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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4ACCFCAC5A5 for ; Thu, 25 Sep 2025 05:03:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A5EF88E0006; Thu, 25 Sep 2025 01:03:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A3CF78E0001; Thu, 25 Sep 2025 01:03:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 925338E0006; Thu, 25 Sep 2025 01:03:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 81A798E0001 for ; Thu, 25 Sep 2025 01:03:44 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 1430258505 for ; Thu, 25 Sep 2025 05:03:44 +0000 (UTC) X-FDA: 83926579968.06.89A3057 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf14.hostedemail.com (Postfix) with ESMTP id 88974100002 for ; Thu, 25 Sep 2025 05:03:41 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=oC+v0ig0; spf=pass (imf14.hostedemail.com: domain of donettom@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=donettom@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1758776621; 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:in-reply-to:references:references:dkim-signature; bh=dsocIPbLYE3LByXqgbRBeV6KVt1ja7Me2A6VAGSZcGM=; b=OX6oeX43gMxhDhKZIExmH2W7B/uTFgMjz1O74mKuENZWXfJV4T+uiUBYft0nBr3EI8D0Va 00uirrF+6EOagrr2OA5nwRh3GSJtchmP9LNXR7rHeO843SfO8Aw7IX4MFSNY9luvsZW0sY IL+t50Nt19mpMuVafyz6z0wyRNm/kpA= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1758776621; a=rsa-sha256; cv=none; b=lgnibmdAvaNfvPiCQ4IiXaLHpVkwkCuWucOkjLGoAKpbu56S00kzT+7bZRj4+WvYc3FQ97 iReAe7LbC4/EIretPChXEmS2vemjJ04n3npNvT8F/OZE6CDqryLaSmT5AZda7LyHgY6ljB LxqvVn/PI/Q1mefSsXEx/nxUgs4aDqg= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=ibm.com header.s=pp1 header.b=oC+v0ig0; spf=pass (imf14.hostedemail.com: domain of donettom@linux.ibm.com designates 148.163.156.1 as permitted sender) smtp.mailfrom=donettom@linux.ibm.com; dmarc=pass (policy=none) header.from=ibm.com Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 58OILbJ9002011; Thu, 25 Sep 2025 05:03:34 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=dsocIP bLYE3LByXqgbRBeV6KVt1ja7Me2A6VAGSZcGM=; b=oC+v0ig0UiYj64tH8OaZ2U 2X9ZkJ/KBNgwQYSlcp9M6uO0cPajTbmDW786+F7Y9uhCcaQms4QJLJi9in0qenUm rEPHb7W8iadOF1SipT/Cc0eMSKRLffxB7jKrKFWI0vyVsgeudYCmZePdR7uYu+oc fNcZur7gbOfHnCvvy3q7UXCtSBGQ0gcR4xem0rt47QnehDEZ2hJp4nswScuGbwtf Sy0T4Ejt7Dm7YKZtOiQdmD4+4uEXlt9O2KLiAUFH2/np+8AvIO2UXQjnAK3c3bZw bvG6nIywdWbagaw8bZTXtpnmrdzqdZKn+yZSf1qNtR6XzCsiTUmJmhP2xISgBSKQ == Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 499ksc3mff-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Sep 2025 05:03:33 +0000 (GMT) Received: from m0360083.ppops.net (m0360083.ppops.net [127.0.0.1]) by pps.reinject (8.18.1.12/8.18.0.8) with ESMTP id 58P4wAI8028338; Thu, 25 Sep 2025 05:03:33 GMT Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 499ksc3mfd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Sep 2025 05:03:32 +0000 (GMT) Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 58P11LqO031109; Thu, 25 Sep 2025 05:03:31 GMT Received: from smtprelay02.wdc07v.mail.ibm.com ([172.16.1.69]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 49b9vdd3ua-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Sep 2025 05:03:31 +0000 Received: from smtpav03.wdc07v.mail.ibm.com (smtpav03.wdc07v.mail.ibm.com [10.39.53.230]) by smtprelay02.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 58P53UQA21627608 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Sep 2025 05:03:30 GMT Received: from smtpav03.