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=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 095B7C04AAC for ; Thu, 23 May 2019 05:34:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B995620881 for ; Thu, 23 May 2019 05:34:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="JbTK75rV"; dkim=pass (1024-bit key) header.d=fb.onmicrosoft.com header.i=@fb.onmicrosoft.com header.b="H1ixN45m" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728258AbfEWFeN (ORCPT ); Thu, 23 May 2019 01:34:13 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:46920 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725786AbfEWFeM (ORCPT ); Thu, 23 May 2019 01:34:12 -0400 Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4N5WXf7025937; Wed, 22 May 2019 22:33:49 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : references : in-reply-to : content-type : content-id : content-transfer-encoding : mime-version; s=facebook; bh=YTNDL9JYQFyG9rL19fZF2L1zUVgike9zAG3uJZAduKY=; b=JbTK75rVaoFAfV/dyEOHl6EKOPPIq9MBS+iBYkr67knfCm6ECjVueKQ6StkABiD0oFYU jNISXNLpKENlrd7TAX8WXLmIz7douMa6QsyGx6l2NC2oANqFi4c2GzfK+nha+d7AVCvg Pjf4ZJTu0UGWvUwZo3NlDTuvRZrMmeCV20Y= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2sn9bgtj9w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Wed, 22 May 2019 22:33:49 -0700 Received: from ash-exhub101.TheFacebook.com (2620:10d:c0a8:82::e) by ash-exhub101.TheFacebook.com (2620:10d:c0a8:82::e) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Wed, 22 May 2019 22:33:47 -0700 Received: from NAM03-DM3-obe.outbound.protection.outlook.com (100.104.31.183) by o365-in.thefacebook.com (100.104.35.173) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.1713.5 via Frontend Transport; Wed, 22 May 2019 22:33:47 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.onmicrosoft.com; s=selector1-fb-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YTNDL9JYQFyG9rL19fZF2L1zUVgike9zAG3uJZAduKY=; b=H1ixN45mB8QST0QWm2Y0WLuEHEoxheunJjsC/PhPWrkhpp5vQj4Q5TVD0hnx9SMQ9tTl5/Hw+LsqDCH8R/UvJX6nuEejPBcFJAZzHBVEsiBh2F11v/52JM6p1U4BzDUvYmnAgPBF9FGswHfmk7h1QxUKVubTTeHrK72isGyS8C8= Received: from BYAPR15MB3384.namprd15.prod.outlook.com (20.179.59.17) by BYAPR15MB3240.namprd15.prod.outlook.com (20.179.57.