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[
    {
        "id": 116596,
        "web_url": "https://patches.dpdk.org/comment/116596/",
        "msgid": "<20200724110718.GB2305@bricha3-MOBL.ger.corp.intel.com>",
        "date": "2020-07-24T11:07:18",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 20,
            "url": "https://patches.dpdk.org/api/people/20/",
            "name": "Bruce Richardson",
            "email": "bruce.richardson@intel.com"
        },
        "content": "On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> From: Thomas Monjalon <thomas@monjalon.net>\n> \n> Drivers dependencies are evaluated in the order defined per\n> their parent directory (also called class).\n> This strict ordering prevent from having 2 different drivers\n> of the same class with different dependencies ordering.\n> This problem occurs if drivers/common/mlx5 depends on drivers/bus/pci,\n> while drivers/bus/dpaa depends on drivers/common/dpaax.\n> Having a strict ordering between directories bus and common\n> is too much restrictive.\n> \n> That's why it is made possible to have a more fine-grain directory list,\n> adding a driver sub-directory in the list.\n> In this case, the isolated driver must be removed from its class list,\n> and added directly in drivers/meson.build.\n> Also, the per-class variables must be duplicated in the isolated driver,\n> because the call \"subdir(class)\" is skipped in the isolated driver case.\n> \n> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n\nThe commit log above has some strange word-wrapping, and occasionally\nstrange phrasing. I think it could be slightly reworded, perhaps as:\n\n  Drivers dependencies are evaluated in the order defined per their parent\n  directory (also called class). This strict ordering prevents from us\n  from having pairs of drivers from two classes with different dependency\n  ordering. For example, if the mlx5 common code depends on the pci bus\n  driver, while the dpaax common code is itself a dependency of the dpaa\n  bus driver.  Having a strict ordering between directories bus and common\n  is too restrictive, as processing either common drivers or bus drivers\n  first leads us to missing dependencies in this scenario.\n   \n  This patch makes it possible to have a more fine-grain directory list,\n  adding a specific driver sub-directory in the top-level drivers\n  subdirectory list. In this case, the isolated driver must also be removed\n  from its class list, and the per-class variables must be duplicated in\n  the isolated driver, because the call \"subdir(class)\" is skipped in the\n  isolated driver case.\n  \n\nApart from that, I think this is a good idea to give us some flexibility\nin managing driver ordering which should help other drivers too -\nperhaps QAT? Ideally, though, I'd like if we can limit the flexible\nordering to *only* common code, in which case we could move the\nper-class variables for common to the top-level to prevent duplication,\nand maybe even get rid of common/meson.build completely. That, however,\nwill depend on how much this feature gets used and by whom.\n\nTherefore:\nReview-by: Bruce Richardson <bruce.richardson@intel.com>\nAcked-by: Bruce Richardson <bruce.richardson@intel.com>",
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            "References": "<20200610171728.89-2-parav@mellanox.com>\n <20200723200910.376581-1-parav@mellanox.com>\n <20200723200910.376581-4-parav@mellanox.com>",
            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
            "Content-Type": "text/plain; charset=us-ascii",
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            "Message-ID": "<20200724110718.GB2305@bricha3-MOBL.ger.corp.intel.com>",
            "Date": "Fri, 24 Jul 2020 12:07:18 +0100",
            "Sender": "\"dev\" <dev-bounces@dpdk.org>",
            "To": "Parav Pandit <parav@mellanox.com>",
            "From": "Bruce Richardson <bruce.richardson@intel.com>",
            "In-Reply-To": "<20200723200910.376581-4-parav@mellanox.com>",
            "Cc": "dev@dpdk.org, grive@u256.net, ferruh.yigit@intel.com,\n thomas@monjalon.net, rasland@mellanox.com, orika@mellanox.com,\n matan@mellanox.com, joyce.kong@arm.com",
