From patchwork Thu Nov 23 07:19:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Rokosov X-Patchwork-Id: 13465872 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 B6011C61D85 for ; Thu, 23 Nov 2023 07:20:04 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 32C756B0653; Thu, 23 Nov 2023 02:20:04 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2DD596B0654; Thu, 23 Nov 2023 02:20:04 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1A41A6B0655; Thu, 23 Nov 2023 02:20:04 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 069506B0653 for ; Thu, 23 Nov 2023 02:20:04 -0500 (EST) Received: from smtpin23.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id D35E7C0EB8 for ; Thu, 23 Nov 2023 07:20:03 +0000 (UTC) X-FDA: 81488369886.23.885A06D Received: from mx1.sberdevices.ru (mx2.sberdevices.ru [45.89.224.132]) by imf23.hostedemail.com (Postfix) with ESMTP id 7B136140003 for ; Thu, 23 Nov 2023 07:20:00 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=salutedevices.com header.s=mail header.b=j0R1+coT; spf=pass (imf23.hostedemail.com: domain of ddrokosov@salutedevices.com designates 45.89.224.132 as permitted sender) smtp.mailfrom=ddrokosov@salutedevices.com; dmarc=pass (policy=quarantine) header.from=salutedevices.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1700724001; 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-type: content-transfer-encoding:content-transfer-encoding:in-reply-to: references:dkim-signature; bh=lZF9371oFwWHYclBtgIos+B4yi9eiNAnR9wB8hzCp2Y=; b=Nt82p3iCWQzFrEmT4lOvJHrxmFjaEQD52YziB+zVbAcsKKZXAFlAajqjrNh6H/VawzyxQ9 /YFH89OIoh5kim/oyg0ne2vIzmgY0PU7Sm+W55fcigygAgrxR+eeUTlT+VbhK1XrR7IJR5 EkcxWWm89ZM9QQUrkUYFB4Pw/D4wp1s= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1700724001; a=rsa-sha256; cv=none; b=KTMgGQG3yMTuiMz7DrZ2keWBdSu/gT0De9xNfiAHcIRRxemA+4WHSls2LOyJWTSz9jNNth w/ACYARATMabLR9iMFIwhSKQ00iQULa+BPQHE6W3sfAYe8AFgEFlutuK6/npcubP9rkmyD v8YE+kELyNco/cle9mRkLWqwJcm0LDI= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=salutedevices.com header.s=mail header.b=j0R1+coT; spf=pass (imf23.hostedemail.com: domain of ddrokosov@salutedevices.com designates 45.89.224.132 as permitted sender) smtp.mailfrom=ddrokosov@salutedevices.com; dmarc=pass (policy=quarantine) header.from=salutedevices.com Received: from p-infra-ksmg-sc-msk02 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id F3C7D120069; Thu, 23 Nov 2023 10:19:57 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru F3C7D120069 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1700723998; bh=lZF9371oFwWHYclBtgIos+B4yi9eiNAnR9wB8hzCp2Y=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=j0R1+coT6RwtVmEQ3JuUoAtNtwg94Qu3dV9y4OhXC3gmCvOVxw6UaFeLEIqQ/xUOB uoxORQsiuW8AQgq4iOaDwm4wqU8QgEepDzmKxq9lE9DROtAKFiwSZH7jMBjwV++dR0 3rBhQLXRJSAhxgUDba7Of6C1P0O/V97/Zssezj4vtXMR/zObBEEF1jcf4WIgnMGpKO d8jXsS/DXNisgI46uxFPL/IBmp/NqdQaw1nYTImFocDpmQUpU9gu3mUjpeYT1mqu9A GMCOtHivhxEeXZj4a387ghj/ef+mtnSIAdXH6XNzCOkFe7OLZvJ//zk7cYvsWS/6jV r+Hb0WJuX/RXg== Received: from p-i-exch-sc-m01.