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DIR:OUT; SFP:1101; SCL:1; SRVR:VE1PR08MB4864; H:VE1PR08MB4640.eurprd08.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: /DNgk6Cn0RW++/vWe6s0JlVKdpIcErxSLkcLThww4R/xVyIRJU2aFcDdkykUjrU7OjecwaYW2EK3ETgroN9e/coJORNpOy4hZrWAPuzrk5YsVz6E242sHp49yv+6nfGONB5eiyMKsJhQBFUu/J3x9IlaRtNVrMhogM4atHiXBA3o2rGztwYCEDIHOy4ty01ekg8cth9iDF02yMfmsuMIXeJ9bUqugRR8tftNozOs52nSp76Y0rNs1aWegiQJ6szltql1XEfRNF+uPbm2P6Aj5XChblA1ra3cXWKFFc2eIK1YqjXhLVHQIWQOnvo0bFzdBG/SllhFPN0g9cliQTeswJW1kf3NBnFBASFtM/VWCib1HTKrucWtHfT/9bUI4cXKI9M6DfNL+r/9sFdSRU/UIjNKgWcpr3clbig6akFQGNg= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: e256a4ea-18db-47ed-7cfc-08d701343c03 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Jul 2019 10:33:35.1284 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: Phil.Yang@arm.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR08MB4864 Subject: Re: [dpdk-dev] [PATCH v1 0/3] MCS queued lock implementation X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" > -----Original Message----- > From: Thomas Monjalon > Sent: Friday, July 5, 2019 4:12 AM > To: Phil Yang (Arm Technology China) ; Honnappa > Nagarahalli > Cc: dev@dpdk.org; jerinj@marvell.com; hemant.agrawal@nxp.com; Gavin > Hu (Arm Technology China) ; nd > Subject: Re: [dpdk-dev] [PATCH v1 0/3] MCS queued lock implementation >=20 > 05/06/2019 17:58, Phil Yang: > > This patch set added MCS lock library and its unit test. > > > > The MCS lock (proposed by JOHN M. MELLOR-CRUMMEY and MICHAEL L. > SCOTT) provides > > scalability by spinning on a CPU/thread local variable which avoids > expensive > > cache bouncings. It provides fairness by maintaining a list of acquirer= s and > > passing the lock to each CPU/thread in the order they acquired the lock= . >=20 > What is the plan for this patch? I have reworked this patch and addressed all the comments in the previous v= ersion. Please review the v3.=20 > Do we try to get more reviews for a merge in 19.08-rc2? > Or we target 19.11? >=20 Thank, Phil