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1922.17; Thu, 23 May 2019 05:33:45 +0000 Received: from BYAPR15MB3384.namprd15.prod.outlook.com ([fe80::956e:28a4:f18d:b698]) by BYAPR15MB3384.namprd15.prod.outlook.com ([fe80::956e:28a4:f18d:b698%3]) with mapi id 15.20.1900.020; Thu, 23 May 2019 05:33:45 +0000 From: Yonghong Song To: Roman Gushchin , Alexei Starovoitov , "bpf@vger.kernel.org" CC: Daniel Borkmann , "netdev@vger.kernel.org" , Tejun Heo , Kernel Team , "cgroups@vger.kernel.org" , Stanislav Fomichev , "linux-kernel@vger.kernel.org" , "jolsa@redhat.com" Subject: Re: [PATCH v2 bpf-next 1/4] bpf: decouple the lifetime of cgroup_bpf from cgroup itself Thread-Topic: [PATCH v2 bpf-next 1/4] bpf: decouple the lifetime of cgroup_bpf from cgroup itself Thread-Index: AQHVEPV8fnh1KoyybESqE07m+r7jv6Z4MDwA Date: Thu, 23 May 2019 05:33:45 +0000 Message-ID: <530bba0f-9e13-5308-fc93-d0dab0c56fcc@fb.com> References: <20190522232051.2938491-1-guro@fb.com> <20190522232051.2938491-2-guro@fb.com> In-Reply-To: <20190522232051.2938491-2-guro@fb.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR08CA0059.namprd08.prod.outlook.com (2603:10b6:300:c0::33) To BYAPR15MB3384.namprd15.prod.outlook.com (2603:10b6:a03:10e::17) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2620:10d:c090:180::c87a] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 72bbd13a-26da-44f2-f0da-08d6df403924 x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(2017052603328)(7193020);SRVR:BYAPR15MB3240; x-ms-traffictypediagnostic: BYAPR15MB3240: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 00462943DE x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(376002)(39860400002)(136003)(396003)(366004)(346002)(199004)(189003)(2616005)(5024004)(256004)(66946007)(66476007)(66556008)(64756008)(66446008)(73956011)(2501003)(486006)(476003)(68736007)(4326008)(46003)(71190400001)(14444005)(25786009)(186003)(316002)(71200400001)(5660300002)(81166006)(31696002)(6512007)(11346002)(446003)(6436002)(99286004)(86362001)(8676002)(81156014)(6116002)(6486002)(8936002)(6246003)(36756003)(229853002)(54906003)(110136005)(14454004)(478600001)(76176011)(52116002)(102836004)(53546011)(6506007)(386003)(305945005)(53936002)(7736002)(2906002)(31686004);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR15MB3240;H:BYAPR15MB3384.namprd15.