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1E7055805D; Thu, 25 Sep 2025 05:03:30 +0000 (GMT) Received: from smtpav03.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7798B5805A; Thu, 25 Sep 2025 05:03:24 +0000 (GMT) Received: from [9.124.219.167] (unknown [9.124.219.167]) by smtpav03.wdc07v.mail.ibm.com (Postfix) with ESMTP; Thu, 25 Sep 2025 05:03:24 +0000 (GMT) Message-ID: Date: Thu, 25 Sep 2025 10:33:22 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] drivers/base/node: merge unregister_one_node() and unregister_node() to a single function. To: Christophe Leroy , Andrew Morton , David Hildenbrand , Oscar Salvador Cc: Ritesh Harjani , Aboorva Devarajan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Madhavan Srinivasan , linuxppc-dev@lists.ozlabs.org, Peter Zijlstra , Ingo Molnar , x86@kernel.org, Greg Kroah-Hartman , Danilo Krummrich , Mike Rapoport , Dave Jiang References: Content-Language: en-US From: Donet Tom In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: zFQNQipvWXY2e91Gr6_KzHBSU-SaiQL1 X-Proofpoint-GUID: 5JS2pehr0NJlUuVT0owfmnUYDvwklON5 X-Authority-Analysis: v=2.4 cv=SdH3duRu c=1 sm=1 tr=0 ts=68d4cd25 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=VnNF1IyMAAAA:8 a=u769cWuDflkTXPMc6NMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTIwMDAyMCBTYWx0ZWRfX3toRuaPFu7uu 3AdFGEMKOto9+xmvqHc5QukHHmt+qeuRMTCrTELUFHRI4wxcSvLAEcpSjWzJy9752YUiSNjrIyl VWggyP17oq0XUZ9RAoPP3zCPpjIaiypP92Fwb7yXFyhfFc7DAaxTB4w+F4WO2bmvN6/64YufxXy y7plHlfj83MMH/rBxW69IPH8xdyY1f6KYmKaDsxjE9o7ClMDbIyGFblc+p6s5AlATABSpZqmVSx fSorXYlqHseOSt5Jetx1tDEj+chrO8KuySOqCDNNuIqWsD8knvCmTsyLwHAC+6mwMO6vhNQWeW3 oaUcWA1XpiSMQ8/VsQYehd5vDIkcvmwazSvVFRcWvV9a6Gl97V5H9OUjYE0PA/QMnSvAj0gDio2 XDNTHDnv X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-24_07,2025-09-24_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 phishscore=0 spamscore=0 bulkscore=0 priorityscore=1501 clxscore=1015 adultscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509200020 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 88974100002 X-Stat-Signature: gq1p1u9nhk4gfmx9qpxbw6p8ppxesy9c X-Rspam-User: X-HE-Tag: 1758776621-24753 X-HE-Meta: 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 U+UNr0d2 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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: On 9/25/25 12:49 AM, Christophe Leroy wrote: > > > Le 24/09/2025 à 20:40, Donet Tom a écrit : >> unregister_one_node() and unregister_node() are small functions. >> This patch merges them into a single function named unregister_node() >> to improve code readability. > > Same comment than patch 1. It is not only because they are small that > you merge them, it is primarily because unregister_node() only has one > caller. Will update it in the next version. > >> >> No functional changes are introduced. >> >> Signed-off-by: Donet Tom >> --- >>   drivers/base/node.c  | 37 +++++++++++++++++-------------------- >>   include/linux/node.h |  6 ++---- >>   mm/memory_hotplug.c  |  4 ++-- >>   3 files changed, 21 insertions(+), 26 deletions(-) >> >> diff --git a/drivers/base/node.c b/drivers/base/node.c >> index eab620e29c78..d460c1675c77 100644 >> --- a/drivers/base/node.c >> +++ b/drivers/base/node.c >> @@ -638,23 +638,6 @@ static void node_device_release(struct device *dev) >>       kfree(to_node(dev)); >>   } >>   -/** >> - * unregister_node - unregister a node device >> - * @node: node going away >> - * >> - * Unregisters a node device @node.  