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DIR:OUT; SFP:1101; X-MS-Office365-Filtering-Correlation-Id-Prvs: fdee026e-b1d7-4a49-34ba-08d829a9903a X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Rv/fS5C1gxz6dU7UMAgwL7QXkqz8hh8V6c6tzKvZkPAb1ENMDs6lAw4XQ+FK5mOrLt+uGjZTdFxRmlkz89zwm374IheJX371E0TpvZFnOl4b+StcKkh878hBbzk9D/6qh4sygZSup6H36FTcxuYapxFbOAeQyixOqlFBVYRM44Jk5ToZq/9LtJ1TD24etOmudyqtvcOctat6SNOCVPw/HiBN2x3LIRhM7G5mUA/YkW6alU0C0leeUHDmS6Svm2mChnvhSD2SYG1W1qa6tynvZHYuiILwaZvhzXJnOl327XCcuDLkbhzkEG1Bj0PB0aoIFRGO+ot/e/SAl7iKY/35QPaKe6keVWDGb7fPfJIn+fQx5ydlBKg44IRDd/vRweU8w8Ij75DQbg90PWL0SYGI2w== X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jul 2020 16:59:18.3726 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ad0349b2-945c-4ad4-c1fb-08d829a99428 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: VE1EUR03FT043.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR08MB4220 Subject: Re: [dpdk-dev] [PATCH v8 2/3] devtools: prevent use of rte atomic APIs in future patches 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" > > > > > Subject: Re: [dpdk-dev] [PATCH v8 2/3] devtools: prevent use of rte > > > atomic APIs in future patches > > > > > > 16/07/2020 12:48, David Marchand: > > > > On Thu, Jul 16, 2020 at 6:58 AM Phil Yang wrote= : > > > > > check_forbidden_additions() { # > > > > > res=3D0 > > > > > + c11_atomics_dir=3D"lib/librte_distributor lib/librte_hash > lib/librte_kni > > > > > + lib/librte_lpm lib/librte_rcu lib/librte= _ring > > > > > + lib/librte_stack lib/librte_vhost > > > > > + drivers/event/octeontx drivers/event/oct= eontx2 > > > > > + drivers/event/opdl drivers/net/bnx2x dri= vers/net/hinic > > > > > + drivers/net/hns3 drivers/net/memif > drivers/net/thunderx > > > > > + drivers/net/virtio examples/l2fwd-event" > > > > > > > > I prefer a form like: > > > > > > > > + c11_atomics_dir=3D"" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/event/octeontx" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/event/octeontx2" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/event/opdl" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/bnx2x" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/hinic" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/hns3" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/memif" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/thunderx" > > > > + c11_atomics_dir=3D"$c11_atomics_dir drivers/net/virtio" > > > > + c11_atomics_dir=3D"$c11_atomics_dir examples/l2fwd-event" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_distributor" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_hash" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_kni" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_lpm" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_rcu" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_ring" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_stack" > > > > + c11_atomics_dir=3D"$c11_atomics_dir lib/librte_vhost" > > > > > > > > Easier to read and update. > > > > > > Why do we need this list at all? > > > Are we allowed to add new code with old atomics in other > > > directories? > > > How bad it is to have a warning on non-converted libs? > > > > From my perspective, the pros of this list are : > > 1. Avoid introducing false warnings in non-converted modules. Otherwise= , > the maintainers have to wonder if that module is converted or not. >=20 > Don't we want to convert all libs? The goal is to convert all the libs. > If we are adding one more rte_atomic in a lib, we should ask the question > why not converting to C11, no? Agree, I am fine with this approach. That will kind of distribute the conve= rsion work as well.=20 >=20 > > 2. Keep non-converted modules compatible. C11 atomic builtins cannot be > used directly for rte_atomicXX_t variables. > > > > The cons are : > > 1. The list needs updating every time we convert a module. This list will go away once all the modules are converted. > > 2. The script is not elegant as before. >=20 >=20