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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 DB3C2C388F9 for ; Wed, 11 Nov 2020 09:42:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8CC9320756 for ; Wed, 11 Nov 2020 09:42:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726455AbgKKJmw (ORCPT ); Wed, 11 Nov 2020 04:42:52 -0500 Received: from szxga01-in.huawei.com ([45.249.212.187]:2060 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725830AbgKKJms (ORCPT ); Wed, 11 Nov 2020 04:42:48 -0500 Received: from dggeme758-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4CWKX06cr2zVmv9; Wed, 11 Nov 2020 17:42:24 +0800 (CST) Received: from dggemi761-chm.china.huawei.com (10.1.198.147) by dggeme758-chm.china.huawei.com (10.3.19.104) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1913.5; Wed, 11 Nov 2020 17:42:42 +0800 Received: from dggemi761-chm.china.huawei.com ([10.9.49.202]) by dggemi761-chm.china.huawei.com ([10.9.49.202]) with mapi id 15.01.1913.007; Wed, 11 Nov 2020 17:42:42 +0800 From: "Song Bao Hua (Barry Song)" To: John Garry , "iommu@lists.linux-foundation.org" , "hch@lst.de" , "robin.murphy@arm.com" , "m.szyprowski@samsung.com" CC: "linux-kselftest@vger.kernel.org" , "Will Deacon" , Joerg Roedel , Linuxarm , "xuwei (O)" , Shuah Khan Subject: RE: [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs Thread-Topic: [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs Thread-Index: AQHWsO+tiT3rvc8AvUKektYgWKvLn6nBDT6Q//+EgQCAAZyYMIAABiqAgACFcyA= Date: Wed, 11 Nov 2020 09:42:42 +0000 Message-ID: References: <20201102080646.2180-1-song.bao.hua@hisilicon.com> <20201102080646.2180-2-song.bao.hua@hisilicon.com> <0658ee16-d539-61c5-1d39-77d50f559803@huawei.com> <88e91063b7f041bda7d147438f1c4621@hisilicon.com> <51f0c148-e2e3-e084-4021-ec5883919436@huawei.com> In-Reply-To: <51f0c148-e2e3-e084-4021-ec5883919436@huawei.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.126.200.81] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org DQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogSm9obiBHYXJyeQ0KPiBT ZW50OiBXZWRuZXNkYXksIE5vdmVtYmVyIDExLCAyMDIwIDEwOjM3IFBNDQo+IFRvOiBTb25nIEJh byBIdWEgKEJhcnJ5IFNvbmcpIDxzb25nLmJhby5odWFAaGlzaWxpY29uLmNvbT47DQo+IGlvbW11 QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnOyBoY2hAbHN0LmRlOyByb2Jpbi5tdXJwaHlAYXJt LmNvbTsNCj4gbS5zenlwcm93c2tpQHNhbXN1bmcuY29tDQo+IENjOiBsaW51eC1rc2VsZnRlc3RA dmdlci5rZXJuZWwub3JnOyBXaWxsIERlYWNvbiA8d2lsbEBrZXJuZWwub3JnPjsgSm9lcmcNCj4g