All the devices on the node >> must be >> - * unregistered before calling this function. >> - */ >> -void unregister_node(struct node *node) >> -{ >> -    hugetlb_unregister_node(node); >> -    compaction_unregister_node(node); >> -    reclaim_unregister_node(node); >> -    node_remove_accesses(node); >> -    node_remove_caches(node); >> -    device_unregister(&node->dev); >> -} >> - >>   struct node *node_devices[MAX_NUMNODES]; >>     /* >> @@ -887,12 +870,26 @@ int register_node(int nid) >>       return error; >>   } >>   -void unregister_one_node(int nid) >> +/** >> + * unregister_node - unregister a node device >> + * @nid: nid of the node going away >> + * >> + * Unregisters the node device at node id  @nid.  All the devices on >> the >> + * node must be unregistered before calling this function. >> + */ >> +void unregister_node(int nid) >>   { >> -    if (!node_devices[nid]) >> +    struct node *node = node_devices[nid]; >> + >> +    if (!node) >>           return; >>   -    unregister_node(node_devices[nid]); >> +    hugetlb_unregister_node(node); >> +    compaction_unregister_node(node); >> +    reclaim_unregister_node(node); >> +    node_remove_accesses(node); >> +    node_remove_caches(node); >> +    device_unregister(&node->dev); >>       node_devices[nid] = NULL; >>   } >>   diff --git a/include/linux/node.h b/include/linux/node.h >> index 4dcf876cd0b4..d721127964b3 100644 >> --- a/include/linux/node.h >> +++ b/include/linux/node.h >> @@ -124,8 +124,6 @@ static inline void >> register_memory_blocks_under_nodes(void) >>   } >>   #endif >>   -extern void unregister_node(struct node *node); >> - >>   struct node_notify { >>       int nid; >>   }; >> @@ -169,7 +167,7 @@ static inline int >> hotplug_node_notifier(notifier_fn_t fn, int pri) >>   extern void node_dev_init(void); >>   /* Core of the node registration - only memory hotplug should use >> this */ >>   extern int register_node(int nid); >> -extern void unregister_one_node(int nid); >> +extern void unregister_node(int nid); > > No 'extern' on function prototypes. Sure. Thank you very much > >>   extern int register_cpu_under_node(unsigned int cpu, unsigned int >> nid); >>   extern int unregister_cpu_under_node(unsigned int cpu, unsigned int >> nid); >>   extern void unregister_memory_block_under_nodes(struct memory_block >> *mem_blk); >> @@ -185,7 +183,7 @@ static inline int register_node(int nid) >>   { >>       return 0; >>   } >> -static inline int unregister_one_node(int nid) >> +static inline int unregister_node(int nid) >>   { >>       return 0; >>   } >> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c >> index 6c050d867031..94a8f6e8811a 100644 >> --- a/mm/memory_hotplug.c >> +++ b/mm/memory_hotplug.c >> @@ -1596,7 +1596,7 @@ int add_memory_resource(int nid, struct >> resource *res, mhp_t mhp_flags) >>   error: >>       if (new_node) { >>           node_set_offline(nid); >> -        unregister_one_node(nid); >> +        unregister_node(nid); >>       } >>   error_memblock_remove: >>       if (IS_ENABLED(CONFIG_ARCH_KEEP_MEMBLOCK)) >> @@ -2201,7 +2201,7 @@ void try_offline_node(int nid) >>        * node now. >>        */ >>       node_set_offline(nid); >> -    unregister_one_node(nid); >> +    unregister_node(nid); >>   } >>   EXPORT_SYMBOL(try_offline_node); > >