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    {
        "id": 116607,
        "web_url": "https://patches.dpdk.org/comment/116607/",
        "msgid": "<CAJFAV8xSBpEB_6pvmQiq5kyCkYqF==bwZH8B-V=odK3Y6x7pVw@mail.gmail.com>",
        "date": "2020-07-24T13:41:08",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 1173,
            "url": "https://patches.dpdk.org/api/people/1173/",
            "name": "David Marchand",
            "email": "david.marchand@redhat.com"
        },
        "content": "On Thu, Jul 23, 2020 at 10:10 PM Parav Pandit <parav@mellanox.com> wrote:\n>\n> From: Thomas Monjalon <thomas@monjalon.net>\n>\n> Drivers dependencies are evaluated in the order defined per\n> their parent directory (also called class).\n> This strict ordering prevent from having 2 different drivers\n> of the same class with different dependencies ordering.\n> This problem occurs if drivers/common/mlx5 depends on drivers/bus/pci,\n> while drivers/bus/dpaa depends on drivers/common/dpaax.\n> Having a strict ordering between directories bus and common\n> is too much restrictive.\n>\n> That's why it is made possible to have a more fine-grain directory list,\n> adding a driver sub-directory in the list.\n> In this case, the isolated driver must be removed from its class list,\n> and added directly in drivers/meson.build.\n> Also, the per-class variables must be duplicated in the isolated driver,\n> because the call \"subdir(class)\" is skipped in the isolated driver case.\n>\n> Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> ---\n>  drivers/meson.build | 28 +++++++++++++++++++++-------\n>  1 file changed, 21 insertions(+), 7 deletions(-)\n>\n> diff --git a/drivers/meson.build b/drivers/meson.build\n> index e2aeba931..e6d0409aa 100644\n> --- a/drivers/meson.build\n> +++ b/drivers/meson.build\n> @@ -1,8 +1,8 @@\n>  # SPDX-License-Identifier: BSD-3-Clause\n>  # Copyright(c) 2017-2019 Intel Corporation\n>\n> -# Defines the order in which the drivers are buit.\n> -dpdk_driver_classes = [\n> +# Defines the order of dependencies evaluation\n> +subdirs = [\n>         'common',\n>         'bus',\n>         'mempool', # depends on common and bus.\n> @@ -27,7 +27,7 @@ if cc.has_argument('-Wno-format-truncation')\n>         default_cflags += '-Wno-format-truncation'\n>  endif\n>\n> -foreach class:dpdk_driver_classes\n> +foreach subpath:subdirs\n>         drivers = []\n>         std_deps = []\n>         config_flag_fmt = '' # format string used to set the value in dpdk_conf\n> @@ -35,8 +35,22 @@ foreach class:dpdk_driver_classes\n>                              # the library, the dependency and to find the\n>                              # version file for linking\n>\n> -       subdir(class)\n> -       class_drivers = []\n> +       # subpath can be either \"class\" or \"class/driver\"\n> +       if subpath.contains('/')\n> +               driver_path = subpath.split('/')\n> +               class = driver_path[0]\n> +               drivers += driver_path[1]\n> +       else\n> +               class = subpath\n> +               subdir(class)\n> +       endif\n> +\n> +       # save class name on first occurence\n> +       if not dpdk_driver_classes.contains(class)\n> +               dpdk_driver_classes += class\n> +       endif\n> +       # get already enabled drivers of the same class\n> +       enabled_drivers = get_variable(class + '_drivers', [])\n>\n>         foreach drv:drivers\n>                 drv_path = join_paths(class, drv)\n> @@ -96,7 +110,7 @@ foreach class:dpdk_driver_classes\n>                                                 '_disable_reason', reason)\n>                         endif\n>                 else\n> -                       class_drivers += name\n> +                       enabled_drivers += name\n>\n>                         if fmt_name == ''\n>                                 fmt_name = name\n> @@ -203,5 +217,5 @@ foreach class:dpdk_driver_classes\n>                 endif # build\n>         endforeach\n>\n> -       set_variable(class + '_drivers', class_drivers)\n> +       set_variable(class + '_drivers', enabled_drivers)\n>  endforeach\n> --\n> 2.25.4\n>\n\nReviewed-by: David Marchand <david.marchand@redhat.com>",