Um9lZGVsIDxqb3JvQDhieXRlcy5vcmc+OyBMaW51eGFybSA8bGludXhhcm1AaHVhd2VpLmNvbT47 IHh1d2VpIChPKQ0KPiA8eHV3ZWk1QGh1YXdlaS5jb20+OyBTaHVhaCBLaGFuIDxzaHVhaEBrZXJu ZWwub3JnPg0KPiBTdWJqZWN0OiBSZTogW1BBVENIIHYzIDEvMl0gZG1hLW1hcHBpbmc6IGFkZCBi ZW5jaG1hcmsgc3VwcG9ydCBmb3INCj4gc3RyZWFtaW5nIERNQSBBUElzDQo+IA0KPiBPbiAxMS8x MS8yMDIwIDAxOjI5LCBTb25nIEJhbyBIdWEgKEJhcnJ5IFNvbmcpIHdyb3RlOg0KPiA+IEknZCBs aWtlIHRvIHRoaW5rIGNoZWNraW5nIHRoaXMgaGVyZSB3b3VsZCBiZSBvdmVyZGVzaWduLiBXZSBq dXN0IGdpdmUgdXNlcnMgdGhlDQo+ID4gZnJlZWRvbSB0byBiaW5kIGFueSBkZXZpY2UgdGhleSBj YXJlIGFib3V0IHRvIHRoZSBiZW5jaG1hcmsgZHJpdmVyLiBVc3VhbGx5DQo+ID4gdGhhdCBtZWFu cyBhIHJlYWwgaGFyZHdhcmUgZWl0aGVyIGJlaGluZCBhbiBJT01NVSBvciB0aHJvdWdoIGEgZGly ZWN0DQo+ID4gbWFwcGluZy4NCj4gPg0KPiA+IGlmIGZvciBhbnkgcmVhc29uIHVzZXJzIHB1dCBh IHdyb25nICJkZXZpY2UiLCB0aGF0IGlzIHRoZSBjaG9pY2Ugb2YgdXNlcnMuDQo+IA0KPiBSaWdo dCwgYnV0IGlmIHRoZSBkZXZpY2Ugc2ltcGx5IGhhcyBubyBETUEgb3BzIHN1cHBvcnRlZCwgaXQg Y291bGQgYmUNCj4gYmV0dGVyIHRvIGZhaWwgdGhlIHByb2JlIHJhdGhlciB0aGFuIGxldCB0aGVt IHRyeSB0aGUgdGVzdCBhdCBhbGwuDQo+IA0KPiAgIEFueWhvdywNCj4gPiB0aGUgYmVsb3cgY29k ZSB3aWxsIHN0aWxsIGhhbmRsZSBpdCBwcm9wZXJseSBhbmQgdXNlcnMgd2lsbCBnZXQgYSByZXBv cnQgaW4gd2hpY2gNCj4gPiBldmVyeXRoaW5nIGlzIHplcm8uDQo+ID4NCj4gPiArc3RhdGljIGlu dCBtYXBfYmVuY2htYXJrX3RocmVhZCh2b2lkICpkYXRhKQ0KPiA+ICt7DQo+ID4gLi4uDQo+ID4g KwkJZG1hX2FkZHIgPSBkbWFfbWFwX3NpbmdsZShtYXAtPmRldiwgYnVmLCBQQUdFX1NJWkUsDQo+ IERNQV9CSURJUkVDVElPTkFMKTsNCj4gPiArCQlpZiAodW5saWtlbHkoZG1hX21hcHBpbmdfZXJy b3IobWFwLT5kZXYsIGRtYV9hZGRyKSkpIHsNCj4gDQo+IERvaW5nIHRoaXMgaXMgcHJvcGVyLCBi dXQgSSBhbSBub3Qgc3VyZSBpZiB0aGlzIHRlbGxzIHRoZSB1c2VyIHRoZSByZWFsDQo+IHByb2Js ZW0uDQoNClRlbGxpbmcgdXNlcnMgdGhlIHJlYWwgcHJvYmxlbSBpc24ndCB0aGUgZGVzaWduIGlu dGVudGlvbiBvZiB0aGlzIHRlc3QNCmJlbmNobWFyay4gSXQgaXMgbmV2ZXIgdGhlIHB1cnBvc2Ug b2YgdGhpcyBiZW5jaG1hcmsuDQoNCj4gDQo+ID4gKwkJCXByX2VycigiZG1hX21hcF9zaW5nbGUg ZmFpbGVkIG9uICVzXG4iLA0KPiBkZXZfbmFtZShtYXAtPmRldikpOw0KPiANCj4gTm90IHN1cmUg d2h5IHVzZSBwcl9lcnIoKSBvdmVyIGRldl9lcnIoKS4NCg0KV2UgYXJlIHJlcG9ydGluZyBlcnJv cnMgaW4gZG1hLWJlbmNobWFyayBkcml2ZXIgcmF0aGVyIHRoYW4gcmVwb3J0aW5nIGVycm9ycw0K aW4gdGhlIGRyaXZlciBvZiB0aGUgc3BlY2lmaWMgZGV2aWNlLiBJIHRoaW5rIHdlIHNob3VsZCBo YXZlICJkbWEtYmVuY2htYXJrIg0KYXMgdGhlIHByZWZpeCB3aGlsZSBwcmludGluZyB0aGUgbmFt ZSBvZiB0aGUgZGV2aWNlIGJ5IGRldl9uYW1lKCkuDQoNCj4gDQo+ID4gKwkJCXJldCA9IC1FTk9N RU07DQo+ID4gKwkJCWdvdG8gb3V0Ow0KPiA+ICsJCX0NCj4gDQo+IFRoYW5rcywNCj4gSm9obg0K DQpUaGFua3MNCkJhcnJ5DQoNCg==