do not check number of gaps Docs/admin-guide/mm/damon: Document 'init_regions' feature mm/damon: Implement callbacks for physical memory monitoring mm/damon/debugfs: Support physical memory monitoring tools/damon/record: Support physical memory monitoring tools/damon/record: Support NUMA specific recording Docs/DAMON: Document physical memory monitoring support Documentation/admin-guide/mm/damon/usage.rst | 77 +++- Documentation/vm/damon/design.rst | 29 +- Documentation/vm/damon/faq.rst | 5 +- include/linux/damon.h | 6 + mm/damon-test.h | 53 +++ mm/damon.c | 382 ++++++++++++++++++- tools/damon/_damon.py | 41 ++ tools/damon/_paddr_layout.py | 147 +++++++ tools/damon/record.py | 57 ++- tools/damon/schemes.py | 12 +- tools/testing/selftests/damon/_chk_record.py | 6 - 11 files changed, 770 insertions(+), 45 deletions(-) create mode 100644 tools/damon/_paddr_layout.py -- 2.17.1