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            "References": "<20200610171728.89-2-parav@mellanox.com>\n <20200723200910.376581-1-parav@mellanox.com>\n <20200723200910.376581-4-parav@mellanox.com>",
            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
            "Content-Type": "text/plain; charset=\"UTF-8\"",
            "From": "David Marchand <david.marchand@redhat.com>",
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            "Message-ID": "\n <CAJFAV8xSBpEB_6pvmQiq5kyCkYqF==bwZH8B-V=odK3Y6x7pVw@mail.gmail.com>",
            "Date": "Fri, 24 Jul 2020 15:41:08 +0200",
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            "To": "Parav Pandit <parav@mellanox.com>",
            "Delivered-To": "patchwork@inbox.dpdk.org",
            "In-Reply-To": "<20200723200910.376581-4-parav@mellanox.com>",
            "Cc": "dev <dev@dpdk.org>, Gaetan Rivet <grive@u256.net>,\n \"Yigit, Ferruh\" <ferruh.yigit@intel.com>,\n Thomas Monjalon <thomas@monjalon.net>,\n Raslan <rasland@mellanox.com>, Ori Kam <orika@mellanox.com>,\n Matan Azrad <matan@mellanox.com>, Joyce Kong <joyce.kong@arm.com>",
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    },
    {
        "id": 116610,
        "web_url": "https://patches.dpdk.org/comment/116610/",
        "msgid": "<AM0PR05MB4866DD854EA53813E7A16557D1770@AM0PR05MB4866.eurprd05.prod.outlook.com>",
        "date": "2020-07-24T13:48:25",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 1780,
            "url": "https://patches.dpdk.org/api/people/1780/",
            "name": "Parav Pandit",
            "email": "parav@mellanox.com"
        },
        "content": "Hi Bruce,\n\n> From: Bruce Richardson <bruce.richardson@intel.com>\n> Sent: Friday, July 24, 2020 4:37 PM\n> \n> On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> > From: Thomas Monjalon <thomas@monjalon.net>\n> >\n> > Drivers dependencies are evaluated in the order defined per their\n> > parent directory (also called class).\n> > This strict ordering prevent from having 2 different drivers of the\n> > same class with different dependencies ordering.\n> > This problem occurs if drivers/common/mlx5 depends on drivers/bus/pci,\n> > while drivers/bus/dpaa depends on drivers/common/dpaax.\n> > Having a strict ordering between directories bus and common is too\n> > much restrictive.\n> >\n> > That's why it is made possible to have a more fine-grain directory\n> > list, adding a driver sub-directory in the list.\n> > In this case, the isolated driver must be removed from its class list,\n> > and added directly in drivers/meson.build.\n> > Also, the per-class variables must be duplicated in the isolated\n> > driver, because the call \"subdir(class)\" is skipped in the isolated driver case.\n> >\n> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> \n> The commit log above has some strange word-wrapping, and occasionally\n> strange phrasing. I think it could be slightly reworded, perhaps as:\n> \nI updated the commit log as you suggested below along with RB, ack tag.\nThank you.\n\n>   Drivers dependencies are evaluated in the order defined per their parent\n>   directory (also called class). This strict ordering prevents from us\n>   from having pairs of drivers from two classes with different dependency\n>   ordering. For example, if the mlx5 common code depends on the pci bus\n>   driver, while the dpaax common code is itself a dependency of the dpaa\n>   bus driver.  Having a strict ordering between directories bus and common\n>   is too restrictive, as processing either common drivers or bus drivers\n>   first leads us to missing dependencies in this scenario.\n> \n>   This patch makes it possible to have a more fine-grain directory list,\n>   adding a specific driver sub-directory in the top-level drivers\n>   subdirectory list. In this case, the isolated driver must also be removed\n>   from its class list, and the per-class variables must be duplicated in\n>   the isolated driver, because the call \"subdir(class)\" is skipped in the\n>   isolated driver case.\n> \n> \n> Apart from that, I think this is a good idea to give us some flexibility in\n> managing driver ordering which should help other drivers too - perhaps QAT?\n> Ideally, though, I'd like if we can limit the flexible ordering to *only* common\n> code, in which case we could move the per-class variables for common to the\n> top-level to prevent duplication, and maybe even get rid of\n> common/meson.build completely. That, however, will depend on how much\n> this feature gets used and by whom.\n> \n> Therefore:\n> Review-by: Bruce Richardson <bruce.richardson@intel.com>\n> Acked-by: Bruce Richardson <bruce.richardson@intel.com>",