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Thu, 23 Nov 2023 10:19:57 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 23 Nov 2023 10:19:56 +0300 From: Dmitry Rokosov To: , , , , , CC: , , , , , , Dmitry Rokosov Subject: [PATCH v3 0/3] samples: introduce cgroup events listeners Date: Thu, 23 Nov 2023 10:19:42 +0300 Message-ID: <20231123071945.25811-1-ddrokosov@salutedevices.com> X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 181550 [Nov 23 2023] X-KSMG-AntiSpam-Version: 6.0.0.2 X-KSMG-AntiSpam-Envelope-From: ddrokosov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 3 0.3.3 e5c6a18a9a9bff0226d530c5b790210c0bd117c8, {Tracking_uf_ne_domains}, {Tracking_from_domain_doesnt_match_to}, d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.com:7.1.1;127.0.0.199:7.1.2;100.64.160.123:7.1.2;p-i-exch-sc-m01.sberdevices.ru:5.0.1,7.1.1;lore.kernel.org:7.1.1, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean, bases: 2023/11/23 06:48:00 X-KSMG-LinksScanning: Clean, bases: 2023/11/23 06:48:00 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/11/23 04:50:00 #22507336 X-KSMG-AntiVirus-Status: Clean, skipped X-Rspamd-Queue-Id: 7B136140003 X-Rspam-User: X-Stat-Signature: njw8qn641ru8wcracnrf7fw386ibjtg6 X-Rspamd-Server: rspam03 X-HE-Tag: 1700724000-647223 X-HE-Meta: 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 2ymgxaBR gLCBgWashNjE+PJpo4+90Zl0Oti/Mcas1LUxCGrm1XIaIsYtzXW3QILfbwHHCTfA/dOpj0iVO5KCqtDFI1C3Q2tNz8c2d3EtSutkeCbJujC/40qMJ3fVFRXg9ewRLgRJSrv/kQ2bMXGcKaBH3nurqOWuioqRlkpgF/jH+xm6YqYmdt2+EcdWOoh4VEu0NyS2qQPOOLqyknHj8nbIgH3oadlnrGDlbcOlbHZ6iu2XMI7gvz88OtBCZufpEWOpL3KznrcKEqADM/1I0KKVQx0xy8IPt/8fhz8xWXxLygpDStbcmKuOMi5RHLqfJ75L2Uu4ddcTXuMVwHKL+bB695gTAtoFVAVsLbfjvZ/NrKwKHAh2rW+UtXsGjspMEulLSBN9WcgN67VQCKmGYEvaKYNn83CCatjO7ufp8FkLWtk9QVcOMMFQ= 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: To begin with, this patch series relocates the cgroup example code to the samples/cgroup directory, which is the appropriate location for such code snippets. Furthermore, a new memcg events listener is introduced. This listener is a simple yet effective tool for monitoring memory events and managing counter changes during runtime. Additionally, as per Andrew Morton's suggestion, a helpful reminder comment is included in the memcontrol implementation. This comment serves to ensure that the samples code is updated whenever new events are added. Changes v3 since v2 at [2]: - rename cgroup_v2_event_listener to memcg_event_listener per Andrew's suggestion Changes v2 since v1 at [1]: - create new samples subdir - cgroup - move cgroup_event_listener for cgroup v1 to samples/cgroup - add a reminder comment to memcontrol implementation Links: [1] - https://lore.kernel.org/all/20231013184107.28734-1-ddrokosov@salutedevices.com/ [2] - https://lore.kernel.org/all/20231110082045.19407-1-ddrokosov@salutedevices.com/ Dmitry Rokosov (3): samples: introduce new samples subdir for cgroup samples/cgroup: introduce memcg memory.events listener mm: memcg: add reminder comment for the memcg v2 events MAINTAINERS | 1 + mm/memcontrol.c | 4 + samples/Kconfig | 6 + samples/Makefile | 1 + samples/cgroup/Makefile | 5 + .../cgroup/cgroup_event_listener.c | 0 samples/cgroup/memcg_event_listener.c | 330 ++++++++++++++++++ tools/cgroup/Makefile | 11 - 8 files changed, 347 insertions(+), 11 deletions(-) create mode 100644 samples/cgroup/Makefile rename {tools => samples}/cgroup/cgroup_event_listener.c (100%) create mode 100644 samples/cgroup/memcg_event_listener.c delete mode 100644 tools/cgroup/Makefile