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: IlQejTvoaVsAVpHJH8H88OgSHon/kD4NwZcV50bX8kVl3jRn2/ysazJoUXWTQLq2yIqHShzYWUoeRLyDApw4lHAlAx3cO9r40w3dBSlU/pAAOwj6QL06yffTvbvKcYqRRujYLAKheKmG273zG2tzf8oJSHZUKFE7mLsrMy51A2Yi16EEsk8xB0Al6KVoaYXgpttj25QgMdK0cEKVCEA/EQrOa36Rio2Ph5rJ//9eCTTn42YVGOKMRalxtpe+Qp12Ezm0K7geu+SmJT0TvO+eavX9SKrAjIa8vfv+nv5wLaaUXGkOE/6htpfiyWkFnDbUe7GwJJ7DzXwFt7h/r/+ivlHVlWpeRHGrh29eJ0WeUoeUkcMxdfyenBc79diDfjStFcZH4CwbF6KTddDIvW3TTJanWkUBSAmjV7iERwnI3R4= Content-Type: text/plain; charset="utf-8" Content-ID: <30619F7B64C7734CABEE2D10DE1CA489@namprd15.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 72bbd13a-26da-44f2-f0da-08d6df403924 X-MS-Exchange-CrossTenant-originalarrivaltime: 23 May 2019 05:33:45.2035 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB3240 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-23_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=640 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905230039 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DQoNCk9uIDUvMjIvMTkgNDoyMCBQTSwgUm9tYW4gR3VzaGNoaW4gd3JvdGU6DQo+IEN1cnJlbnRs eSB0aGUgbGlmZXRpbWUgb2YgYnBmIHByb2dyYW1zIGF0dGFjaGVkIHRvIGEgY2dyb3VwIGlzIGJv dW5kDQo+IHRvIHRoZSBsaWZldGltZSBvZiB0aGUgY2dyb3VwIGl0c2VsZi4gSXQgbWVhbnMgdGhh dCBpZiBhIHVzZXINCj4gZm9yZ2V0cyAob3IgaW50ZW50aW9uYWxseSBhdm9pZHMpIHRvIGRldGFj aCBhIGJwZiBwcm9ncmFtIGJlZm9yZQ0KPiByZW1vdmluZyB0aGUgY2dyb3VwLCBpdCB3aWxsIHN0 YXkgYXR0YWNoZWQgdXAgdG8gdGhlIHJlbGVhc2Ugb2YgdGhlDQo+IGNncm91cC4gU2luY2UgdGhl IGNncm91cCBjYW4gc3RheSBpbiB0aGUgZHlpbmcgc3RhdGUgKHRoZSBzdGF0ZQ0KPiBiZXR3ZWVu IGJlaW5nIHJtZGlyKCknZWQgYW5kIGJlaW5nIHJlbGVhc2VkKSBmb3IgYSB2ZXJ5IGxvbmcgdGlt ZSwgaXQNCj4gbGVhZHMgdG8gYSB3YXN0ZSBvZiBtZW1vcnkuIEFsc28sIGl0IGJsb2NrcyBhIHBv c3NpYmlsaXR5IHRvIGltcGxlbWVudA0KPiB0aGUgbWVtY2ctYmFzZWQgbWVtb3J5IGFjY291bnRp bmcgZm9yIGJwZiBvYmplY3RzLCBiZWNhdXNlIGEgY2lyY3VsYXINCj4gcmVmZXJlbmNlIGRlcGVu ZGVuY3kgd2lsbCBvY2N1ci4gQ2hhcmdlZCBtZW1vcnkgcGFnZXMgYXJlIHBpbm5pbmcgdGhlDQo+ IGNvcnJlc3BvbmRpbmcgbWVtb3J5IGNncm91cCwgYW5kIGlmIHRoZSBtZW1vcnkgY2dyb3VwIGlz IHBpbm5pbmcNCj4gdGhlIGF0dGFjaGVkIGJwZiBwcm9ncmFtLCBub3RoaW5nIHdpbGwgYmUgZXZl ciByZWxlYXNlZC4NCj4gDQo+IEEgZHlpbmcgY2dyb3VwIGNhbiBub3QgY29udGFpbiBhbnkgcHJv Y2Vzc2VzLCBzbyB0aGUgb25seSBjaGFuY2UgZm9yDQo+IGFuIGF0dGFjaGVkIGJwZiBwcm9ncmFt IHRvIGJlIGV4ZWN1dGVkIGlzIGEgbGl2ZSBzb2NrZXQgYXNzb2NpYXRlZA0KPiB3aXRoIHRoZSBj