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            "Thread-Topic": "[dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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    {
        "id": 116611,
        "web_url": "https://patches.dpdk.org/comment/116611/",
        "msgid": "<4937496.TfPSyrM900@thomas>",
        "date": "2020-07-24T13:54:33",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 685,
            "url": "https://patches.dpdk.org/api/people/685/",
            "name": "Thomas Monjalon",
            "email": "thomas@monjalon.net"
        },
        "content": "24/07/2020 15:48, Parav Pandit:\n> Hi Bruce,\n> \n> > From: Bruce Richardson <bruce.richardson@intel.com>\n> > Sent: Friday, July 24, 2020 4:37 PM\n> > \n> > On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> > > From: Thomas Monjalon <thomas@monjalon.net>\n> > >\n> > > Drivers dependencies are evaluated in the order defined per their\n> > > parent directory (also called class).\n> > > This strict ordering prevent from having 2 different drivers of the\n> > > same class with different dependencies ordering.\n> > > This problem occurs if drivers/common/mlx5 depends on drivers/bus/pci,\n> > > while drivers/bus/dpaa depends on drivers/common/dpaax.\n> > > Having a strict ordering between directories bus and common is too\n> > > much restrictive.\n> > >\n> > > That's why it is made possible to have a more fine-grain directory\n> > > list, adding a driver sub-directory in the list.\n> > > In this case, the isolated driver must be removed from its class list,\n> > > and added directly in drivers/meson.build.\n> > > Also, the per-class variables must be duplicated in the isolated\n> > > driver, because the call \"subdir(class)\" is skipped in the isolated driver case.\n> > >\n> > > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> > \n> > The commit log above has some strange word-wrapping, and occasionally\n> > strange phrasing. I think it could be slightly reworded, perhaps as:\n> > \n> I updated the commit log as you suggested below along with RB, ack tag.\n> Thank you.\n> \n> >   Drivers dependencies are evaluated in the order defined per their parent\n> >   directory (also called class). This strict ordering prevents from us\n\nIs \"from us\" too much?\n\n> >   from having pairs of drivers from two classes with different dependency\n> >   ordering. For example, if the mlx5 common code depends on the pci bus\n> >   driver, while the dpaax common code is itself a dependency of the dpaa\n> >   bus driver.  Having a strict ordering between directories bus and common\n> >   is too restrictive, as processing either common drivers or bus drivers\n> >   first leads us to missing dependencies in this scenario.\n> > \n> >   This patch makes it possible to have a more fine-grain directory list,\n> >   adding a specific driver sub-directory in the top-level drivers\n> >   subdirectory list. In this case, the isolated driver must also be removed\n> >   from its class list, and the per-class variables must be duplicated in\n> >   the isolated driver, because the call \"subdir(class)\" is skipped in the\n> >   isolated driver case.\n> > \n> > \n> > Apart from that, I think this is a good idea to give us some flexibility in\n> > managing driver ordering which should help other drivers too - perhaps QAT?\n> > Ideally, though, I'd like if we can limit the flexible ordering to *only* common\n> > code, in which case we could move the per-class variables for common to the\n> > top-level to prevent duplication, and maybe even get rid of\n> > common/meson.build completely. That, however, will depend on how much\n> > this feature gets used and by whom.\n\nFor now it is used only to have common/mlx5 isolated of the rest\nof common drivers, as an exception.\nI think it is good to keep common/meson.build\nuntil there are more exceptions than the rest.",
