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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CO6PR11MB5602.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 04c89f6e-d58b-4904-a7da-08da90ae74da X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Sep 2022 08:53:38.5230 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: OndlFL45nK1/9zIBq9wS/8WKXw0fVdlwKNf66W3kzkxa7Sp+blZT5SOJSzehquBPkwPwsl96hESyduLYLI4dwg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR11MB7267 X-OriginatorOrg: intel.com X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Hi Stephen, > > > > +static void mark_forked(void) > > +{ > > + is_forked++; > > +} > > + >=20 > This will end up counting application threads as well. >=20 I think it would be counted in the child process when 'fork()' is called, and in the parent process, it would be zero. > Also, it would need to be atomic. >=20 Thanks for your advice. > > /* Launch threads, called at application init(). */ int > > rte_eal_init(int argc, char **argv) @@ -1324,6 +1331,8 @@ > > rte_eal_init(int argc, char **argv) > > > > eal_mcfg_complete(); > > > > + pthread_atfork(NULL, NULL, mark_forked); > > + > > return fctret; > > } >=20 > > int > > rte_eal_cleanup(void) > > { > > + if (is_forked) > > + return 0; > > + >=20 > rte_eal_cleanup is supposed to be called only once by application. Yes. But in some case(e.g. debug_autotest of dpdk-test), it would fork a child process to test 'rte_exit()', then it would call 'rte_eal_cleanup()= '. So 'is_forked' is introduced to avoid this situation. Regards Zhichao