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[
    {
        "id": 115543,
        "web_url": "https://patches.dpdk.org/comment/115543/",
        "msgid": "<BYAPR11MB3143C1108734B55D30E26B37D7670@BYAPR11MB3143.namprd11.prod.outlook.com>",
        "date": "2020-07-08T14:52:11",
        "subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
        "submitter": {
            "id": 317,
            "url": "https://patches.dpdk.org/api/people/317/",
            "name": "Van Haaren, Harry",
            "email": "harry.van.haaren@intel.com"
        },
        "content": "> -----Original Message-----\n> From: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>\n> Sent: Wednesday, July 8, 2020 2:38 PM\n> To: Van Haaren, Harry <harry.van.haaren@intel.com>; Jerin Jacob\n> <jerin.jacob@caviumnetworks.com>\n> Cc: dev@dpdk.org; l.wojciechow@partner.samsung.com; stable@dpdk.org\n> Subject: [PATCH v2] eal: fix lcore state bug\n> \n> The rte_service_lcore_reset_all function stops execution of services\n> on all lcores and switches them back from ROLE_SERVICE to ROLE_RTE.\n> However the thread loop for slave lcores (eal_thread_loop) distincts these\n> roles to set lcore state after processing delegated function.\n> It sets WAIT state for ROLE_SERVICE, but FINISHED for ROLE_RTE.\n> So changing the role to RTE before stopping work in slave lcores\n> causes lcores to end in FINISHED state. That is why the rte_eal_lcore_wait\n> must be run after rte_service_lcore_reset_all to bring back lcores to\n> launchable (WAIT) state.\n> This has been fixed in test app and clarified in API documentation.\n> \n> Setting the state to WAIT in rte_service_runner_func is premature\n> as the rte_service_runner_func function is still a part of the lcore\n> function delegated to slave lcore. The state is overwritten anyway in\n> slave lcore thread loop. This premature setting state to WAIT might\n> however cause rte_eal_lcore_wait, that was called by the application,\n> to return before slave lcore thread set the FINISHED state. That's\n> why it is removed from librte_eal rte_service_runner_func function.\n> \n> Bugzilla ID: 464\n> Fixes: 21698354c832 (\"service: introduce service cores concept\")\n> Fixes: f038a81e1c56 (\"service: add unit tests\")\n> Cc: harry.van.haaren@intel.com\n> Cc: stable@dpdk.org\n> \n> Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>\n\nThanks for v2, applies cleanly. Tested patch with unit tests, bug description,\nservice_cores sample app, and testpmd running (idle) service cores in bg, all fine;\n\nAcked-by: Harry van Haaren <harry.van.haaren@intel.com>",
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            "Subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
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            "To": "Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>, Jerin Jacob\n <jerin.jacob@caviumnetworks.com>, David Marchand <david.marchand@redhat.com>",
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            "Thread-Topic": "[PATCH v2] eal: fix lcore state bug",
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    {
        "id": 115557,
        "web_url": "https://patches.dpdk.org/comment/115557/",
        "msgid": "<CAJFAV8xWa6WZy_GAZ2yrY6qrCWbyjGaMWYjLhXUjpDd2QnM+bQ@mail.gmail.com>",
        "date": "2020-07-08T17:10:14",
        "subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
        "submitter": {
            "id": 1173,
            "url": "https://patches.dpdk.org/api/people/1173/",
            "name": "David Marchand",
            "email": "david.marchand@redhat.com"
        },
        "content": "On Wed, Jul 8, 2020 at 4:52 PM Van Haaren, Harry\n<harry.van.haaren@intel.com> wrote:\n> > The rte_service_lcore_reset_all function stops execution of services\n> > on all lcores and switches them back from ROLE_SERVICE to ROLE_RTE.\n> > However the thread loop for slave lcores (eal_thread_loop) distincts these\n> > roles to set lcore state after processing delegated function.\n> > It sets WAIT state for ROLE_SERVICE, but FINISHED for ROLE_RTE.\n> > So changing the role to RTE before stopping work in slave lcores\n> > causes lcores to end in FINISHED state. That is why the rte_eal_lcore_wait\n> > must be run after rte_service_lcore_reset_all to bring back lcores to\n> > launchable (WAIT) state.