Z3JvdXAuIFNvIGluIG9yZGVyIHRvIHJlbGVhc2UgYWxsIGJwZiBkYXRhIGVhcmx5LCBsZXQncw0K PiBjb3VudCBhc3NvY2lhdGVkIHNvY2tldHMgdXNpbmcgYSBuZXcgcGVyY3B1IHJlZmNvdW50ZXIu IE9uIGNncm91cA0KPiByZW1vdmFsIHRoZSBjb3VudGVyIGlzIHRyYW5zaXRpb25lZCB0byB0aGUg YXRvbWljIG1vZGUsIGFuZCBhcyBzb29uDQo+IGFzIGl0IHJlYWNoZXMgMCwgYWxsIGJwZiBwcm9n cmFtcyBhcmUgZGV0YWNoZWQuDQo+IA0KPiBUaGUgcmVmZXJlbmNlIGNvdW50ZXIgaXMgbm90IHNv Y2tldCBzcGVjaWZpYywgYW5kIGNhbiBiZSB1c2VkIGZvciBhbnkNCj4gb3RoZXIgdHlwZXMgb2Yg cHJvZ3JhbXMsIHdoaWNoIGNhbiBiZSBleGVjdXRlZCBmcm9tIGEgY2dyb3VwLWJwZiBob29rDQo+ IG91dHNpZGUgb2YgdGhlIHByb2Nlc3MgY29udGV4dCwgaGFkIHN1Y2ggYSBuZWVkIGFyaXNlIGlu IHRoZSBmdXR1cmUuDQo+IA0KPiBTaWduZWQtb2ZmLWJ5OiBSb21hbiBHdXNoY2hpbiA8Z3Vyb0Bm Yi5jb20+DQo+IENjOiBqb2xzYUByZWRoYXQuY29tDQoNClRoZSBsb2dpYyBsb29rcyBzb3VuZCB0 byBtZS4gV2l0aCBvbmUgbml0IGJlbG93LA0KQWNrZWQtYnk6IFlvbmdob25nIFNvbmcgPHloc0Bm Yi5jb20+DQoNCj4gLS0tDQo+ICAgaW5jbHVkZS9saW51eC9icGYtY2dyb3VwLmggfCAgOCArKysr KystLQ0KPiAgIGluY2x1ZGUvbGludXgvY2dyb3VwLmggICAgIHwgMTggKysrKysrKysrKysrKysr KysrDQo+ICAga2VybmVsL2JwZi9jZ3JvdXAuYyAgICAgICAgfCAyNSArKysrKysrKysrKysrKysr KysrKysrLS0tDQo+ICAga2VybmVsL2Nncm91cC9jZ3JvdXAuYyAgICAgfCAxMSArKysrKysrKy0t LQ0KPiAgIDQgZmlsZXMgY2hhbmdlZCwgNTQgaW5zZXJ0aW9ucygrKSwgOCBkZWxldGlvbnMoLSkN Cj4gDQpbLi4uXQ0KPiBAQCAtMTY3LDcgKzE3OCwxMiBAQCBpbnQgY2dyb3VwX2JwZl9pbmhlcml0 KHN0cnVjdCBjZ3JvdXAgKmNncnApDQo+ICAgICovDQo+ICAgI2RlZmluZQlOUiBBUlJBWV9TSVpF KGNncnAtPmJwZi5lZmZlY3RpdmUpDQo+ICAgCXN0cnVjdCBicGZfcHJvZ19hcnJheSBfX3JjdSAq YXJyYXlzW05SXSA9IHt9Ow0KPiAtCWludCBpOw0KPiArCWludCByZXQsIGk7DQo+ICsNCj4gKwly ZXQgPSBwZXJjcHVfcmVmX2luaXQoJmNncnAtPmJwZi5yZWZjbnQsIGNncm91cF9icGZfcmVsZWFz ZSwgMCwNCj4gKwkJCSAgICAgIEdGUF9LRVJORUwpOw0KPiArCWlmIChyZXQpDQo+ICsJCXJldHVy biAtRU5PTUVNOw0KTWF5YmUgcmV0dXJuICJyZXQiIGhlcmUgaW5zdGVhZCBvZiAtRU5PTUVNLiBD dXJyZW50bHksIHBlcmNwdV9yZWZfaW5pdA0Kb25seSByZXR1cm4gZXJyb3IgY29kZSBpcyAtRU5P TUVNLiBCdXQgaW4gdGhlIGZ1dHVyZSwgaXQgY291bGQNCmNoYW5nZT8NCg0KPiAgIA0KPiAgIAlm b3IgKGkgPSAwOyBpIDwgTlI7IGkrKykNCj4gICAJCUlOSVRfTElTVF9IRUFEKCZjZ3JwLT5icGYu cHJvZ3NbaV0pOw0KPiBAQCAtMTgzLDYgKzE5OSw5IEBAIGludCBjZ3JvdXBfYnBmX2luaGVyaXQo c3RydWN0IGNncm91cCAqY2dycCkNCj4gICBjbGVhbnVwOg0KPiAgIAlmb3IgKGkgPSAwOyBpIDwg TlI7IGkrKykNCj4gICAJCWJwZl9wcm9nX2FycmF5X2ZyZWUoYXJyYXlzW2ldKTsNCj4gKw0KPiAr CXBlcmNwdV9yZWZfZXhpdCgmY2dycC0+YnBmLnJlZmNudCk7DQo+ICsNCj4gICAJcmV0dXJuIC1F Tk9NRU07DQo+ICAgfQ0KPiAgIA0KWy4uLl0NCg==