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            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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            ],
            "Message-ID": "<4937496.TfPSyrM900@thomas>",
            "Date": "Fri, 24 Jul 2020 15:54:33 +0200",
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            "To": "Bruce Richardson <bruce.richardson@intel.com>,\n Parav Pandit <parav@mellanox.com>",
            "From": "Thomas Monjalon <thomas@monjalon.net>",
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    },
    {
        "id": 116617,
        "web_url": "https://patches.dpdk.org/comment/116617/",
        "msgid": "<20200724145007.GC2305@bricha3-MOBL.ger.corp.intel.com>",
        "date": "2020-07-24T14:50:07",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 20,
            "url": "https://patches.dpdk.org/api/people/20/",
            "name": "Bruce Richardson",
            "email": "bruce.richardson@intel.com"
        },
        "content": "On Fri, Jul 24, 2020 at 03:54:33PM +0200, Thomas Monjalon wrote:\n> 24/07/2020 15:48, Parav Pandit:\n> > Hi Bruce,\n> > \n> > > From: Bruce Richardson <bruce.richardson@intel.com>\n> > > Sent: Friday, July 24, 2020 4:37 PM\n> > > \n> > > On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> > > > From: Thomas Monjalon <thomas@monjalon.net>\n> > > >\n> > > > Drivers dependencies are evaluated in the order defined per their\n> > > > parent directory (also called class).\n> > > > This strict ordering prevent from having 2 different drivers of the\n> > > > same class with different dependencies ordering.\n> > > > This problem occurs if drivers/common/mlx5 depends on drivers/bus/pci,\n> > > > while drivers/bus/dpaa depends on drivers/common/dpaax.\n> > > > Having a strict ordering between directories bus and common is too\n> > > > much restrictive.\n> > > >\n> > > > That's why it is made possible to have a more fine-grain directory\n> > > > list, adding a driver sub-directory in the list.\n> > > > In this case, the isolated driver must be removed from its class list,\n> > > > and added directly in drivers/meson.build.\n> > > > Also, the per-class variables must be duplicated in the isolated\n> > > > driver, because the call \"subdir(class)\" is skipped in the isolated driver case.\n> > > >\n> > > > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> > > \n> > > The commit log above has some strange word-wrapping, and occasionally\n> > > strange phrasing. I think it could be slightly reworded, perhaps as:\n> > > \n> > I updated the commit log as you suggested below along with RB, ack tag.\n> > Thank you.\n> > \n> > >   Drivers dependencies are evaluated in the order defined per their parent\n> > >   directory (also called class). This strict ordering prevents from us\n> \n> Is \"from us\" too much?\n\nThe word \"from\" is incorrect, anyway, it should just be \"prevents us\".\nEvidently I didn't proofread my own text well enough. :-(\n\n> \n> > >   from having pairs of drivers from two classes with different dependency\n> > >   ordering. For example, if the mlx5 common code depends on the pci bus\n> > >   driver, while the dpaax common code is itself a dependency of the dpaa\n> > >   bus driver.  Having a strict ordering between directories bus and common\n> > >   is too restrictive, as processing either common drivers or bus drivers\n> > >   first leads us to missing dependencies in this scenario.\n> > > \n> > >   This patch makes it possible to have a more fine-grain directory list,\n> > >   adding a specific driver sub-directory in the top-level drivers\n> > >   subdirectory list. In this case, the isolated driver must also be removed\n> > >   from its class list, and the per-class variables must be duplicated in\n> > >   the isolated driver, because the call \"subdir(class)\" is skipped in the\n> > >   isolated driver case.\n> > > \n> > > \n> > > Apart from that, I think this is a good idea to give us some flexibility in\n> > > managing driver ordering which should help other drivers too - perhaps QAT?