\n> > This has been fixed in test app and clarified in API documentation.\n> >\n> > Setting the state to WAIT in rte_service_runner_func is premature\n> > as the rte_service_runner_func function is still a part of the lcore\n> > function delegated to slave lcore. The state is overwritten anyway in\n> > slave lcore thread loop. This premature setting state to WAIT might\n> > however cause rte_eal_lcore_wait, that was called by the application,\n> > to return before slave lcore thread set the FINISHED state. That's\n> > why it is removed from librte_eal rte_service_runner_func function.\n\nThanks for the explanation and fix.\n\n> >\n> > Bugzilla ID: 464\n> > Fixes: 21698354c832 (\"service: introduce service cores concept\")\n> > Fixes: f038a81e1c56 (\"service: add unit tests\")\n> > Cc: stable@dpdk.org\n> >\n\nReported-by: Sarosh Arif <sarosh.arif@emumba.com>\n> > Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>\n> Acked-by: Harry van Haaren <harry.van.haaren@intel.com>\n\nApplied, thanks Lukasz.",
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            "Subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
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            "Date": "Wed, 8 Jul 2020 19:10:14 +0200",
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            "Cc": "Jerin Jacob Kollanukkaran <jerinj@marvell.com>,\n \"dev@dpdk.org\" <dev@dpdk.org>,\n \"stable@dpdk.org\" <stable@dpdk.org>, \"Van Haaren,\n Harry\" <harry.van.haaren@intel.com>",
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            "To": "Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>"
        }
    },
    {
        "id": 115561,
        "web_url": "https://patches.dpdk.org/comment/115561/",
        "msgid": "<0ea9101c-3248-22cb-85a1-1b1f08e44069@partner.samsung.com>",
        "date": "2020-07-08T19:37:20",
        "subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
        "submitter": {
            "id": 1628,
            "url": "https://patches.dpdk.org/api/people/1628/",
            "name": "Lukasz Wojciechowski",
            "email": "l.wojciechow@partner.samsung.com"
        },
        "content": "W dniu 08.07.2020 o 19:10, David Marchand pisze:\n> On Wed, Jul 8, 2020 at 4:52 PM Van Haaren, Harry\n> <harry.van.haaren@intel.com> wrote:\n>>> The rte_service_lcore_reset_all function stops execution of services\n>>> on all lcores and switches them back from ROLE_SERVICE to ROLE_RTE.\n>>> However the thread loop for slave lcores (eal_thread_loop) distincts these\n>>> roles to set lcore state after processing delegated function.\n>>> It sets WAIT state for ROLE_SERVICE, but FINISHED for ROLE_RTE.\n>>> So changing the role to RTE before stopping work in slave lcores\n>>> causes lcores to end in FINISHED state. That is why the rte_eal_lcore_wait\n>>> must be run after rte_service_lcore_reset_all to bring back lcores to\n>>> launchable (WAIT) state.\n>>> This has been fixed in test app and clarified in API documentation.\n>>>\n>>> Setting the state to WAIT in rte_service_runner_func is premature\n>>> as the rte_service_runner_func function is still a part of the lcore\n>>> function delegated to slave lcore. The state is overwritten anyway in\n>>> slave lcore thread loop. This premature setting state to WAIT might\n>>> however cause rte_eal_lcore_wait, that was called by the application,\n>>> to return before slave lcore thread set the FINISHED state. That's\n>>> why it is removed from librte_eal rte_service_runner_func function.\n> Thanks for the explanation and fix.\n>\n>>> Bugzilla ID: 464\n>>> Fixes: 21698354c832 (\"service: introduce service cores concept\")\n>>> Fixes: f038a81e1c56 (\"service: add unit tests\")\n>>> Cc: stable@dpdk.org\n>>>\n> Reported-by: Sarosh Arif <sarosh.arif@emumba.com>\n>>> Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>\n>> Acked-by: Harry van Haaren <harry.van.haaren@intel.com>\n> Applied, thanks Lukasz.\n>\nGreat, thank you",
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            "From": "Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>",
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            ],
            "Subject": "Re: [dpdk-dev] [PATCH v2] eal: fix lcore state bug",
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]