\n> > > Ideally, though, I'd like if we can limit the flexible ordering to *only* common\n> > > code, in which case we could move the per-class variables for common to the\n> > > top-level to prevent duplication, and maybe even get rid of\n> > > common/meson.build completely. That, however, will depend on how much\n> > > this feature gets used and by whom.\n> \n> For now it is used only to have common/mlx5 isolated of the rest\n> of common drivers, as an exception.\n> I think it is good to keep common/meson.build\n> until there are more exceptions than the rest.\n> \n\n+1 agreed. \nJust suggesting possible future changes depending on how things\ngo, and also seeding the idea that any out-of-order build processing should\nreally be limited to the common folder.\n\n/Bruce",
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            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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            "To": "Thomas Monjalon <thomas@monjalon.net>",
            "From": "Bruce Richardson <bruce.richardson@intel.com>",
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            "Cc": "Parav Pandit <parav@mellanox.com>, \"dev@dpdk.org\" <dev@dpdk.org>,\n \"grive@u256.net\" <grive@u256.net>,\n \"ferruh.yigit@intel.com\" <ferruh.yigit@intel.com>,\n Raslan Darawsheh <rasland@mellanox.com>,\n Ori Kam <orika@mellanox.com>, Matan Azrad <matan@mellanox.com>,\n \"joyce.kong@arm.com\" <joyce.kong@arm.com>",
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    {
        "id": 116619,
        "web_url": "https://patches.dpdk.org/comment/116619/",
        "msgid": "<AM0PR05MB4866596C70120AF807755B08D1770@AM0PR05MB4866.eurprd05.prod.outlook.com>",
        "date": "2020-07-24T15:17:38",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 1780,
            "url": "https://patches.dpdk.org/api/people/1780/",
            "name": "Parav Pandit",
            "email": "parav@mellanox.com"
        },
        "content": "> From: Bruce Richardson <bruce.richardson@intel.com>\n> Sent: Friday, July 24, 2020 8:20 PM\n> \n> On Fri, Jul 24, 2020 at 03:54:33PM +0200, Thomas Monjalon wrote:\n> > 24/07/2020 15:48, Parav Pandit:\n> > > Hi Bruce,\n> > >\n> > > > From: Bruce Richardson <bruce.richardson@intel.com>\n> > > > Sent: Friday, July 24, 2020 4:37 PM\n> > > >\n> > > > On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> > > > > From: Thomas Monjalon <thomas@monjalon.net>\n> > > > >\n> > > > > Drivers dependencies are evaluated in the order defined per\n> > > > > their parent directory (also called class).\n> > > > > This strict ordering prevent from having 2 different drivers of\n> > > > > the same class with different dependencies ordering.\n> > > > > This problem occurs if drivers/common/mlx5 depends on\n> > > > > drivers/bus/pci, while drivers/bus/dpaa depends on\n> drivers/common/dpaax.\n> > > > > Having a strict ordering between directories bus and common is\n> > > > > too much restrictive.\n> > > > >\n> > > > > That's why it is made possible to have a more fine-grain\n> > > > > directory list, adding a driver sub-directory in the list.\n> > > > > In this case, the isolated driver must be removed from its class\n> > > > > list, and added directly in drivers/meson.build.\n> > > > > Also, the per-class variables must be duplicated in the isolated\n> > > > > driver, because the call \"subdir(class)\" is skipped in the isolated driver\n> case.\n> > > > >\n> > > > > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> > > >\n> > > > The commit log above has some strange word-wrapping, and\n> > > > occasionally strange phrasing. I think it could be slightly reworded,\n> perhaps as:\n> > > >\n> > > I updated the commit log as you suggested below along with RB, ack tag.\n> > > Thank you.\n> > >\n> > > >   Drivers dependencies are evaluated in the order defined per their\n> parent\n> > > >   directory (also called class). This strict ordering prevents\n> > > > from us\n> >\n> > Is \"from us\" too much?\n> \n> The word \"from\" is incorrect, anyway, it should just be \"prevents us\".\n> Evidently I didn't proofread my own text well enough. :-(\n\nIn v10 I rephase it as \"strict ordering prevents from having pairs of drivers...\".",
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            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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            "To": "Bruce Richardson <bruce.richardson@intel.com>, Thomas Monjalon\n <thomas@monjalon.net>",
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            "Thread-Topic": "[dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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    {
        "id": 116620,
        "web_url": "https://patches.dpdk.org/comment/116620/",
        "msgid": "<20200724152949.GD2305@bricha3-MOBL.ger.corp.intel.com>",
        "date": "2020-07-24T15:29:49",
        "subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
        "submitter": {
            "id": 20,
            "url": "https://patches.dpdk.org/api/people/20/",
            "name": "Bruce Richardson",
            "email": "bruce.richardson@intel.com"
        },
        "content": "On Fri, Jul 24, 2020 at 03:17:38PM +0000, Parav Pandit wrote:\n> \n> \n> > From: Bruce Richardson <bruce.richardson@intel.com>\n> > Sent: Friday, July 24, 2020 8:20 PM\n> > \n> > On Fri, Jul 24, 2020 at 03:54:33PM +0200, Thomas Monjalon wrote:\n> > > 24/07/2020 15:48, Parav Pandit:\n> > > > Hi Bruce,\n> > > >\n> > > > > From: Bruce Richardson <bruce.richardson@intel.com>\n> > > > > Sent: Friday, July 24, 2020 4:37 PM\n> > > > >\n> > > > > On Thu, Jul 23, 2020 at 11:09:03PM +0300, Parav Pandit wrote:\n> > > > > > From: Thomas Monjalon <thomas@monjalon.net>\n> > > > > >\n> > > > > > Drivers dependencies are evaluated in the order defined per\n> > > > > > their parent directory (also called class).\n> > > > > > This strict ordering prevent from having 2 different drivers of\n> > > > > > the same class with different dependencies ordering.\n> > > > > > This problem occurs if drivers/common/mlx5 depends on\n> > > > > > drivers/bus/pci, while drivers/bus/dpaa depends on\n> > drivers/common/dpaax.\n> > > > > > Having a strict ordering between directories bus and common is\n> > > > > > too much restrictive.\n> > > > > >\n> > > > > > That's why it is made possible to have a more fine-grain\n> > > > > > directory list, adding a driver sub-directory in the list.\n> > > > > > In this case, the isolated driver must be removed from its class\n> > > > > > list, and added directly in drivers/meson.build.\n> > > > > > Also, the per-class variables must be duplicated in the isolated\n> > > > > > driver, because the call \"subdir(class)\" is skipped in the isolated driver\n> > case.\n> > > > > >\n> > > > > > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>\n> > > > >\n> > > > > The commit log above has some strange word-wrapping, and\n> > > > > occasionally strange phrasing. I think it could be slightly reworded,\n> > perhaps as:\n> > > > >\n> > > > I updated the commit log as you suggested below along with RB, ack tag.\n> > > > Thank you.\n> > > >\n> > > > >   Drivers dependencies are evaluated in the order defined per their\n> > parent\n> > > > >   directory (also called class). This strict ordering prevents\n> > > > > from us\n> > >\n> > > Is \"from us\" too much?\n> > \n> > The word \"from\" is incorrect, anyway, it should just be \"prevents us\".\n> > Evidently I didn't proofread my own text well enough. :-(\n> \n> In v10 I rephase it as \"strict ordering prevents from having pairs of drivers...\".\n\nGreat, thanks.",
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            "References": "<20200610171728.89-2-parav@mellanox.com>\n <20200724110718.GB2305@bricha3-MOBL.ger.corp.intel.com>\n <AM0PR05MB4866DD854EA53813E7A16557D1770@AM0PR05MB4866.eurprd05.prod.outlook.com>\n <4937496.TfPSyrM900@thomas>\n <20200724145007.GC2305@bricha3-MOBL.ger.corp.intel.com>\n <AM0PR05MB4866596C70120AF807755B08D1770@AM0PR05MB4866.eurprd05.prod.outlook.com>",
            "Subject": "Re: [dpdk-dev] [PATCH v8 03/10] drivers: relax dependency order",
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            "Date": "Fri, 24 Jul 2020 16:29:49 +0100",
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            "To": "Parav Pandit <parav@mellanox.com>",
            "From": "Bruce Richardson <bruce.richardson@intel.com>",
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